italian biomethane roadmap
Transcrição
italian biomethane roadmap
ITALIAN BIOMETHANE ROADMAP October 2014 1 AUTHOR: LORENZO MAGGIONI CONTACTS: CIB-Consorzio Italiano Biogas e Gassificazione c/o Parco Tecnologico Padano Via Einstein Cascina Codazza, 26900 (LO) EMAIL: [email protected] Tel.: +39(0)3714662631 Fax.: +39(0)3714662401 2 CONTENTS TABLE OF CONTENTS .......................................................................................................................... 3 1. INTRODUCTION ......................................................................................................................... 4 2. THE POTENTIAL OF THE ITALIAN “BIOGASDONERIGHT” (BIOGAS FATTO BENE)........................... 4 2.1 ITALIAN BIOGAS AND CIB ..................................................................................................... 4 2.2 BIOGAS: A HARD-WORKING ITALIAN INDUSTRY .................................................................... 5 2.3 LODE OF THE ITLALIAN BIOGAS: THE PRODUCTION POTENTIAL ............................................ 7 2.4 “BIOGASDONERIGHT” (BIOGAS FATTO BENE): THE NEED TO COMBINE COMPETITIVINESS AND SUSTAINIBILITY IN AGRICULTURAL BUSINESSES ....................................................................10 2.5 3. NATURAL GAS MARKET AND INFRASTRUCTURE ....................................................................... 12 3.1 4. BIOMETHANE AND THE DEVELOPMENT OF METHANE TRACTION IN ITALY ..........................11 A CHANCE FOR NATURAL GAS-BIOMETHANE.......................................................................15 BIOGAS INCENTIVIZING FRAMEWORK ...................................................................................... 15 4.1 REDUCTION OF INCENTIVES ................................................................................................16 4.2 INCENTIVIZING FEES ............................................................................................................17 5. BIOMETHANE INCENTIVIZING FRAMEWORK ............................................................................ 18 6. BIOGAS DEVELOPMENT PLANT BY 2020 ................................................................................... 23 6.1 DEVELOPMENT PLAN ..........................................................................................................23 6.2 GOALS AND SPECIFIC TOOLS................................................................................................27 6.2.1 COMPLETION OF BIOMETHANE REGULATIONS ....................................................................28 6.2.2 DEVELOPING NEW PRODUCTION .........................................................................................30 6.2.3 VOLUNTARY RENOUNCEMENT OF THE ALL-INCLUSIVE TARIFF AND PROPORTIONAL CREATION OF A NEW ANNUAL ALLOTMENT TO DEVELOP NEW COMBINED ELECTRICITY/BIOMETHANE PRODUCTION CAPABILITY ............................................................................................................31 6.2.4 PROMOTION OF PLANT MANAGEMENT FLEXIBILIZATION.....................................................32 6.2.5 DEVELOPMENT OF ENERGEY EFFICIENCY .............................................................................32 7. 3 URGENT ACTION PLAN TO DEVELOP ITALIAN BIOGAS/BIOMETHANE ........................................ 33 1. INTRODUCTION This document, which is part of the GGG project, describes the Italian biogas and biomethane industry. It depicts the number of biogas plants in Italy, direct and indirect advantages of the existing plants, the applicable legislation and the national incentivizing plan related to biogas and biomethane. Further, a brief analysis of the current national situation outlines the natural gas employment. In conclusion, it foresees the scenario that is likely to take place by 2020 in the field of biogas and biomethane with a closer look at goals and tools to use to achieve them, as well as obstacles to overcome. 2. THE POTENTIAL OF THE ITALIAN “BIOGASDONERIGHT” (BIOGAS FATTO BENE) 2.1 ITALIAN BIOGAS AND CIB The last three-year period has represented a crucial turning point for the development of biogas and biomethane topping more than 1000 plants and installed power of about one electrical TW. According to the estimate released by TERNA concerning 2013, the overall sector of the agricultural biogas counts some 1200 plants and a total installed electricity of about 900MWel - 85% is distributed in the Northern regions and the remaining 15% is distributed in Central and South Italy. These figures rank Italy as the second European producer after Germany, and as the third worldwide after China. The investments in the last four years have totalled 3,5-4 billion Euro counting on an increasing 12.000 employees working in this industry. Such an evolution has been unquestionably possible because of the all-inclusive fee provided by the law number 244, year 2007. Nonetheless field operators rose to the occasion developing both professionalism and plants. In particular within the CIB their efforts have aimed at fully integrating with the companies and become a fundamental part of the agronomic process of the farm business. Further, the last three years have also increased significantly the institutional role of CIB, which is now benchmark in the biogas field. Its representativeness is proven by the figures here below: [Key: A – Plants B – Electric power installed, Operating Plants, Data not available, Estimate Data not available. Table RIGHT: Total number members] 4 To date, CIB represents 475 farm businesses with biogas plants, i.e. almost 50% of the plants installed in Italy and adds up an overall power of 355MWel. As a whole CIB represents 583 leading farm businesses in the agricultural biogas production chain: from the agricultural company to the related industrial and productive industry. For what regards biomethane in Italy up to early July 2013 there were two biomethane plants, which were not connected to the natural gas grid. The first, located in San Giovanni in Persiceto (near Bologna, in the Region Emilia Romagna), is just a demonstration plant. It is connected to a biogas plant (1 MW electrical power, in operation), but as it is not used for a continuous production of biomethane, it is activated only when there are visitors. The second is connected to the landfill for the urban waste of Rome. Malagrotta is currently the largest landfill operating in Europe: more than 1.5 million tons of urban waste/year. For the collection of municipal waste the municipality of Rome began to fuel some vehicles with biomethane in January 1995. The production of biogas from the landfill is nowadays enough to generate electricity and biomethane to supply about 34 public and private vehicles. In 1998, the production of raw biogas was about 900-1000 Nm3/h, the production of biomethane about 400 Nm3/h. 2.2 BIOGAS: A HARD-WORKING ITALIAN INDUSTRY The contribution of the biogas industry to the Italian labour market exceeds all the one of other renewable sources (cf. following chart) (GSE data, CIB elaboration) Permanent personnel in the field of sustainable energy Installed power Estimate Producibility producibility (GWh) hours Permanent personnel Permanent Permanent personnel vs. personnel installed Vs. power in Producibility MWel in GWh Photovoltaic 16.420 1.250 20.525 12.300 0,7 0,6 Wind 8.119 1.400 11.367 2.200 0,3 0,2 Hydroelectric 18.232 4.000 72.928 10.500 0,6 0,1 Biogas(1) 894 8.000 7.148 10.000 11,2 1,4 Solid Biomass 591 8.000 4.728 3.608 6,1 0,8 Bioliquids 1.027 8.000 8.214 6.400 6,2 0,8 (1) Deriving from agricultural activity 5 Similarly, the comparison between the 2012 temporary personnel employed for the realization of new plants and the 2012 installed power prove biogas to be the technology that generates more jobs than other renewable sources (cf. following chart). Temporary personnel for the realization of new plants Temporary personnel 2012 Installed power t.p./i. p. in MWel 2012 Photovoltaic 60.000 3.647 16 Wind 23.000 1.183 19 Hydroelectric 5.200 140 37 Biogas 36.000 506 71 Solid Biomass 8.800 130 68 Bioliquids 4.800 264 18 (Biogas: from farming and forestry activities) The above mentioned trend regards also other applications: in Marghera efforts aim at deriving from vegetable oil and fat about 2% of the Italian fuel demand. The bio-refinery is now fuelled by palm-oil and engages 100 employees of the old refinery. To produce the same quantity of fuel, 350-400 small bio-refineries (fuelled by biomethane) and some 4500 employees would be needed over the territory: 45 times more and a fully Italian employment as the bio-refinery of the biomethane proceeds as an industry (from biomass/by-product to biomethane) that is completely national. Here below we make few examples that show how biogas can offer innumerable permanent job opportunities due to the following factors: 6 “Tiene aperte le stalle”/”Keeps the business going” strengthening the competitive and financial standing of the existing farms and contributes to maintaining their employment notwithstanding the difficult crisis all the market such as pig farming, cattle for meat, non PDO milk, citrus fruits, etc. is experiencing: namely it consolidates the capability to manage the unpredictability of the markets and increases competitiveness creating more stable jobs compared to other sustainable sources. It creates a wide-spread satellite network with many Italian companies characterized by a strong bent to export in different areas: ◦ Agricultural engineering ◦ Seeds companies ◦ Agricultural entrepreneurs ◦ Biogas plant industry ◦ Water treatment industry ◦ Methane gas component industry ◦ Automotive industry 2.3 LODE OF THE ITLALIAN BIOGAS: THE PRODUCTI ON POTENTIAL The Consorzio Italiano Biogas has estimated that the production potential of 8 billion Nm3 of equivalent biomethane to be achieved by 2030 using 400.000 ha land by virtue of a large use of so called integrative biomass, i.e. biomass that does not produce income (rather a cost) for farmers. This means: a) Second harvest crops, in precession or succession to feed or food crops b) Manure c) Agricultural by-products d) Agro-industrial by-products e) Biomass deriving from bio-refineries f) Multipurpose crops, or if otherwise not possible, no food crops on land that is not easily1 usable for feed purposes. To reach this production goal it is necessary to consolidate a land efficiency2 of 100 ha used agricultural land/MWel, i.e. 45 ha first harvest for each million of Nm3 biomethane/year. 1 So called “marginal” land: CIB think that there is no marginal land, rather land that produces lower income than its cost due to its peculiar fertility or water resources. 2 7 First harvest UAL ha / MWel installed Potential of “Biogasdoneright” (biogas fatto bene) 2010 2013 2015 2020 2030 Biogas From Agricultural Resources First harvest Used Agricultural Land (ha) 85.000 200.000 280.000 350.000 400000 140 308 115 253 80 176 60 132 45 100 Bio-CH4 0,6 1,7 3,5 5,8 8,0 equivalent Mwel Biogas from urban wet waste, landfill and waste 276 791 1591 2652 4000 Billion Nm3 equivalent Bio-CH4 0,2 0,3 0,4 0,7 1,0 equivalent Mwel Total “Biogasdoneright” (biogas fatto bene) potential Billion Nm3 Bio-CH4 equivalent 100 125 200 300 450 0,8 2,0 3,9 6,5 9,0 equivalent MWel 376 916 1.791 2.952 4450 Land efficiency ha/mln Nm3 Bio-CH4 eq ha/Mwel Biogas from Agricultural Resources Billion Nm3 equivalent The results obtained by the Italian biogas in the last years unquestionably confirm that these goals are realistic and likely to be achieved both for utilization of manure and by-products, as proved by the study made by Lombardy Region and Milan Politecnico (http://www.agricoltura.regione.lombardia.it/shared/ccurl/708/163/1713_ecobiogas_eboo k_def.pdf )(following chart), both for the reduction of the hectare number of first harvest UAL used for MWel "Mega-digester" average feeding 5% Lombardy Region 20% 282 MW 49% Manure Mais / summer cereals 26% By-products Triticale / w inter cereals 8 [Key to above table: Megadigester average feeding: manure, summer cereals/corn, Winter cereals/Triticale, By-products] Because of the great adaptability to the agro-ecological conditions of agricultural businesses and the possibility that the biogas technology has to integrate into any size of agricultural business, biogas is able to realize a land efficiency which is greater than other bio-energies and draws closer to the intensity of the land use of the photovoltaic energy in terms of comparable energy (methane vs. hydrogen). Land efficiency x 45 ha + P2G x 45 MWhto ha /ha Biodiesel from Soya ** 19,4 11 18 Biodiesel from Colza ** 14,2 8 25 Biodiesel palm-oil 8,1 4 43 Ethanol from Arundo donax * 5,8 3 60 “Biogasdoneright” (biogas fatto bene) 115 ha/1 Mil Nm3 Bio-CH4 4,1 2 84 “Biogasdoneright” (biogas fatto bene) 80 ha/1 Mil Nm3 Bio-CH4 2,9 2 121 “Biogasdoneright” (biogas fatto bene) 45 ha/1 Mil Nm3 Bio-CH4 1,8 1 194 “Biogasdoneright” (biogas fatto bene) 45 ha/Mln CH4+ P2G/1 Mil Nm3 Bio- CH4 *** 1,0 349 FV (1400 hour/year) 0,6 560 FV (1400 hour/year transformed to hydrogen ) 0,8 448 * co-products included (lignin) ** co-product (protein) *** biomethane plant with methanation CO2 biogas with grid hydrogen In other words, with 1 hectare of biomethane land you can drive 11 times more km compared to 1 hectare allotted to soya for the production of biodiesel. The produced biomethane boosts CO2 in “power to gas” systems and is able to achieve land efficiency comparable to the best state-of-the-art photovoltaic. 9 2.4 “BIOGASDONERIGHT” (BIOGAS FATTO BENE): THE NEED TO COMBINE COMPETITIVINESS AND SUSTAINIBILITY IN AGRICULTURAL BUSINESSES The reasons why a biogas plant is so land efficient are due to the intrinsic peculiarities of its technology, which makes it definitely different than any other bioenergy: Multi-feedstock: biogas plants are able to use equally any kind of organic-based matrix available on the territory and adapt to any kind of agro-ecology; as such biogas has a grounded potential to reduce production costs; Efficiency in the conversion of organic substance: with developed biological processes that operate both at room temperature and at 40-50°C, and that are able to convert 70-80% of organic carbon available in biogas, whereas the remaining residual in the digestate together with all the nutrients injected into the digester restore the organic fertility and the need of fertilizer of agricultural land; It doesn’t require significant economies of scale: in fact, it is possible to built an efficient biogas refinery from 500 to 1.000.000 litres of equivalent gasoline a year. For these reasons biogas can be produced everywhere from Sicily to the Lombardy plain, not modifying the existing farming organization (with e.g. mono-cultivations for the bio-refinery) and adapting instead to the size and organization of the agricultural business. In this way a biogas plant that is inserted correctly in an agricultural business not only doesn’t compete with the dietary activities and traditional foraging, but it contributes to re-launch the operative capability of agricultural businesses (it keeps the business going, improves the rotations, increases the land fertility and the intensity of the machinery use etc) combining sustainability and competitiveness. This is the basic concept that Consorzio Italiano Biogas has defined as #”Biogasdoneright” (biogas fatto bene), a technological platform that if adequately integrated with an agricultural business allows to: - Improves financial flows and credit of agricultural businesses - Decreases production costs of the technical means bound to the oil pricing trends a. Digestate instead of chemical oil-derived fertilizers, biomethane instead of fossil fuels in agrarian engineering b. Reduces compliance costs to environmental regulations related to greening and the use of manure - Makes sustainable practices advantageous c. Increases cultivation rotations, with second harvest or foraging crops as an alternative to mono-cultivations of corn or wheat d. 10 Enforces manure use e. Doubles harvest and use of conservative agricultural techniques f. Enforces digestate (cf. Implementing Regulation EU n. 354/2014 that, in the field of the fertilizers introduces biogas digestate as a product allowed in biological agriculture) Up to now, in Italy, biogas plants have been developed almost exclusively by means of the realization of continuously operating plants between 300-1.000 KWe, with a relatively low empowering of cogenerated thermic energy because of the rural location. The new competitive evolution of production costs of renewable electrical sources, considering the need to implement alternative sources to traditional fossil to employ for means of transport, compels biogas to find new markets by enforcing its peculiarity as opposed to wind and solar sources, namely that it is a carbon-based source and as such it is predictable and opens a variety of market opportunities: - traction; distributive generation, where, as predictable source, it is able to reduce local needs to adaptation because of its capability to penetrate into the electric energy distribution grid; - providing green chemistry with raw material and semi-finished products. 2.5 BIOMETHANE AND THE DEVELOPMENT OF METHANE TRACTION IN ITALY Methane is an alternative ecological fuel because of some unquestionable factors: - It grants a lower emissions of particulate, nitrogen oxide and other polluting agents; - It allows to reduce 20% CO2 emissions compared to other fossil fuels; - With biomethane it is capable of achieving efficiency in reducing emissions as much as solar and wind produced energy. Therefore, biomethane can be considered a land and carbon efficient advanced biofuel. A realistic development plan of methane/biomethane within 2020 should include: - Doubling service stations to 2000, thanks to the developing biogas incentives in Southern and Central regions; - Doubling current means of transport consumption of CNG methane (preferably GNL) up to about 2 billions Nm3 by 2020; - Increasing biomethane consumption up to 35% of the total consumption, about 700.000.000 Nm3/year. Besides a fast enforcement of the biomethane decree dated December 2013, it is necessary that the Government schedules annual targets to reach a biofuel utilisation of 10% of the total consumption of transport fuel by 2020. 11 [Key to above table: up left: Criticality: - regulations to implement decree – run in bureaucracy, - clear CIC marke, - project bankability – development of marketing strategies Observations: - development green field , - agricultural sector, - more projects than Germany due to co-existence up right: Development. Criticality: - increase mandatory use of biofuels, - development of NGV cars – methane taxation, Observations: - development of co-existence plants – development of biomethane from urban wet waste] 3. NATURAL GAS MARKET AND INFRA STRUCTURE Our country has a long tradition in the field of methane-fuelled vehicles and is still worldwide and European leader in the technology used for this kind of means of transport. At the end of 2013 the Italian distribution topped 1000 service stations, out of which 14 on highways and some 20 public means of transport companies. Further, more than 950 million cubic metres are consumed for traction between service stations and company vehicles. Compliant with the AEEG (Electric and Gas Energy Authority) regulations biomethane can be compatible with natural gas, which is already distributed in-country in the gas pipelines and secondary grids. Thus, it can be used by all the 790.000 vehicles, which are already fuelled with natural gas. It will be also possible to draw upon cylinder or tanker trucks. This kind of transport is habitual in Italy and useful to provide many different Consumers (civil, industrial, traction) with natural gas, which are not served by the pipelines grid, or are experiencing an emergency or grid maintenance works. Italy has a long history with methane-fuelled trucks and can claim leadership with about 800000 methane vehicles and the related technology developed at national level. In 2013 the service stations counted more than 1000 units out of which 14 on highways. The current consumption of methane is 950 million cubic metres and it is mainly conveyed through gas pipelines. To reach consumers that aren’t serviced with methane and biomethane by the gas grid, cylinder and tanker trucks represent valuable means of transport and supply. A brief summary will outline here below the characteristics and organization of the market and the infrastructures dedicated to the Italian natural gas. 12 The Italian gas industry is structured in three main phases: • Supply; • Transport (including activities related to storage and dispatching, transmission and distribution); • Marketing. Supply of natural gas Production means the extraction of gas from the underground. It is a free activity. The main operator is Eni SpA (90.04%). Import: the main importers are: Eni group (64.1%), Enel (14.6%), Edison (9.5%). The gas comes from abroad into the national grid through pathways such as Russia, Holland and Algeria to an LNG receiving terminal located in Panigaglia (La Spezia). Transport Storage: It is a regulated activity (granting MAP) and the main operator is Stogit SpA (Eni group), 96.6%. The Authority sets the rate. Dispatching: Refers to the equilibrium constant and real-time between supply and demand, and is strictly related to the transport carried out with remote control functions that act on the inlet-pressure of the gas from natural deposits or from storage, also acting on the gas flows in certain parts of the network. Transport: this phase includes the activity of conveying gas, via pipeline or ship transport of liquefied natural gas that is kept liquid at low temperature (LNG). Distribution: is the transport of gas through pipeline networks to local facilities for customers. It is a regulated activity (local authority). In 2004 there were about 550 distribution companies, nowadays there are 240 (the main ones Italgas SpA -Eni group-, and Enel). Marketing Sale: It is the business of selling to end users of gas purchased from wholesalers or imported. In Italy this is a free activity. In 2010, there were about 230 companies, including Eni Gas & Power (Eni group) and Enel Gas (Enel). The price is free, however, the “Autorità per l’Energia Elettrica ed il Gas – AEEG” (Electricity and Gas Authority) has defined the economic conditions. 13 Natural gas grid in Italy – October 2008 Gas grid infrastructure data The transport network is divided into two: a "primary" (or dorsal) on the transport of gas directly from production or import, and a "secondary" covering all pipelines (adductors secondary) that connect the primary network and reach centres of consumption. The main Italian pipeline has a length of approximately 34,000 km and spreads over the national territory (excluding Sardinia). The network of Snam represents 93,8% of the national primary network. Other operators have developed local networks, particularly in the Adriatic regions (Marche, Abruzzo and Molise). According to the resolution nr. 120/01 “Definizione di criteri per la determinazione delle tariffe per il trasporto e dispacciamento del gas naturale e per l’utilizzo dei terminali di Gnl e della prenotazione di capacità” (Resolution No. 120/01 "Development of criteria for the determination of tariffs for the transportation and regasification of natural gas and the use 14 of LNG terminals and the booking of capacity") the distribution network of pipelines was divided into two parts: - the National Gas Pipeline Network, for a total of 9.268 km, and the regional transportation network for the remaining 24.500 km. The national network consists of pipelines, compressor stations connected to the pipelines. The regional transportation network consists of the remaining part of the carrier pipelines not included in the National Gas Pipeline Network and the plants connected to it. The main function is to move and distribute natural gas in defined territorial areas, typically on a regional scale. The transport service should be understood as an integrated service from the above mentioned pathways of entry into the national network to the delivery locations of the regional network. The distribution is done by about 5.800 booths; almost 210.000 final reduction groups; almost 250.000 km networks (including 1.350 km non-operating), 41% on average pressure and 58% in low pressure. The networks are located mainly the North (148,500 km against 56,500 km in Central Italy and 43,700 km Islands and South Italy). The networks, on average, belong 75% to the same distributors and 5% to the municipalities. The ownership of the networks, which can be the distributor of Municipality or other organizations (for this reason the sum of the percentages may not equal 100), however, varies quite significantly between the different regions. 3.1 A CHANCE FOR NATURAL GAS-BIOMETHANE “Biomethane can launch a new Italian production chain that can significantly contribute to maintain benchmark technology related to components and methane-driven vehicles. In fact, Italy represents 77% of methane driven vehicles in Europe. The use of biomethane for transport mixed with conventional ( or fossil) fuels can contribute to reduce emissions of CO2 up to 40% compared to gasoline driven vehicles. Taken as pure biomethane it can reduce it up to 32 times. 4. BIOGAS INCENTIVIZING FRAMEWORK On 6th July 2012 the Ministry of Economical Development, together with the Ministry of Environment and Land&Sea Safeguard and the Ministry of Agriculture, Food and Forestry implemented the decree that disciplines the incentives of renewable energy productions, other than the photovoltaic one. The Decree eventually entered into force on 11th July 2012, and redefined substantially the incentive scheme of the renewable energy production. The decree enforces the general scope and principles that were previously provided by the legislative decree dated 3 March 2011, nr. 28 (legislative decree n. 28/2011), that was enforcing European Directives concerning the promotion of renewable sources and now effective to achieve the mentioned goals by 2020. In fact, the principles set by the legislative decree from which derives the new ministerial decree aims at reorganizing and empowering incentives to promote the energy production from renewable sources and energy efficiency that could reach the share of energy from renewable sources of the total gross consumption of energy by 2020 (i.e. 17%). Moreover, the legislative decree 28/2011 determined that the incentivizing criteria and related tools were to promote efficiency, simplification and stability of the incentivizing system on the long run, besides the reductions of obligations charged up to the consumers. It is interesting to recall the fact that the legislative decree nr. 28/2011 related to biogas incentives is supposed to aim at promoting: 15 • an efficient use of waste and by-products, manure or by-products of agricultural activities, food farming, agro-industrial, breeding and forestry, of products deriving from non-food farming, short production chains, framework agreements and industry agreements; • the development of cogeneration plants; • the realization and use , by agricultural businesses, of plants powered by biomass and biogas by agricultural activities, in particular micro and mini cogeneration. 4.1 REDUCTION OF INCENTIVES Besides various principles set out by the decree dated 6 July, it reduced the incentives, considering: • that renewable sources have already achieved a sensible development in the last years; • the comparison with production costs of other European countries; • the reduction of costs due to economies of scale related to the recent spread of production from renewable sources. The reduction of incentives would thus be connected on one hand to the need to reduce the obligations up to consumers to support renewable resources, on the other hand to criteria of production costs. The first one has been translated through a maximum limit of expense that can be incentivized and that is controlled by the tool of power share incentivizable. This share can be accessed either through an auction mechanism (agreed incentive to the best applicant, i.e. whoever applies for less in terms of value of the incentive), used for large power plants exceeding 5 MWel, or through an administrative mechanism of enrolment in a register up to a maximum: this register can be accessed if certain conditions are met and pursuant priority criteria provided by the decree. Biogas plants lower than 100 kW, can avoid these selection mechanisms accessing the incentive directly the moment they become operative. Though the global mechanism takes into account the cost connected to incentivizing the mentioned plants by not allowing to exceed the total limits applicable to all. 16 4.2 INCENTIVIZING FEES The values of the incentives are the following (they are valid for plants that became operative in 2013, whereas for the subsequent two years the decree applies a 2% reduction per each year): The basic incentive tariff can be increased if the following conditions are met: • Supplementary incentive for greenhouse gas reductions in the case of supply-chainbiomass-fuelled plants, but only for plants between 1 and 5 MWel (this is not particularly interesting for the agricultural biogas industry) • Supplementary incentive of € 30/MWh for compliance with the atmospheric emission requirements (not for waste) - monthly mean values calculated on the days of actual plant operation as measured by SME (SAE system for thermal power of up to 15 MWt) - ONLY FOR BIOMASS • High-efficiency cogeneration • "District heating": the distribution of heat energy in the form of steam or hot water produced by one or more sources provided to a large number of buildings or sites via a network. The energy may be used to heat rooms, for working processes and to provide household hot water 17 5. BIOMETHANE INCENTIVIZING FRAMEWORK Thanks to the work carried out by CIB and the other partners of the GGG the interest in biomethane among biogas and biomethane companies and national authorities has increased. In addition, the publication of the Italian biomethane law in December 2013 meant a great success for the sector . With the Ministerial Decree dated 5 December 2013, entered into force on 17 December 2013, the pathway to the promotion of biomethane production became operational. The ministerial decree, adopted by the legislative decree nr. 28, year 2011, that acknowledges in the national set of rules the directive 2009/28/CE promoting the use of renewable resources, represents a crucial step for the entire sector of anaerobic digestion as it widens the number of incentivizing possibilities to use methane which by the way is contained in biogas obtained from anaerobic digestion processes. This process raised a significant interest not only because of the incentivizing framework connected to the electric energy produced through biogas, but also because of the technology that is able to bring a lot of advantages to the re-utilisation of by-products, biowaste and re-induction into the agronomic cycle of fertilizing substances thanks to a virtuous use of digestate. The legislative decree nr. 28/2011 assumes that biomethane contained in biogas obtained from anaerobic digestion could be used both for the production of electric energy by direct combustion of biogas and, reasonably more useful, outside production sites through plants in cogeneration, that could produce electric energy and employ the heat produced by combustion of methane (this procedure is not always easy to realize on a biogas site) or by using it for transports contributing to the share that has to be achieved for the consumption of biofules and that at the moment is granted by imported biofuels. In this way the mandatory share that the European Commission has set would be achieved with an important contribution of national production that the Italian industry could benefit from as well as promoting anaerobic digestion processes. Last but not least, biomethane contained in biogas could be inducted directly into natural gas grids and be employed as traditional 18 methane. In order to use biomethane contained in biogas in this way the following conditions must be safeguarded: • it shall be separated from other products deriving from anaerobic digestion, i.e. carbon dioxide (water is typically eliminated in the first phases of biogas collection); the process of separation, commonly known as upgrading or purification of biogas to biomethane requires the installation of specific infrastructures and a certain consumption of energy; • that the absence of potentially noxious substances connected to the type of substances that are input into the digester at the beginning of the digestion process is verified; though anaerobic digestion of biomass of farming origin generally does not imply noxious substances issues. The condition hereof is directly linked to the compliance with regulations related to energy, gas and the water system that grant the quality standards of biomethane employed in grids; • if used through collection from the natural gas grid, dedicated infrastructures shall be built for the connection of the production plants to the grid and for the induction of biomethane into the grid; for this purpose Authorities should adopt provisions for the procedures and conditions concerning the connection of the biomethane production plants to the methane grid; • in case of induction into the grid, it shall meet with technical parameters of the grid in the connection point. The inter-ministerial decree refers to the existing regulations on methane, to the specific regulations grid managers disciplined in the grid connection code, as well as to temporary limitations concerning the induction of biomethane into the grid depending on the type of biomass employed at the beginning of the anaerobic digestion process (the biogas produced with bio-products and by-products can be inducted into the grid). A very important concept introduced by the decree is that the word “grid” refers also to the transport of biomethane by means of private fixed infrastructures, as well as tank carriers; this means that the biomethane can be transported to the location that uses or inducts it into consumption (to simplify, to the service station) through a mix of infrastructure and means of transport, that besides the existing methane transport grids, involve also private grids or tank carriers (without limitations, i.e. the use of private grids and tank carriers can replace the methane transport grids). Incentives can be provided in three different cases: 19 • in case biomethane is simply inducted into the grid • in case biomethane is used in high-yield cogenerating plants; • in case biomethane is used for transport In case the biomethane is inducted into the grid, the producer is compensated for 20 years from commissioning date with an additional biogas market value that is determined upon the difference between the double of the average price of gas on the balancing market (managed by GME) in 2012 and the average monthly price of gas on the same market (the reference to the balancing market of gas can be modified in future by the Ministry of Economical Development). This means that the producer will sell biomethane on the market earning the value of that market and in addition will receive an incentive equal to the above mentioned difference. The decree further sets that the plants with production capability higher than standard 250 cubic meters/hour are entitled to the employment of by-products as defined in table 1A of the decree dated 6 July 2012 or waste of at least 50% of weight. In “smaller” plants (with production capability up to standard 500 cubic meters/hour) the producer can opt to have the biomethane collected by the GSE at a price equal to the double price of the average price of gas on the balancing market in 2012. In conclusion, some modulations concern the size and source. Specifically, the incentive is increased by 10% for plants with production capability up to standard 500 cubic meters/hour whereas it is reduced by 10% for plants with production capability higher than standard 1000 cubic meters/hours and an increase of 50% is acknowledged for biomethane produced exclusively starting with by-products as defined in table 1A of the decree dated 6 July 2012. 20 In case biomethane is used in high-yield cogenerating plants the incentives for the production of renewable electric energy provided by the ministerial decree dated 6 July 2012 has the same application procedures (thus on the electric production) determined by the same decree save the bonus whereof at article 26 of the decree hereof. The conditions to apply for the incentive, beside the obvious need to acknowledge high-yield cogeneration of the electric energy and heat production plant, requires a bilateral agreement of biomethane provision as well as notifying this agreement to the GSE. Furthermore it is also important to note that the net incentivizable electric energy production takes account of auxiliary services of the biomethane production plant. In case biomethane is used in transport biofuel release for consumption certificates are allocated as incentive for 20 years from commissioning date (DM MIPAAF 29 April 2008, nr.110) to subjects who release biomethane for transport consumption upon entering into a bilateral agreement with the biomethane producer. This agreement will define the duration and the share-out of the incentive between producer and subject that releases biomethane for consumption; GSE must be notified of the mentioned agreement. The main question that must be answered is how many release for consumption certificates (CIC) are allotted, the conditions and the values of these incentives. For what regards the number of CIC (namely the above mentioned certificates) that are allotted it is important to note that the applicable regulations generally entitle one release for consumption certificate of 10 Gcal biofuels, whereas in case biofuels derive from byproducts or waste, 5 Gcal are enough to obtain a CIC (so called double counting). The ministerial decree dated 5 December 2013 includes also biomethane in the double counting if produced with the following pattern: • biodegradable share of urban waste after the separate collection; • by-products as per comma 5-ter of article 33 of the legislative decree 3 March 2011, nr. 28, that are not representing a productive or commercial usefulness besides their employment for the production of fuel or energy, as defined, identified, and described by the legislative decree 3 April 2006, nr. 152; • seaweed and non edible substances, these latter ones as defined by article 33, comma 5, legislative decree 28/2011, table 1B of the Ministry of Economical development decree dated 6 July 2012; • by-products defined by article 33, comma 5-quater, legislative decree 3 Marc 2011, nr. 28, listed in table 1 A by the Ministry of Economical Development decree dated 6 July 2012, save regulations provided by the legislative decree dated 3 April 2006, nr. 152. To obtain the so called double counting, biomethane must meet with sustainable criteria disciplined by Ministerial Decree of MATTM (Ministry of Environment and Sea Safeguard) dated 23 January 2012 that provides specific guidelines for the biomethane to be defined by the CTI within 60 days of entering into force of the decree dated 5 December 2013. Moreover: • the authorization to build and become operative must contain clear reference to the biomass employed; in particular in case of co-digestion of biological product weighing up to 30%, the increase of the double counting is allotted on 70% of the produced biomethane; • the check of the raw material is in charge of the Ministry of Agriculture Food and Forestry (it also refers to a simplified procedure in a calendar year of the amount of product and byproduct used). 21 For what regards the value of CIC there are no official specifications, beside the fact that the subjects not complying with biofuel release for consumption dispositions are applied sanctions. The current exchange market of CIC is handled privately and the transactions are notified to the GSE. Obviously in the future this market must be regulated on fully open agreements. Moreover, it is important to point out that the above mentioned incentive is allotted also to the producer that doesn’t use the grid and inducts the biomethane in a distribution plant for transport that the same producer built at own expenses (not pre-existing to the decree). In this case the CIC is issued with a further increase of 50% for the first 10 years from distribution plant commissioning date. All this is applicable to those plants which were commissioned after the decree entered into force; although the decree introduces an interesting amendment related to the plants existing at the date the decree entered into force no matter if they convert their production (the entire one) to biomethane or if they use part of the biogas produced, also as a consequence of a greater production capability due to biogas, for the production of biomethane. In particular, these plants are entitled to the above mentioned incentives as specified in the following table: Type of incentive Grid induction incentive Amount 40% Transport use incentive 70% In car use incentive 40% Key to table: see excell The duration of the entitlement to the incentive is of 20 years for existing plants that are not applying for the incentive, that is the residual period of entitlement to the incentive period with a 5-year increase. To apply for the incentive applicants must be issued a title by the GSE; in particular this title has to be requested within a year from commissioning date of the plant in compliance with the rules set by the GSE. In conclusion, the decree can be practically executed when further technical requirements are met, as specified in the following table (the timing is obviously to be referred to the entering into force of the decree). 22 1 2 3 4 5 6 7 who when Electric Energy and Gas whithin 60 days Authority what deliberation on the calculation of selfconsumptionin biomethane production Ministry of agriculture food and forestry Electric Energy and Gas within 60 days Authority procedures on the requirements of raw materials for the double counting Liability and procedures to measure the quantity inducted in the grid and identification of the liable party and procedures for the certification and measurement of biomethane incentivizable Electric Energy and Gas within 60 days To use biomethane in transport, must Authority regulated determinationation of commissioning date and measurement of biomethane released for consumption and incentivizable Electric Energy and Gas within 60 days defines the procedures with which the Authority incentives for biomethane grid induction are covered in relation to transport tariffs of natural gas CTI - Italian termo- within 60 days guidelines for the sustainability of thecnical Committee biomethane GSE within 60 days implementing procedures from the last provision, see 3,4,5,6 6. BIOGAS DEVELOPMENT PLANT BY 2020 6.1 DEVELOPMENT PLAN The main numerical parameters related to the development plan of Italian biogas by 2020 proposed herewith are summarized by the following table (as later clarified the development plan doesn’t imply an increase of costs for the consumer other than the one already foreseen and the new electricity production from biogas will be integrated with the production of biomethane and incentivized following new criteria). 23 production development of electric energy from biogas 2014 2015 2016 2017 2018 2019 2020 total incre ase electric power 900 incentivized by allinclusive tariff new electric 100 100 50 250 production from biogas covered by margins derived from registers MD 6 July 2012 (MWel) new electric 10 50 50 70 70 250 production from biogas covered by margins derived from the conversion to biomethane in existing biogas plants (MWel) overall increase of 100 110 100 50 70 70 500 electric production from biogas (MWel) Development biomethane production 2014 2015 2016 2017 2018 2019 2020 total incre ase Production of biomethane (Nm3 million) New production of 4 38 58 90 109 187 187 672 biomethane (Nm3 million) equivalent electric 2 19 29 45 54 93 93 336 power to therealized production of biomethane (Mwe eq) evolution of the biomethane sector evaluated in equivalent electric power (Mwe eq) 2014 2015 2016 2017 2018 2019 2020 total incre ase 24 total by 2020 1400 total by 2020 672 total by 2020 equivalent electric power from biogas (Mwe eq) Increase of electric power from biogas (Mwe) Overall Development biomethane production (Biomethane as it is and biomethane in biogas in electric production) 902 119 139 2015 1.984 2.132 2016 2017 2018 2019 2020 total total by incre 2020 ase 2.311 2.511 2675 2939 3.202 1.222 3.202 4 38 58 90 109 187 187 672 110 121 110 55 77 77 550 2014 Progressive total (million m3) annual increase of biomethane production as it is (Nm3million) annual increase of equivalent biomethane production in elctricity production from biogas (Nm3 million) Italian potential % biomethane production 1736 25% 145 104 163 163 40% 834 40% For what regards employment (both permanent and temporary during all the phases of the making of the plants) and the investments, the development plan proposed would entail the following evolution (cf. following table). 25 Development of employments 2014 2015 2016 2017 2018 2019 2020 total increas e total by 2020 Employees 1268 7 Increase of permanent employess 2441 6 1674 994 direct 7933 indirec t 5.154 680 increase of temporary employees investment developmen t 1213 8 2014 Investmens in Million EU increase of investments 2015 1955 2040 1.161 1211 1467 871 2296 1363 2296 1363 794 829 596 933 933 1417 8 1479 0 1063 9 1665 2 1665 2 85049 2020 total increas e 2016 2017 2018 2019 11728 4239 total by 2020 8158 559 653 682 490 767 767 3919 In short, the goals of the plan can be summarized as follows 26 By 2020 achievement of 40% of the potential of Italian biogas, by 2030, a production of about 3,2 billion Nm3 equivalent biomethane/year, a bit less than 2/3 of the production of Italian natural gas, almost doubling the rate of internal self-supply of methane; Creation of about 12.000 new permanent jobs, to be added to the ones safeguarded in the agricultural production chain connected to the production of biogas/biomethane; 14-15.000 temporary jobs in a year during the realization phase of the development plan; Additional investments of 4 billion Euro, mainly realized by employing Italian technologies and manpower, strengthening the competitive standing on the foreign market of agricultural and industrial branches such as: ◦ Agricultural production chains ◦ Agricultural engineering ◦ Component production industry related to methane and biogas ◦ Methane vehicles industry 6.2 GOALS AND SPECIFIC TOOLS The goal is to pursue the development related to the production of electric energy from biogas in a flexible and coordinated way in order to: - Promote a greater use of biogas in traction by replacing imported biofuels; - Promote the use of biofuels and thus improving efficiency in reducing CO2 emissions and use of agricultural land (advanced biofuel as biomethane, ethanol from lingocellulose, hydrogen); - Allow the creation of a share for the cogeneration from biogas at a fixed price on the component A3 triggering the allocation of incentivized production during the high-priced hours; - Incentivize a more efficient use of biogas energy promoting biogas plants that connect the electric system with the methane system. The sustainability of the development plan (meant to not increasing the costs for the final consumer more than already foreseen) is a feasible if the realization of new plants (granting development and continuity to the sector) is supported by: - The resources allocated for the registers required by the Ministerial Decree dated 6 July 2012 and not used (in fact, many plants will not be realized); - The saving on the obligation A3 deriving from the re-conversion (also partial or in any case voluntary) of the existing production from sole electricity production to biomethane production. Compatibly with the guidelines of the European Commission concerning competitions: 27 - The access of new plants to authorization shall take into account the threshold of 500 kWe; - For plants up to 500 kWe, the electric production will be incentivized by means of a 20-year feed-in premium; - The production of biomethane will be incentivized through tools introduced by the decree dated 5 December 2013 by granting a full incentive instead of a partial 70% even in cases of reconversion of existing plants Essentially there are two main intervention tools: 1. Definition and implementation of the regulations provided by the biomethane decree dated 5 December 2013 and their integration with further regulations which are deemed to be necessary for the realization of the development plan (completion of the regulations of biomethane); 2. “Register recovery”: IV° – V ° register for biogas by 2015 and 2016 and voluntary switch form sole electricity production to a combined production of electricity and biomethane in existing plants with the setting-up of new registers by 2017-2020 for new combined production of electricity from biogas and biomethane (new production development); 3. Given the programmability of biogas plants, the introduction of a flexible mechanism should promote the capability of plants of being managed flexibly. Since the all-inclusive tariff reduces the amount charged to the system in case the production is concentrated in high-priced hours, the mechanism hereof is supposed to promote a programmed shift of the production in these hours leading to a significant reduction of the obligation in A3 for the final consumer (promotion of the flexibilization in managing the plants); 4. Useful development of the heat produced by the plant (energetic efficiency development); 5. Support of R&D activities by creating two clusters related to the biogas refinery technology (cluster biogas refinery). 6.2.1 COMPLETION OF BIOMETHANE REGULATIONS GOALS 28 - More clearness concerning the biofuel release for consumption certificates (CIC) - Incentive to a more efficient use of energy from biogas that promotes an improved integration between the processes of the plant and the time trend of the residual load of the system until it reaches an energetic exchange between the electric grid and the biomethane production (power to gas) - Promote biofuels that are more efficient in reducing CO2 emissions and the use of agricultural land (Advanced biofuel as biomethane, lingo-cellulosic derived ethanol, hydrogen, etc.) Tools - Clearness and bankability of the CIC market - Producers of biomethane should be granted CIC directly, having the GSE collecting them at a minimum collection price that is the actuation of equipollent tools (minimum collection price e.g. 50% of the average sanction value for obliged subjects) - The direct grant of the CIC should occur by means of a monthly ex ante assignment against the exclusive use of matrixes listed in table 1A and 1B - The above mentioned CIC shall be collected by the GSE, upon request of the producer and the applicable conditions; the GSE will sell the collected CIC to the obliged subjects. Further, GSE should foresee a tariff rate on fuels that would cover possible capital loss occurring in the collection mechanism, in other words, resorting to a revenue deriving from the carbon tax which is still object of governmental study - Introduction into the legislation of the concept of advanced biofuel as valid in other countries (USA for example) and as proposed by the European Commission (October 2012), in relation to the land efficiency and the reduction of greenhouse gas emissions. - Granting 100% of the CIC to plants that opt for coexistence (Art. 6 biomethane Ministerial Decree) that adhere to the voluntary reduction of at least 15% power - Incentivizing the realization of biogas plants with a P2G 3 technology producing onsite electric energy from intermittent sources, in other words extracting electric energy from the grid to stabilize the residual load, by granting a certificate with an energetic content of 3,5 Gcal for the methane produced from hydrogen; - Ex ante approval of a mid-term period increase of the biofuels induction obligation by 2020 subject to law n. 81/2006, foreseeing a share for advanced biofuel (as shown in the following table) 3 Power to gas: the production of hydrogen by means of electrolysis of water by collecting electric energy from the grid and subsequent methanation of biogas CO2 to methane. 29 2014 2015 2016 2017 2018 2019 2020 4,5% 5,0% 5,5% 6,0% 6,5% 7,0% 7,5% 0,50% 1,0% 1,0% 1,5% 2,0% 2,5% 4,5% 4,5% 4,5% 5,0% 5,0% 5,0% 5,0% d-TOTAL OBLIGATION 4,5% WITH DOUBLE COUNTING (a+b) 5,5% 6,50% 7,0% 8,0% 9,0% 10,0% a-Total obligation b-High efficient biofuels c-Other biofuels 6.2.2 DEVELOPING NEW PRODUCTION Use of resources deriving from not having used registers I-II-III provided by the Ministerial Decree 6 July 2012 Goals The registers provided by the Ministerial Decree dated 6 July 2012 allow allocating for the production of electricity and amount deriving from biomass and biogas of about 500 MW. In 2013 there were about 300 MW given out for an overall EU220 million out of which about EU 90 million are due to biogas. The experience has shown that the power really produced is much lower than the one allocated in the registers: form the EU220 million foreseen there only a poor 10% was assigned (EU21,4 million in all out of which EU16,3million to biogas with a corresponding power estimate of some 13 MW). The total amount that could be allocated by the registers would be ca. EU330 million. At the moment there is no reliable forecast related to the final outcome of the realization processes of the plants, though it is reasonable to think that at least 50% will not be built. The not realized power quantity, some 250 MWe, and the related cost commitment of EU185million, should be provided again to the biogas sector until 2020. Tools 30 - Opening of new registers dedicated only to biogas in 2015, 2016 and 2017 (IV-V and VI register) – also in these cases excluding the access outside the register mechanism of the plants up to 100 KWe. At least two registers a year shall be organized. - Admitting plants up to 500 KWe - Feed-in premium incentive, that entitles the producer to induct electric energy into the grid, i.e. self-consumption, for 20 years - Entity of the feed-in premium incentive that differentiates size of plant subject to what already started by the Ministerial Decree dated 6 July 2012, more precisely: o €170 /MWhe to plants up to 300 KWe o €140/MWhe to plants from 301 KWe up to 500KWe - Obligation to exclusive use of biomass as shown in tables 1A and 1B (this regulation aims at easing the coexistence with biomethane and avoiding monoculture of small grain cereals) - Adding to the priorities of admittance to the registers, after the generic preference already foreseen for plants in agricultural businesses, the specification “plants to be realized in regions depending on the relation between installed MWe /agricultural UAL” inversely proportional to the existing value of this relation - Promoting the cogenerating functioning (cf. chapter 2.6) admitting to the calculation of useful heat, the one derived from the process used in the production of biomethane and/or semi-finished products for industrial fertilizer etc. 6.2.3 VOLUNTARY RENOUNCEME NT OF THE ALL-INCLUSIVE TARIFF AND PROPORTIONAL CREATIO N OF A NEW ANNUAL AL LOTMENT TO DEVELOP NEW COMBINED ELECTRICITY/BIOMETHANE PRODUCTI ON CAPABILITY Tools - Promote an increased use of biogas for traction - Allow the creation of a further batch (beside the previous share deriving from the recovery of non-used availability in the registers subject to the Ministerial Decree dated 6 July 2102) for the production of electric energy in combination with the production of biomethane at an unvaried obligation on component A3 Tools - 31 Entitled Subjects to the reduction applied by the all-inclusive tariff: when a voluntary reduction of at least 15% occurs (this document will later assume an average reduction of 30%) to the level of production (electrical MWh) admitted to the incentive by the all-inclusive tariff, the operator remains with the all-inclusive tariff in the residual period at the tariff in force (the producer can reduce the power of an equal percentage, i.e. producing less hour/year per incentive). Due to this voluntary reduction the producer is entitled to obtain 100% CIC - with the saving that is generated, a new batch can feed the opening of new registers for the years 2016-2020, applying the regulations of the registers IV-V° and VI that is defined annually for the amount of power admitted to the incentive in relation to the saving generated from the renouncement of the all-inclusive tariff, therefore at unvaried revenue for the component A3 of the electrical tariff In addition all the tools mentioned at the previous chapter are applied. 6.2.4 PROMOTION OF PLANT MANAGEMENT FLEXIBILIZ ATION Goals - Reducing the obligation charged to the consumer by promoting the production flexibilisation - Providing system programmability with a positive contribution - A flexible production is based on the fact that biogas plants are, within certain limits, programmable. The potential of programmability would allow to concentrate the production in high-priced hours that, for the existing plants and the incentive structure (basic all-inclusive tariff), would mean a reduction of the obligation for the component A3. Tools - Transform the power limit for the assignment of the all-inclusive tariff in an energy limit (maximum 8760 MWh/year incentivizable) - Determine a simplified procedure to modify the arrangement of the plants - Assigning a modulation component when production is concentrated in high-priced hours within certain limits (the goal to concentrate can be defined by GSE depending on saving targets which are then shared with the producers) - The producer is obliged to define a production program to meet with mandatory goals - At least 50% of the saving realized on A3 is assigned to the producer 6.2.5 DEVELOPMENT OF ENERGEY EFFICIENCY In addition to what above mentioned it is to be underlined that the current electricity production from biogas scarcely accompanies a useful use of the heat produced. If the heat generated and usable from one plant of 1MW was employed to satisfy the heat needs of a client in the nearby, the client could save more than EU100.000/year on equivalent methane gas (cf. following table). 32 estimate of the saving for the final consumer deriving from the use of useful heat produced in biogas plants thermic power usefully usable (kWt) 500 production hours 4880 Thermic energy (MWht) 3 methane PCI (kWhto/ m ) Avoided quantity of methane Avoided cost from methane purchase (EU/ m3 average) (EU/Year) 2440 10 271111 0,45 122000 For this reason, beside the mentioned regulations, the coexistence of incentivizing the production of electricity from biogas/biomethane with the promotion of energetic efficiency must be carefully clarified (i.e. titles of energetic efficiency). 7. URGENT ACTION PLAN TO DEVELOP ITALIAN BIOGAS/BIOMETHANE 1. Publication of the implementing decree dated 5 December 2013 by AEEG, CTI, GSE and MIPAAF that will allow the production and use of biomethane 2. Clarification of the real value of CIC and their assignment procedures 3. Clarification of future national approaches related to biogas, such as gaining an understanding whether and how the sector will be incentivized in the coming years 33 LIST OF ABBREVIATIONS el electrical ha hectare KW kilowatt KWh kilowatthour m3 Cubic metre Nm3 Norm cubic metre MW megawatt th thermal to total 34