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    A Canadian firm, Buchanan Renewable Energies, is to begin an investment into Liberia's biomass industry that will grow to US$20 million in October and offer 300 jobs by end of the year. The company will start shipping 90 major pieces of equipment to Liberia by the end of August. Daily Observer (Monrovia) - July 24, 2007.

    KNM Process Systems Sdn Bhd, has secured a RM122 million (€26/$36m) order to build a biodiesel plant in Pahang, Malaysia, for Mission Biofuels Sdn Bhd, a subsidiary of Australian biofuels company Mission Biofuels Ltd. The plant will have a biodiesel output of 750 tonnes per day and glycerine output of 82 tonnes per day. Malaysia Business Times - July 24, 2007.

    AlgoDyne Ethanol Energy Inc. confirms that its retail partner, Canadian Green Fuels, has entered into an agreement with Cansource BioFuels to open a new biodiesel production facility in Mayerthorpe Alberta. The deal will see the construction and development of a community based, integrated crushing and biodiesel facility to process 10 million litres of ASTM certified canola based biodiesel which will be scaled up to produce 40million litres by 2010. BusinessWire - July 23, 2007.

    The Center for Management Technology announces the second Biomass-to-Liquids Technology conference will take place in Vienna this year, from 12 to 13 September. The current state of BTL-technologies will be presented and discussed. Biomass-to-Liquids conversion pathways are seen by many as promising avenues into the world of second generation biofuels that relies on the use of a broad variety of possible biomass feedstocks. CMT - July 23, 2007.

    Gulf Ethanol Corporation, a Houston-based energy company, announced today that it has initiated negotiations with representatives of government and industry in Uruguay. Discussions, coordinated by the U.S. Department of Commerce, centered on the synergy between Gulf Ethanol's interest in exploiting the potential of sorghum as a non-food fuel stock for ethanol production and the ideal conditions for growing the crop in Uruguay. The company criticizes the use of food crops like corn for ethanol in the U.S. and is seeking alternatives. Yahoo Press Release - July 20, 2007.

    Dutch company Capella Capital N.V. announces its investment in BiogasPark N.V. and acquires a 20 % stake upon the foundation of the company. The remaining shares are held by the management and strategic investors. BiogasPark N.V. will invest in the field of renewable energy and primarily focuses on financing, purchasing and the maintenance of biogas plant facilities. Ad Hoc News - July 20, 2007.

    Bioenergy company Mascoma Corp. is to build the world's first commercial scale cellulosic ethanol plant in Michigan where it will collaborate with Michigan State University. The $100 million plant will rely on the biochemical, enzymatic process that breaks down biomass to convert it to sugars. One of the factors that attracted Mascoma to Michigan was the recent $50 million federal grant MSU received to study biofuels in June. MSU will help in areas such as pretreatment technology for cellulosic ethanol production and energy crops that can be utilized by the plant. The State News - July 20, 2007.

    PetroChina, one of China's biggest oil companies, aims to invest RMB 300 million (€28.7/US$39.6m) in biofuel production development plans. A special fund is also going to be jointly set up by PetroChina and the Ministry of Forestry to reduce carbon emissions. Two thirds of the total investment will be channeled into forestry and biofuel projects in the provinces of Sichuan, Yunnan and Hebei, the remainder goes to creating a China Green Carbon Foundation, jointly managed by PetroChina and the State Forestry Administration. China Knowledge - July 19, 2007.

    Netherlands-based oil, gas, power and chemical industries service group Bateman Litwin N.V. announces it has signed an agreement to acquire Delta-T Corporation, a leading US-based bioethanol technology provider, with a fast growing engineering, procurement and construction division for a total consideration of US$45 million in cash and 11.8 million new ordinary shares in Bateman Litwin. Bateman Litwin - July 18, 2007.

    TexCom, Inc. announced today that it has signed a letter of intent to acquire Biodiesel International Corp. (BIC), and is developing a plan to build an integrated oilseed crushing and biodiesel production facility in Paraguay. The facility, as it is currently contemplated, would process 2,000 metric tons of oil seeds per day, yielding approximately 136,000 metric tons (approximately 39 Million Gallons) of biodiesel and 560,000 metric tons of soy meal pellets per year. Initial feedstock will consist mainly of soybeans that are grown in the immediate area of the proposed production plant in the Provinces of Itapua and Alto Parana. MarketWire - July 18, 2007.

    Spanish power company Elecnor announced that it will build Spain's biggest biodiesel production plant for €70 million (US$96.48 million). The plant, in the port of Gijon in northern Spain, will be ready in 22 months and will produce up to 500,000 tonnes of biodiesel a year from vegetable oil. The plant will be one of the world's biggest. Spain has decided to impose mandatory blending of biofuels with conventional fossil fuels as part of European Union efforts to curb greenhouse gas emissions. Elecnor [*Spanish] - July 18, 2007.

    The University of North Dakota Energy & Environmental Research Center (EERC) conducted a feasibility study to determine the most economical solutions to provide biomass energy to the isolated Chugachmiut Tribal Community in the village of Port Graham, Alaska, located on the Kenai Peninsula about 180 miles southwest of Anchorage. The village is only accessible by air or water, making traditional fossil fuel sources expensive to deliver and alternative forms of energy difficult to implement. The case study based on decentralised bioenergy offers interesting parallels to what would be needed to provide energy to the developing world's huge population that lives in similarly isolated conditions. EERC - July 18, 2007.

    According to a basic market report by Global Industries Inc., world biodiesel sales are expected to exceed 4.7 billion gallons (17.8 billion liters) by 2010. Though Europe, with a share estimated at 84.16% in 2006, constitutes the largest market, and will continue to do so for the coming years, major growth is expected to emanate from the United States. The automobile applications market for biodiesel, with an estimated share of 55.73% in 2006 constitutes the largest as well as the fastest growing end use application. Other applications independently analyzed include the Mining Applications market and the Marine Applications market. PRWeb - July 18, 2007.

    O2Diesel Corporation announced that it has received the regulatory approvals necessary to start delivering its proprietary diesel ethanol blended fuel, O2Diesel, in the French market. The approvals pave the way for O2Diesel to move forward into the next stage of its European market development strategy by commencing deliveries to a number of targeted fleets in France. MarketWire - July 17, 2007.

    The BBC World Service is hosting a series of programmes on the global obesity pandemic. Over the coming two weeks a range of documentaries and discussions will be held on the obesity time-bomb that is growing all over the West, but also in the developing world. In North America, a quarter of people are now morbidly obese, 60% is overweight, and one in three children will become obese. The epidemic is spreading rapidly to China and India. BBC World Service - July 16, 2007.

    A new report from Oregon State University shows the biofuels industry is on track to be a $2.5 billion chunk of the state's economy within 20 years. The study identifies 80 potential biodiesel, ethanol and biomass facilities which could produce a combined 400 million gallons (1.5 billion liters) per year of ethanol and another 315 million gallons (1.2 billion liters) of biodiesel. On an oil equivalent basis, this comes down to around 38,000 barrels per day. Oregon State University - July 16, 2007.

    Jatropha biodiesel manufacturer D1 Oils has appointed a leading plant scientist to its board of directors. Professor Christopher Leaver, Sibthorpian professor of plant science and head of the plant sciences department at Oxford University, has joined the Teesside company as a non-executive director. Professor Leaver, who was awarded a CBE in 2000, is a leading expert in the molecular and biochemical basis of plant growth and differentiation. D1Oils Plc - July 16, 2007.

    Panama and South Africa are set to cooperate on biofuels. A delegation consisting of vice-minister of Foreign Affairs Azis Pahad, of Finance, Jubulai Moreketi and of Finance, met with Panama's vice-chancellor Ricardo Durán to discuss joint biodiesel and ethanol production and distribution. Panama's goal is to become a hub for internationally traded bioenergy, making use of the strategic position of the Canal. La Prensa Gráfica [*Spanish] - July 14, 2007.

    Spanish investors are studying the opportunity to invest in agro-industrial projects in Morocco aimed at producing biofuel from the Jatropha plant. Morocco’s Minister for Energy and Mines, Mohammed Boutaleb, said Moroccan authorities are willing to provide the necessary land available to them, provided that the land is not agricultural, is located in semi-arid regions, and that the investors agree to use water-saving agricultural techniques, such as drip-feed irrigation. Magharebia - July 14, 2007.

    Philippine Basic Petroleum Corp. plans to raise as much as 2.8 billion pesos (€44.4/US$61.2 million) through a follow-on offering and loans to finance a 200,000 liter per day bio-ethanol plant in the province of Zamboanga del Norte. The move into biofuels comes in anticipation of the implementation of RA 9367 or the Philippines biofuels law. RA 9367 mandates five percent bioethanol blending into gasoline by 2009, and 10 percent by 2011. Manila Bulletin - July 14, 2007.

    The Michigan Economic Development Corporation last week awarded a $3.4 million grant to redevelop the former Pfizer research facility in Holland into a bioeconomy research and commercialization center. Michigan State University will use the facility to develop technologies that derive alternative energy from agri-based renewable resources. Michigan.org - July 13, 2007.

    Fuel prices increased three times in Mozambique this year due to high import costs. For this reason, the country is looking into biofuels as an alternative. Mozambique's ministries of agriculture and energy presented a study showing that more than five million hectares of land can be used sustainably in the production of crops that would produce biodiesel fuels. The first phase of a biofuel implementation plan was also presented, identifying the provinces of Inhambane, Zambezia, Nampula and Cabo Delgado as the first to benefit. News24 (Capetown) - July 12, 2007.

    The Malaysian Oleochemical Manufacturers Group (MOMG) has urged the government for incentives and grants to companies to encourage the development of new uses and applications for glycerine, the most important byproduct of biodiesel. Global production of glycerine is currently about one million tonnes. For every 10 tonnes of oil processed into biodiesel, one tonne of glycerine emerges as a by-product. Bernama - July 12, 2007.

    BioDiesel International AG has acquired 70 per cent of the shares in Lignosol, a Salzburg based company that is making promising progress in Biomass-to-Liquids conversion techniques. The purchase price is in the single-digit million Euro range. ACN - July 10, 2007.

    Gay & Robinson Inc. and Pacific West Energy LLC announced today a partnership to develop an ethanol plant in Hawaii based on sugarcane feedstocks. The plant's capacity is around 12 million gallons (45 million liters) per year. The partnership called Gay & Robinson Ag-Energy LLC, will also ensure the continuation of the Gay & Robinson agricultural enterprise, one of the oldest in Hawaii. Approximately 230 jobs will be preserved, and a large area of West Kauai will be maintained in sustainable agriculture. Business Wire - July 10, 2007.

    Water for Asian Cities (WAC), part of UN-Habitat, is extending partial financial support for the construction of several biogas plants across the Kathmandu valley and develop them as models for municipal waste management. The first biogas plants will be built in Khokna, Godavari, Kalimati, Patan, Tribhuvan University premises, Amrit Science College premises and Thimi. The Himalayan Times - July 09, 2007.

    EnviTec Biogas's planned initial public offering has roused 'enormous' interest among investors and the shares have been oversubscribed, according to sources. EnviTec has set the IPO price range at €42-52 a share, with the subscription period running until Wednesday. EnviTec last year generated sales of €100.7 million, with earnings before interest and tax of €18.5 million. Forbes - July 09, 2007.


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Tuesday, July 24, 2007

Study: EU biogas production grew 13.6% in 2006, holds large potential

According to a newly published Energy Barometer on Biogas, the renewable fuel has a large potential in Europe and is growing rapidly amid increasing concerns about oil and gas prices and climate change. In 2006, around 5.35 million tonnes of oil equivalent (mtoe) was produced in the EU, an increase of 13.6% compared to 2005. The production of electricity from biogas grew by 28.9% over the same period. Germany remains European leader and noted a 55.9% growth in 2006 in electricity generated from the renewable gas.


The Biogas Barometer [*.pdf] was produced by a group of renewable energy groups led by Observ’ER as part of the EurObserv’ER projects which monitor the progress of renewable energy development within the Union. It looks at production figures per country, per type of biogas production method and application, and at current policies. The report further shows how European biogas R&D, technologies and services are finding new export opportunities.

Biogas has seen a growing interest in the EU because of the fuel's excellent greenhouse gas emissions and energy balance (earlier post and here). Moreover, biogas is a generic term hiding a wide diversity in both the methods in which it is produced and the ways in which it is valorised. This abundance of potential feedstocks and applications makes it a highly versatile biofuel.

Versatility

Biogas can be either collected directly in landfill sites or produced using digesters. It is possible to transform any type of organic waste into biogas. Effluents are treated in sewage purification plants and household waste in solid waste methanisation units. Slurries, agricultural waste and energy crops can be methanised either in small agricultural units or in large-scale centralised codigestion units (collective units that treat different types of waste associated with a considerable share of slurry).

Valorisation methods vary according to the types of deposit, to methane quality and richness, as well as to market outlets in proximity and policies that are implemented. Rubbish dump biogas, the most abundant deposit, is mainly used to produce electricity that is injected into the power grid. In the case of sewage purification plants (urban and industrial), small agricultural units, centralised co-digestion or solid waste units, CHP (combined heat and power) type production is most often used. In CHP configurations, the production of heat directly contributes to the methanisation process (it serves to keep the digester at a constant temperature). Large size units are also capable of supplying a heat network in the case where commercial outlets exist.

Once it has been purified, biogas can also be used in the form of fuels for vehicles running on natural gas (CNG) (earlier post) or be reinjected into the natural gas distribution network, when this is so permitted by national legislation. Both applications are being undertaken in several member states. Use of the green gas in fuel cells is a recent development (more here).

Production keeps growing
According to the Biogas Barometer, primary energy production of biogas in the EU markedly increased once again in 2006, with 13.6% growth with respect to 2005, i.e. a total production of 5.346 mtoe. This last figure only includes production that is intended to be valorised, and it therefore does not include biogas that is burned in flare stacks.

When it comes to the share of different feedstocks, 'rubbish dump' deposit represents the largest share of production (3.116mtoe). On the other hand, methanisation biogas is no longer represented for the most part by sewage purification plants, the "other biogas" category has moved out in front, in particular thanks to the development of on-farm biogas applications. In terms of final energy, gross electricity production is growing very strongly (+ 28.9%, for a total of 17.3TWh), notably thanks to a strong increase in the electricity produced in CHP systems:
:: :: :: :: :: :: :: :: :: ::

For the first time, this CHP production exceeds the amount of electricity produced alone. Concerning valorisation in the form of heat, it would be proper to point out that satisfactory monitoring is much more difficult in this case. Statistics generally evaluate the volumes of heat sold, without taking the quantities of heat that could be self-consumed into consideration. According to the Barometer figures, the use of biogas heat progressed very little, + 1% to 631,1 ktoe in 2006:

German success story
As can be seen on the EU-wide map (click to enlarge), in Germany, the current development of primary energy from biogas is principally made thanks to the production of electricity of small farm methanisation units functioning in combined heat and power (CHP) process. At the end of 2006, approximately 3,500 biogas units were in service. Additional biogas capacity amounted to 550 MWe for the year 2006 alone with about 50 new plants being installed each month.

These investments impact sector electricity production, which, according to the AGEEStat (statistical organisation of the Ministry of the Environment), increased by 55.9% in 2006 (+ 2.6 TWh with respect to 2005) to reach a total of 7.3 TWh.

This success is explained by the application of a particularly attractive feed-in tariff for small biomass electricity production plants (including agricultural biogas). The feed-in tariff, which decreases by 1.5% per year beginning on January 1st 2005, is established in the following manner:
  • 17.16 c€/kWh in 2006 (16.99 c€/kWh in 2007) up to 150 kW;
  • 15.63 c€/kWh (15.45 c€/kWh in 2007) up to 500 kW;
  • 12.64 c€/kWh (12.51 c€/kWh in 2007) up to 5 MW;
  • 8.15 c€/kWh (8.03 c€/kWh in 2007) up to 20 MW.
The gas from rubbish dumps and from sewage purification plants has a specific feed-in tariff of 7.44 c€/kWh in 2006 (7.33 c€/kWh in 2007) for units up to 500 kW and of 6.45 c€/kWh (6.35 c€/kWh in 2007) for units up to 5 MW.

These feed-in tariffs are increased by 2 c€/kWh if the electricity is produced from an innovative technology, like a fuel cell or a gas turbine.

Biogas, a national priority in Sweden
Valorisation of biogas is clearly one of the country’s energy priorities in Sweden. This sector is not only devoted to the production of electricity (54 GWh in 2006) and heat (20.7ktoe), but also to the production of vehicle fuel as well as for reinjection into the natural gas network (replacing the equivalent of 1.8 million m3 of natural gas per year).

There are numerous incentive systems in Sweden promoting the use of biogas. This energy is not subject to the tax on CO2. Moreover, the central government grants subventions to the local governments and to business firms that invest in solutions for reducing greenhouse gas emissions in which biogas plays a role.

There is also a sizeable tax exemption for purchasing vehicles that run on biogas fuel. The production of electricity is supported by a green certificates mechanism.

Codigestion is Danish specialty
In Denmark, the production of biogas comes for the most part from 20 codigestion units and small-scale farm production units (60%), that are far in front of the biogas produced from rubbish dumps (15%) and sewage purification plants (25%). CHP plant biogas has been particularly developed in Denmark and is at the origin of practically all of the biogas electricity produced in the country. Denmark is, moreover, the fourth biggest EU country in terms of biogas if primary energy production per inhabitant, with 17.4 toe per 1 000 inhabitants, is taken into consideration.

ROCs favourable to biogas in UK
In the absence of official figures from the DTI (Department of Trade and Industry), EurObserv’ER has estimated the United Kingdom production level at 1.696 mtoe. This figure would signify that the UK has given up its first place position in terms of primary energy production to Germany. However, the UK holds on as leader if we consider the indicator of primary energy production per inhabitant, with 28.1 toe per 1 000 habitants in the UK vs. 23.3 toe per 1000 inhabitants for Germany.

Growth of primary energy production in the UK is essentially due to an increase in production of electricity from rubbish dump gas. This type of biogas has particularly benefited from the green certificates system, the Renewable Obligation Certificates (ROCs).

The ROC system requires electricity suppliers to increase the renewable electricity share in total production each year.

The obligation level of 6.7% for the 2006/2007 period is going to be progressively increased to 15.4% in 2015. In this system, suppliers can either directly produce the renewable origin electricity themselves or buy certificates from renewable electricity producers. When the objective is not reached, the supplier must pay a fine of £32.33 (€47.22) for each MWh that’s missing. The electricity resulting from biogas from methanisation, rubbish dumps and sewage purification plants is eligible for this system.

3% growth in Italy
According to the first estimates made by the ENEA (Agency for Energy, the Environment and New Technologies), the production of primary energy and of electricity from biogas increased by 3% in Italy in 2006. Biogas plants using vegetal and organic waste are recognised by the GRTN (Italian power grid manager) as being able to participate in the national green certificates system. In the Italian system, producers and importers use these certificates to prove that they have fulfilled their legal obligations to supply a percentage of renewable origin electricity (2.7% in 2006).

The mean price of a green certificate in Italy has been constantly increasing and it reached 13.91 c€/kWh in 2006.

Spain favours electricity production
Electrical power plants running on biomass and biogas benefit from a specific scheme of the Royal Decree 436/2004, which establishes the feed-in tariffs for the different renewable sectors. Operators have a choice between selling their electricity directly on the market or selling it to an electricity distribution company. In this last case, the price set per kWh corresponds to 90% of the reference price of electricity determined each year by Royal Decree.

This tariff is applicable for a period of twenty years and then decreases to 80% of the reference price after this time. If the operators choose the market, they benefit from the market price plus a bonus representing 40% of the set reference price. Furthermore, another subsidy representing 10% of the reference price is added on to their remuneration.

This system has been relatively effective for biogas electricity production with, according to the IDEA (Institute for Energy Diversification and Saving), an 8.8% increase in 2006 with respect to the year before.

Feed-in tariff increase in France
The year 2006 marked a turning point in development of the biogas sector in France with the July publication of new sufficiently attractive tariffs to develop all the different biogas applications. This new tariff is set at between 7.5 and 9 c€/kWh, depending on installation capacity, to which a bonus for energy efficiency going up to 3 c€/kWh is added as well as a 2 c€/kWh prime for methanisation, and this for a period of fifteen years. This tariff should notably make it possible to create an agricultural methanisation sector (on-farm biogas and collective codigestion plants) which is practically inexistent in France today. At the same time, measures have been begun to simplify and make more fluid the technical conditions of access to the power grid.

Biogas electricity production, which only increased by 3.7% in 2006 (501 GWh), according to the Ministry of Industry, should thus rise in power during the next few years.


Industrialists reinforcing themselves
In the space of fifteen years, the waste methanisation industry has structured itself and succeeded in becoming a full-fledged economic sector. Several types of specific methanisation processes have been developed to respond to all of the different demands making up this expanding market.

Supported by their particularly active domestic market, the German actors are naturally among the most present in Europe. Inescapable on the household waste methanisation market, Linde KCA has a complete offer allowing it to propose effective solutions to treat wet or dry organic waste. The firm has already equipped 40 sites and had €160 million turnover in 2006. Several new installations are announced for 2007.

The biggest are planned for in Beijing (73 000 tons of waste treated per year) and in Lille (France), with a 62 000 ton capacity. The French site has the particularity of proposing, in parallel, valorisation in the form of heat (connection to a heat network) and in the form of fuel to supply a part of the municipal bus fleet.

Competitor of the German firm, the Valorga French company has been able over the years to develop and disseminate its house process (which has the same name as the company does).

Today a subsidiary of the Spanish group Urbaser, (the number one waste collection operator in Spain), Valorga has to its credit 19 site references using its technology, with capacities ranging between 10 000 and 300 000 tons of waste treated per year. The company knows how to market itself beyond the European border, since two production sites have been announced for China in 2007. The first, in Shanghai, shall treat 227 500 tons of raw household waste and 41 000 tons of fermentable waste each year. The second in Beijing, of a smaller size, shall convert 105 000 tons of household waste into energy.

Another type of waste and another actor: the German firm Schmack Biogas AG has known how to take very good advantage of the development of agricultural biogas sites, above all on its domestic market. Its turnover went from €34 million to €90 million between 2005 and 2006. Impressive growth that has naturally been reflected in terms of its number of employees as well, which went from 112 to 297 during the same period. Up until now, nearly 180 units have been equipped by Schmack, which is trying more and more to move beyond its borders by concentrating on Italy as well as on the American market.

There are numerous other companies that have developed methanisation processes adapted to all sorts of waste. By way of example, we can cite the Kompogas Swiss company, which equipped 4 new sites in Germany in 2006, the Belgian OWS which has announced a work site in Otaka (Japan) for 2007 and the BTA German company which, armed with its 25 references, is attacking the Japanese market on the Komoro site (70 000 tons of waste per year).

Efforts too late for White paper targets
The current dynamism of the overall sector is favourable overall. Some suggested that over the long term (2020-2030) the European biogas sector can replace all imports of natural gas from Russia (earlier post).

The real efforts made over the last few years by several member countries (United Kingdom, Germany, Denmark, Luxembourg and Sweden) are particularly eloquent with respect to the new sites created. Each of these countries has developed its own channel of valorisation in structuring cutting-edge technologies and industries.

These examples of success and their support mechanisms were able to inspire countries like France. France has in turn set up the conditions necessary for rapid development of its different sectors and notably of its agricultural biogas deposit that has remained practically unexploited up until now.

Within the EU, the potential of production of biogas from this last deposit is doubtless the most considerable. Agricultural biogas also has the advantage of being of excellent quality (rich in methane and poor in pollutants), which facilitates its valorisation.

It is also worth pointing out that the significant increase in the price of conventional energies associated with legislations that are more favourable to the biogas sector, have now opened up the way for energy production based in part on energy crops (notably corn) and not only on waste alone.

The important thing is to correctly balance the economic interests of these solutions with the energy constraints posed by these productions (for example, water consumption).

However, all these efforts, come too late to meet the ambitious objectives that the EU White Paper set in 1997 (15 mtoe in 2010). The Biogas Barometer forecasts, based on the answers received from experts to our questionnaires and on the growth of past years, that a quantity of around 8.6 mtoe can be expected. A low figure that would represent 5.7% of the target of the Biomass Action Plan of the European Commission, which esteems that an energy consumption of all biomass of 150 Mtoe in 2010 is realisable.


The Biogas Barometer was produced by Observ’ER within the framework of the
"EurObserv’ER" project, which unites Observ’ER, Eurec Agency, Erec, Jozef Stefan Institute and Eufores. The programme is financially supported by France's environment agency ADEME and by the Intelligent Energy program of the EU.

References:
EurObserv’ER: Baromètre biogaz - Biogas barometer [*.pdf]- May 2007.

The EurObserv'ER Barometer website.

European Commission: White Paper for a Community Strategy and Action Plan - Energy for the Future: Renewable Sources of Energy [*.pdf] - November 26, 1997.

EurActiv: Biogas has promising future in EU, study shows - July 24, 2007.



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