
Biomethane PPAs and other business models: how to sell green gas
A biomethane plant can sell gas into the grid, to an end customer under a PPA, as a transport fuel, or with guarantees of origin separated out. We compare the models and their risks.
813 articles on biogas, biomethane, bioLNG, biohydrogen, waste-to-energy, waste and regulation — since December 2019. Filter by category, type, year and tag.
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A biomethane plant can sell gas into the grid, to an end customer under a PPA, as a transport fuel, or with guarantees of origin separated out. We compare the models and their risks.

On 14 September 2022 the European Parliament adopted its position on the revision of the Renewable Energy Directive, backing a 45% target in 2030. The Council wants 40%. Trilogue negotiations, crucial for biomethane and bioenergy, are beginning.

On 26 August 2022 gas quotations on the Dutch TTF hub closed above 330 euro/MWh, the highest ever. The peak resulted from fears about winter and supply restrictions from Russia.

How much heat a unit gives, how much the biogas plant itself uses and what to do with the surplus: heating buildings, drying, ORC, district heating networks. A balance with a calculation example.

The Act of 5 August 2022 introduces a plan for developing storage capacity, procedures for declaring emergency states and penalties for exceeding gas offtake restrictions. It enters into force on 1 September 2022.

On 16 August 2022 the US President signed the Inflation Reduction Act, the largest climate package in the country's history. It includes, among other things, a charge on methane emissions from the oil and gas sector and tax incentives for renewables, including biogas.

A liquefier requires far purer gas than the grid: CO₂ of the order of several dozen ppm, water below 1 ppm, trace H₂S and mercury. We describe the limits, the reasons and the methods of final purification.

How to store and apply digestate in line with the regulations: tank capacity, covering of lagoons, dates from the nitrates programme, distances from water and ways of reducing ammonia emissions.

In July 2022 the Philippines passed Republic Act 11898: large producers of plastic packaging must register EPR programmes and recover a rising percentage of packaging, from 20% in 2023 to 80% in 2028.

In the first Croatian premium auction for renewable sources all seven biogas bids were successful. 8.7 MW was awarded from a pool of 16.7 MW.

On 26 July 2022 EU energy ministers agreed a voluntary 15% cut in gas consumption for the period August 2022 – March 2023, with the possibility of moving to a mandatory reduction in the event of a "Union alert".

H1 2022: the day-ahead market at PLN 660.0/MWh exceeds the FIT of PLN 617.5/MWh. Should one move towards the market, and what about the positive balance in FIP?

The fourth round of British contracts for difference (CfD AR4, 7 July 2022) covered 93 projects and 10.8 GW, but no anaerobic digestion or biomass CHP. One waste-to-energy project received 45.99 GBP/MWh.

Air Liquide announced China's first biomethane project from agricultural and livestock waste in Huai'an, with annual production of about 75 GWh and injection into the city gas network.

To sell digestate as an organic fertiliser, a permit from the Minister of Agriculture is needed. We describe the steps: testing, opinions of units, UPPZ documents, labelling, supervision and restrictions on use.

What to service, when and why in a biogas cogeneration unit: oil changes, spark plugs, valve inspection, major overhauls and the effect of gas quality on costs.

On 16 July 2022 Regulation (EU) 2019/1009 on fertilising products began to apply. Digestate and compost can obtain the CE mark and, as products compliant with the regulation, benefit from free movement on the EU market.

On 6 July 2022 the Clean Fuel Regulations (SOR/2022-140) were published in Canada Gazette Part II, creating a federal market for credits for low-carbon-intensity fuels.

bioCNG is biomethane compressed to about 200–250 bar that powers gas vehicles. We explain the pressures, types of cylinders, fuel consumption, station construction and gas quality requirements.

The Gas Substitution Roadmap of July 2022 identifies electrification as the main path away from gas in Victoria, with biomethane and hydrogen as a complement for industry.

On 6 July 2022 the European Parliament failed to secure the majority needed to reject the complementary delegated act to the taxonomy. Gas and nuclear may be classified as sustainable on a transitional basis, subject to conditions.

How Chinese biogas policy works: from the 13th bioenergy plan (2016) and the 2019 guidelines to the 14th renewable energy plan — and why declarations do not always equal production.

Regulation (EU) 2022/1032 of 29 June 2022 obliges EU countries to fill gas storage to 80% by 1 November 2022, and to 90% in subsequent years.

In the night of 28 to 29 June 2022 EU environment ministers agreed their position on the reform of the ETS, the CBAM mechanism and the Social Climate Fund. This marks the start of negotiations with Parliament.