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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Sources give straw utilisation in China of 86–90%, but the method of calculation is often unclear. Some provinces, such as Hunan, are moving away from a total burning ban, and in 2025 the central level also softened its approach.
The same daily mass of feed can provoke a different digester response, depending on how the doses are spread over time and on composition. We explain what the EPA AgSTAR guide says about this and how to keep records.
The call under the programme "Improving energy security through the use of biomethane" is to open on 30 April 2026: budget PLN 800 million, grant of up to 45% of costs, minimum 2 million m³ of biomethane per year, no liquefaction.
An analysis of the Clean Fuel Standard programme in Washington State: the January 2023 start, the role of biomethane, and the changes to book-and-claim accounting and avoided methane crediting that came into force on 20 November 2025.
In Greece, electricity from biogas and biomass is supported by a premium (FiP): the difference between the reference price (up to 219 EUR/MWh for biogas up to 1 MW) and the monthly market price.
On 1 April 2026 the EPA published the RFS rule for 2026–2027: record volumes, about 1.36 billion cellulosic RINs in 2026 and the withdrawal of eRIN, which matters for landfill gas.
What limits apply to waste incineration plants, how are emissions measured and what data is publicly available? We explain the role of the IED, the BAT conclusions and continuous and periodic measurements.
On 27 March 2026 the EPA signed the final RFS "Set 2" volumes for 2026–2027: 1.36 billion cellulosic RINs in 2026 and 1.43 billion in 2027, above the values in the June 2025 proposal.
Adding hydrogen to the gas grid lowers energy density and affects appliances. We calculate the effect of 20% H₂ by volume, discuss limits and compare with biomethane, which requires no infrastructure changes.
The European Commission approved an Italian aid scheme worth EUR 6 billion for renewable hydrogen production until the end of 2029. The biogenic route is also eligible, alongside electrolysis powered by RES; the target is 200 thousand tonnes per year.
Hungary supports electricity from biogas and biomass through METÁR (premiums awarded in auctions), the old KÁT system for existing installations and a five-year brown premium.
French biogas electricity was supported by the BG11 and BG16 tariffs (15–17.5 c€/kWh up to 500 kW) and CRE tenders; since September 2025 there have been no new BG16 contracts, and PPE 3 moves away from cogeneration.
On 24 March 2026 European industry associations published the Joint Biomethane Declaration with ten priority actions. The REPowerEU target is 35 billion m³ of biomethane by 2030, while production is about 22 billion m³ of biogases.
On 12 March 2026 the Chinese parliament approved the 15th Five-Year Plan: a target to cut CO₂ intensity by 17% in five years, around 25% non-fossil energy, and hydrogen and nuclear fusion among future industries.
How to write an emergency plan that works at three in the morning: scenarios, responsibilities, alerting, gas shut-off and drills. A table of scenarios with actions.
A missing measurement in a BMP test is a common situation. We show what interpolation can and cannot change in the result, how to flag it and why the end of the curve must not be "written in".
In Slovenia electricity from renewables and cogeneration is supported by a scheme managed by Borzen: guaranteed purchase or an operating premium. Biogas receives on average about EUR 151/MWh.
SDE++ supports biogas in cogeneration only with an electrical efficiency of at least 20%, and biomass combustion only for heat; slurry mono-digestion has separate capacity thresholds.
Temperature, pH, FOS/TAC and digester loading determine fermentation stability. An overview of parameters, typical ranges and rules for gradually increasing the load in an agricultural biogas plant.
A BMP test measures how much methane can be obtained from a given substrate under anaerobic conditions. We explain the course of the test, the units, interpretation of the curve and situations in which it is worth ordering one.
Dumping slurry and sludge at sea was banned in Korea in January 2012, and food waste leachate in 2013. Digestate from slurry biogas plants goes mainly as liquid fertiliser; in December 2025 a bill was submitted to change the limits on its application.
Receiving waste for fermentation requires a waste processing permit or an integrated permit. We describe the authority, the application, annexes, inspections, security for claims and the period of validity.
Fruit pulp, whey, pomace, fats and slaughterhouse waste have a high methane potential, but require control of loading, variability of composition, and compliance with sanitary rules and the Waste Database (BDO).
In February 2026 the Bundesnetzagentur announced tenders for more than 1 GW: 726.7 MW for biomass and 300 MW for biomethane. The price cap for biomethane was raised by 10% to EUR 0.2313/kWh because the 2025 round received no bids.
