Guides: biogas and bioenergy on the farm
Factual answers to the questions that come up before and after building a farm plant: tariffs, permits, technology, costs and operation. As of October 2026; uncertain figures are flagged as such.
Biogas After the EEG: Options for Existing Plants
When a German biogas plant's EEG payment ends: tenders, flexible operation, biomethane, conversion to a small manure plant or closure, as of October 2026.
Biogas Feedstocks: Slurry, Manure, Silage and Residues
Which feedstocks suit a farm biogas plant in Germany? Typical gas yields of slurry, manure and silage, the 80 % manure rule for small plants and pitfalls.
Biogas Heat Use: Livestock, Drying and Local Heat
Making good use of biogas CHP heat in Germany: livestock buildings and farmhouse, drying, local heat networks, heat revenue, supply contracts and funding.
Biogas Plant Costs on the Farm: Investment and Operation
What a farm biogas plant in Germany costs: investment and running cost ranges, the main cost blocks and what drives the price of a small manure plant.
Biogas Plant Maintenance: CHP, Biology, Inspections
Biogas plant maintenance: indicative CHP service intervals, biology monitoring, agitators, safety inspections and full service contracts versus own work.
Biogas Plant Permits in Germany: Building and Emissions Law
Permits for a farm biogas plant in Germany: privileged status under the BauGB, 4th BImSchV thresholds, water law (AwSV), TRAS 120 and the grid connection.
Biogas Plant Safety in Germany: Duties at a Glance
Biogas plant safety in Germany: TRAS 120, ATEX zones, risk assessment, hydrogen sulphide, pressure relief, inspection duties and the operating log.
Biomethane: Biogas Upgrading and Grid Injection
How biogas becomes biomethane: upgrading technologies compared, grid injection in Germany, minimum size, bio-CNG and bio-LNG, and what it means for farm plants.
Choosing a Biogas Contractor: References, Quotes, Contracts
How to find the right contractor for a biogas plant in Germany: checking references, making quotes comparable, warranties, guarantees and the service contract.
CHP Units for Biogas: Technology, Efficiency, Sizing
Gas Otto or dual fuel, efficiencies, full load hours and flexible operation: how to choose the right biogas CHP unit for a farm plant or small manure plant.
Digestate as Fertiliser: Nutrients, Storage, Spreading
Using biogas digestate in Germany: typical nutrient contents, Fertiliser Ordinance rules, storage capacity, low-emission spreading and separation on farm.
EEG Feed-in Tariff for Biogas: Section 44 and Worked Example
How Germany's EEG pays for manure-based biogas: section 44 reference values, annual reduction, feed-in tariff versus direct marketing and the 20 year term.
Farm Biogas Profitability: How to Run the Numbers
Does a farm biogas plant in Germany pay off? Electricity and heat revenue, costs, own power use and sensitivities, with an example for a small manure plant.
Funding for Farm Biogas and Bioenergy in Germany
Funding for farm biogas, wood heating and local heat in Germany: EEG tariffs, development loans, BEW, BEG and state schemes, as of October 2026.
Manure-Only Digestion on the Farm: Pros, Cons and Rules
What manure-only digestion is, how it cuts methane from slurry stores, its pros and cons and how it relates to small manure plants under Germany's EEG.
Planning a Farm Biogas Plant: Five Phases from Idea to Plant
Planning a farm biogas plant in Germany: feasibility, business case, design and permits, construction and commissioning, and operation, step by step.
Small Manure Biogas Plants in Germany: Rules and Herd Size
How small manure biogas plants work under section 44 of Germany's EEG: 75 and 150 kW limits, the 80 per cent manure rule, tariffs and a rough herd size check.
Wood Heating on the Farm: Wood Chips or Pellets?
Wood chips or pellets for a German farm? Own timber, storage, boiler sizing, 1. BImSchV emission limits, funding and selling heat to neighbours explained.