Switch to biogas
Your perspective in the biogas jungle Genuine biogas with Grünes Gas-Label
Tired of fossil fuels? You finally want to do something good for the environment? Our labels help you find your way through the confusing energy market! Change your supplier now and get real biogas.
Switching to a biogas tariff means getting one step closer to the goal of a climate-neutral energy supply. Find a suitable tariff easily in our comparison portal.
Concluding a contract with the new provider is very easy online. The new energy supplier will take care of the termination with your old provider! In this way, you help to drive forward the energy transition.
Switch to a certified electricity or biogas tariff now
There are already several online comparison portals for electricity and gas rates. So what's the point of another one?
At the comparison portal of the environmental associations, consumers can compare high-quality and exclusively certified green electricity and biogas tariffs.
"vergleich-dich-gruen.de" offers you the opportunity to actively participate in an energy transition that is nature-friendly, decentralized, citizen-oriented, public welfare-oriented, fair and pollutant-free through your purchase decision.
All providers at a glance
Provider | Biogas tariff with Grünes Gas-Label | Biogas share | Availability | Customer hotline | Website |
|---|---|---|---|---|---|
| ESDG Energy - Service Dienstleistungsgesellschaft mbH | ESDG - Natural Gas Premium (Tariff is covered in whole or in part by the special temporary regulation on procurement criteria). | 10 % |
You can find currently available rates on www.vergleich-dich-gruen.de. | ||
| EWS Electricity Works Schönau eG | Biogas climate | 10 % | |||
| Biogas Climate Plus | 20 % | ||||
| Biogas Climate Max | 100 % | ||||
| Green Planet Energy eG | proWindgas | 10 % | |||
| proWindgas plus | 10 % | ||||
| proWindgas vegan | 10 % | ||||
| proWindgas vegan plus | 10 % | ||||
| NaturStromHandel GmbH | naturstrom biogas 10 % | 10 % | |||
| RhönEnergie Fulda GmbH | RhönGas ÖkoRegio | 10 % | |||
| Constance Municipal Utilities GmbH | Enspire Green Gas | 10 % | |||
| SeeEnergie BiogasPlus (business customer tariff) | variable (min. 10%) | ||||
Notes on Green Gas certified products:
Individual, named biogas products are always certified, not the supplier itself. Some suppliers offer other, non-certified biogas products in addition to Green Gas products. So when you contact the supplier, please ask specifically for the product mentioned here!
This is what we have achieved together
By choosing a certified green electricity or biogas tariff, you are directly supporting the energy transition. For every kilowatt hour consumed, a fixed amount goes toward the expansion of renewable energies - that's sustainable thinking.
A raw material right on the doorstep
Like crude oil, natural gas is a finite resource whose extraction is becoming increasingly complex, expensive and environmentally harmful. Gas has to be imported to Germany over long distances.
Biogas produced from biomass is not only a renewable resource, but also a raw material that is available right on your doorstep. The potential for biogas production exists everywhere, in the form of renewable raw materials and green waste in the countryside or biogenic residues in the city (e.g. kitchen waste).
The conditions for sustainable and ecological production are therefore in place. For a 100 percent renewable energy supply, we need biogas.
The Grünes Gas-Label Standards ensure that biogas production is environmentally compatible and ecological. The seal of quality is only awarded to gas products that contain at least ten percent biogas.
Together for the energy turnaround
Your contact person
Christian Knops
Green Gas Certification Manager
What you should know about biogas
Grünes Gas-Label
Frequently asked questions
With Green Gas-certified tariffs, guaranteed investments flow into the expansion of renewable energies.
The level of investment is determined by a fixed amount per kilowatt hour consumed. Thus, your gas purchase indirectly influences the investments in the energy transition. The areas of support include the mobility transition, energy infrastructure, energy efficiency, and other projects that serve the energy transition, such as nature conservation, development cooperation, and education.
You can find the whole range in the criteria catalog for the Grünes Gas-Label.
Find out which suppliers offer gas tariffs with the Grünes Gas-Labelor contact your supplier and ask about a biogas tariff with the Grünes Gas-Label. Select a labeled tariff and sign the supply contract of the new supplier. The rest is similar to the electricity switch: The new gas supplier cancels the old contract for you at the next possible date and initiates everything else. Until the transfer, the local or previous supplier is obliged to maintain the gas supply. This means that there will be no interruption in supply.
You can find gas tariffs with the Grünes Gas-Label here.
Note: Individual, named biogas tariffs are always certified, not the supplier itself.
The Grünes Gas-Label is the only biogas quality label supported by leading civil society organizations. The supporting associations can be found here.
Through the work of the carrier associations in the board of directors and general meeting, they play a major role in shaping the certification to this day. Changes in the label's criteria, for example, must be approved by all the sponsoring associations.
The Grünes Gas-Label is awarded by Grüner Strom Label e.V., which has been awarding the Grüner Strom-Label for green electricity tariffs since 1998.
Biogas in general
Biogas is produced by the bacterial decomposition of animal or plant substances in a biogas plant. These substances can be, for example, biogenic residues, such as the waste from the organic waste garbage can or liquid manure from agriculture. The fermentation of these substances produces, among other things, biomethane. The resulting biomethane can be used as an energy source in the same way as natural gas and can be fed into the natural gas grid, for example. There are various ways to produce biogas and not all variants are ecologically sustainable.
Substrates, also called feedstocks, are the biogenic raw materials that are introduced into a biogas plant to produce gas. Here, a rough distinction can be made between three classes:
- Biogenic residues (e.g. biowaste from the organic waste garbage can, plant residues, residues from agriculture such as harvest and slaughter waste, liquid manure, slurry and dung).
- Sewage sludge and sewage gases from wastewater treatment plants, industrial processes, or commercial production (e.g., from biogenic residues in paper recycling).
- Renewable raw materials or energy crops (e.g., corn or through-grown silphia).
The abbreviation NawaRo stands for the term renewable raw materials.
This refers to plants or plant components that originate from agricultural production and are not used as food or feed, but are used materially or energetically, e.g. for the production of biogas.
Sewage gas is a methane-containing gas produced during wastewater treatment by the digestion of sewage sludge. Sewage gas contains between 45 and 70 percent methane by volume.
As the name suggests, this is gas that is produced artificially. Gas is produced from water in an electricity-intensive process called electrolysis. This concept is called power-to-gas. In this context, people often talk about green hydrogen. Green' here means that hydrogen is produced with the help of green electricity.
A biogas plant usually consists of a fermentation tank with gas storage, the so-called fermenter, as well as a preliminary pit, a secondary fermenter and fermentation residue storage.
The fermenter, the core of a biogas plant, is filled with the substrates (e.g. NawaRo and liquid manure from the preliminary pit). In the fermenter, the actual biogas formation takes place under exclusion of sunlight and oxygen. Depending on the initial substrate, biogas can be produced by wet or dry fermentation (= digestion). In wet fermentation, a high water content in the fermentation substrate makes the mass stirrable and flowable. Dry fermentation or solid-state fermentation is carried out with stackable organic biomass without mixing. However, it is rather rare in Germany.
The substrate is heated to around 35 to 55 degrees Celsius to accelerate the methane formation process. On average, the substrate remains in a fermenter for 30 days before degassing in the secondary fermenter for another month. The resulting biogas consists of 50 to 70 percent methane, plus carbon dioxide, hydrogen and hydrogen sulfide.
Depending on the end use (on-site power generation, feeding into the natural gas grid, etc.), the biogas is further upgraded. The remaining substrate mixture from the fermenter (digestate) is then reused by farmers as high-quality fertilizer for their fields.
The production of biogas is renewable, largely CO₂-neutral, can be decentralized and occurs independently of limited fossil energy sources. This makes it more environmentally friendly than conventional energy from large-scale power plants. However, biogas production can take place in very different ways from an ecological point of view.
To guarantee a sustainable energy supply, biogas must be produced in an environmentally compatible manner. This includes both the raw materials used and their processing, as well as the logistics of the substrates and the fermentation residues.
The energetic and material use of (anyway accumulating) organic residual and waste materials is part of a sustainable use of resources.
Only certain feedstocks may be used for biogas with the Grünes Gas-Label:
- Biogenic residues (e.g. biowaste from the organic waste garbage can, plant residues, residues from agriculture such as harvest and slaughter waste, liquid manure, slurry and dung).
- Sewage sludge and sewage gases from municipal wastewater treatment plants, industrial processes, or commercial production (e.g., from biogenic residues in paper recycling).
- Renewable raw materials (e.g. maize or through-grown silphia), but only if there is an ecologically sustainable operator concept that is conducive to the energy transition.
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Grüner Strom Label e.V. | Kaiserstrasse 113 | 53113 Bonn | Germany
Tel: +49 (0)228 / 522 611-90 | E-Mail: info@gruenerstromlabel.de
