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Anaerobic biodigesters are very common here in Germany. The residue is a really good fertilizer that can be applied to the fields. At least here in G the nitrog

Anaerobic biodigesters are very common here in Germany. The residue is a really good fertilizer that can be applied to the fields. At least here in G the nitrogen application from this has to be documented and subtracts from the N fertilizer budget farmers are allowed to apply.

usrusr 7y ago
The only downside is that to the best of my knowledge, those installations tend to be designed without storage in mind, running the generator at whatever time is convenient thanks to flat feed-in rates. Making them dispatchible would be by far the single lowest-hanging fruit in the whole field of grid storage. (Correct me if I'm wrong, I'd love to be)
- adrianN 7y ago
  They provide such a minuscule amount of power that I'm not sure whether making them dispatchable is worth the effort.
  - usrusr 7y ago
    Take a look at https://energy-charts.de/power.htm https://energy-charts.de/power.htm : pumped storage peak discharge hardly ever reaches a level of contribution as high has biomass and that is basically all the non-fossil dispatchability that we have. Meanwhile, biomass is running as baseload more stubbornly than even nuclear. Making the biomass contribution dispatchible would be huge.
- jsilence 7y ago
  Changes in regulation in G require operators to upgrade generator capacity in order to utilize gas storage to produce electricity at peak demand and not flat all the time.
  - usrusr 7y ago
    Is that change already in place? Do you have any links or keyword suggestions for a bit of news googling? (German would be fine for me, but English is obviously preferable for the benefit of other readers)
    - jsilence 7y ago
      It is already in place since Jan 2017 I think. Energieeinspeisegesetz is the relevant keyword. But this redesign of the regulation is really complicated with a lot of different cases and exceptions. No concise summary in english I'm afraid. edit: fixed typo
      - usrusr 7y ago
        Thanks, 2017 was already quite useful for narrowing down search results.

usrusr 7y ago

The only downside is that to the best of my knowledge, those installations tend to be designed without storage in mind, running the generator at whatever time is convenient thanks to flat feed-in rates. Making them dispatchible would be by far the single lowest-hanging fruit in the whole field of grid storage. (Correct me if I'm wrong, I'd love to be)

adrianN 7y ago
They provide such a minuscule amount of power that I'm not sure whether making them dispatchable is worth the effort.
- usrusr 7y ago
  Take a look at https://energy-charts.de/power.htm https://energy-charts.de/power.htm : pumped storage peak discharge hardly ever reaches a level of contribution as high has biomass and that is basically all the non-fossil dispatchability that we have. Meanwhile, biomass is running as baseload more stubbornly than even nuclear. Making the biomass contribution dispatchible would be huge.
jsilence 7y ago
Changes in regulation in G require operators to upgrade generator capacity in order to utilize gas storage to produce electricity at peak demand and not flat all the time.
- usrusr 7y ago
  Is that change already in place? Do you have any links or keyword suggestions for a bit of news googling? (German would be fine for me, but English is obviously preferable for the benefit of other readers)
  - jsilence 7y ago
    It is already in place since Jan 2017 I think. Energieeinspeisegesetz is the relevant keyword. But this redesign of the regulation is really complicated with a lot of different cases and exceptions. No concise summary in english I'm afraid. edit: fixed typo
    - usrusr 7y ago
      Thanks, 2017 was already quite useful for narrowing down search results.