A friend was a senior hands on engineer at British sugar , the wash waste veg matter produced methane when decomposing , so they lads got their heads together and built a two tank digester , and a low pressure gas separator & a small low pressure storage tank similar to a gasometer . Alvin told me they ran a large heated glasshouse over winter , made hooch and had a rule .....you put your own poop in the digester ..There's a farmer in Somerset, a ham by the name of Simon, who has a very successful setup, generating methane from slurry and using it to power some gensets feeding the grid. Cost a lot to set up, but will be breaking even this year and profit from next year.
Got his finger in the biomass pie, too.
He's also doing a bit of solar, with the likelihood of expanding that a lot, iirc.
I know he's not the only one, not by a long way, so the idea has caught on, it's likely the initial investment that's held it back for a lot of farmers.












