"I guess we're harvesting sunlight in a roundabout way."
The Ministry for the Environment says agriculture accounts for about 48 per
cent of New Zealand's carbon emissions. A single cow produces about as
much greenhouse gasses as a car each day.
New Zealand also has the highest annual per capita methane emissions in
the world, with about 600kg produced. The global average is about 100kg.
The Ministry for the Environment estimates methane emissions in New
Zealand have increased by about 10 per cent since 1990, as more farms have
converted from raising sheep to dairy.
If you are exploring Biogas recovery and generation of power this paper is helpful
TechniPharm's Greenwash dung buster and ECOBAG storage system can be incorporated in these systems. There is a system working in Morrinsvile and also one in start up in Southland.
In combination with a Cowhouse/ Herdhome or Feedpad this may have great potential. Be prepared to spend a lot in time and funds and have minimal returns but a great deal of satisfaction in generating "your own power"
The fastest and easiest recovery is from gas to hot water, a 500 cow herd and ECOBAG Nutrient Capture Effluent storage system and a gas burner can heat up to 1000 L hot water a day... free and easy and that is reducing Greenhouse gasses to something which is useful.