Our electricity fuel mix
As you may know, 100% of our electricity comes from renewable sources, and every year we need to let the regulator know where this comes from. Alongside every unit of renewable electricity we purchase is a snazzily named Renewable Energy Guarantee of Origin (REGO) certificate. These certificates allow Ofgem to verify the source of every supplier's electricity.
Our gas fuel mix
Our gas is 100% carbon neutral. We offset the emissions from the gas we supply by supporting carbon reduction projects around the world. We're the biggest buyer of green gas for homes in the UK so a chunk of our gas mix comes from renewable sources, like food or farm waste, too.
Every carbon offset certificate we buy is verified by one of three internationally-recognised standards: the Gold Standard, the Verified Carbon Standard or the UNFCCC's Clean Development Mechanism. These organisations ensure carbon reduction projects have a robust audit trail, and that carbon savings are additional to what would happen anyway and are sustained over time.
For each unit of green gas we buy, we receive the equally snazzily named Renewable Gas Guarantee of Origin (RGGO) certificates from either the Renewable Energy Association or the Biomethane Certificates from Green Gas Trading.
Generating our gas
We're the biggest buyer of green gas for homes in the UK. We provide 100% carbon neutral gas to all our members. For April 2019-March 2020, 4% was green gas produced from renewable sources like food or farm waste.
We work with generators who use a variety of feedstocks to produce their renewable gas. For April 2018 - March 2019, the latest data available, the breakdown was:
- Purpose-grown crops: 74%
- Food or farm waste: 18%
- Residues (e.g. vegetable peelings, cereal straw): 8%
We like to think this gas is as natural as your uncle's after a plate of sprouts. And it's produced pretty much in the same way!