16 December

Brilliant idea out of the UK, where polluting firms pay (as a form of carbon offsetting) to retrofit social housing with energy efficiency changes (like insulation), solar panels, batteries, and heat pumps for heating and hot water. The residents are understandably elated, much more comfortable homes, at a fraction of the old cost. Many use meter-based electricity, where they pay as they use. Now they often get credits on the meter instead.