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The UK energy newsletter that doesn't work for the industry

Facts, data and straight opinion on energy bills, solar, batteries, heat pumps and the grid. For homeowners and business owners who think in payback periods. Five minutes a week.

Written by John O'Leary: 20 years in electrical, Retrofit Coordinator and Domestic Energy Assessor. About us

52% at night: the Economy 7 split Ofgem doesn’t recheck

Ofgem's own example says the averaged cap charges heat pump owners less than they cost. Responses close 20 November.

£134 of a £151 saving: the switching charge is back

Fixing this winter? A new fix with your current supplier avoids the charge. Ofgem decides in mid-November.

Heating oil up 90%: when a heat pump now wins

Five break-even prices, from 91p for a typical install to 49p for the best, plus the one question to ask any installer.

86% of new-build solar is up to 4 kW: the rule behind it

Developers can fit two panels where eight would go. Buying off-plan? Ask three questions before the roof goes on.

£6.88m in court. GB Energy just hired Ripple's founder

Ripple's members paid for a wind farm that went to someone else. The question to ask before buying any energy share.

£293 apart: nobody has set your January bill yet

UK gas jumped 3.9% on Friday. If you're weighing a fixed tariff, EDF's own break-even is £1,997.