Insights & Guides
Practical, research-backed guides on solar panels, heat pumps, government grants, and reducing your energy bills in 2026.
Retrofitting a Heat Pump in a 1960s Mid-Terrace: The Unfiltered Truth
We document the exact complexities of fitting a 200-litre hot water cylinder into a 70cm × 65cm airing cupboard, replacing 8mm microbore pipework, and achieving a real-world winter COP of 2.44. No sales pitch — just what actually happened.
Winter with a Tesla Powerwall 3: Analysing a Real January Bill in Bristol
A detailed breakdown of one Bristol household's January electricity bill — import/export figures, Octopus Flux tariff earnings, and the brutal reality of winter solar generation. The numbers might surprise you.
Off-Grid Heating in Cornwall: Oil vs. Heat Pump — 10-Year Total Cost Analysis
We model the granular financial comparison between fluctuating kerosene oil prices and an air source heat pump over a decade, for a typical 1970s Cornish farmhouse with 51% of county homes off the gas grid.