What is the Home Energy Planner?
How our free tool helps you plan your home energy upgrades in the right order, with live pricing, grant eligibility and installer availability for your postcode.
How the planner works
A step-by-step guide to using the Home Energy Planner, what information you need to enter and how we generate your personalised upgrade sequence.
Why upgrade order matters
Why insulating before installing a heat pump, and fitting solar before a battery, gives you better results and lower costs than doing it the other way around.
How we calculate costs
The data sources behind our cost estimates, how we use real MCS installer pricing, regional adjustments and what assumptions we make.
How we calculate savings
How we estimate annual savings from each upgrade, the energy price assumptions we use and how self-consumption, export rates and tariffs factor in.
Grant eligibility checking
How the planner automatically checks your eligibility for BUS, ECO4, GBIS, 0% VAT and LA Flex, and applies available grants to your cost estimate.
Payback period methodology
How we calculate payback periods for each upgrade, what discount rate we use, how we handle energy price inflation and what the 25-year lifetime view shows.
Interpreting your results
How to read your personalised upgrade plan, what the cost and saving figures mean, how to compare scenarios and when to get a professional survey.
Limitations & assumptions
What the planner cannot account for, including exact roof orientation, structural issues, planning constraints and why a professional survey is still essential.
Frequently asked questions
Common questions about the Home Energy Planner, including data privacy, accuracy, whether it works for flats and how often we update the pricing data.