CONSIDERED TOOLKIT
Free tools to help you decide
Independent calculators built from real-world testing, not marketing figures. Every default is an editable UK estimate you can replace with your own numbers.
Octopus Energy Tariff Comparison
See every Octopus Energy electricity tariff currently available for your region, ranked by estimated annual cost using live pricing pulled straight from Octopus.
Open tool →Solar & Battery Size Finder
Not sure what size solar array or battery you need? Answer questions about your usage, when you're home and your goals to get a sizing range to take to installers.
Open tool →Home Battery Comparison Tool
Compare up to six home battery systems side by side by installed cost, usable storage, power output and expansion cost, then see which best suits your household.
Open tool →Home Energy Investment Calculator
Model solar panel and home battery payback using your own tariff and quote, then compare the same upfront money invested elsewhere instead.
Open tool →EV vs Petrol & Diesel Cost Calculator
Work out whether an electric car actually costs less once a home charger, realistic charging costs, road tax and the 2028 pay-per-mile charge are included.
Open tool →Home Energy Quick Estimate
Don't have your bills or a quote to hand? Answer four quick questions and get a rough solar and battery payback estimate with typical UK assumptions filled in for you.
Open tool →SUPPORT CONSIDERED
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Every calculator here is free to use, with no login and no data sent anywhere. If they've helped you make a better decision, you can support the research, testing and ongoing development behind Considered in whichever way suits you.
Referral disclosure: some links can financially benefit Considered. They are clearly marked and never change any calculator, its assumptions or its results.