Tarculator compares UK electricity tariffs against your actual household — bedrooms, heating, solar panels, EVs — and tells you exactly how much each tariff costs per year.
Based on your home's real consumption profile, not generic averages.
Models export income and self-consumption to give you the full picture.
Dedicated off-peak EV rates factored in when comparing overnight-charge tariffs.
Accounts for battery systems that shift self-consumption away from peak hours.
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UK electricity prices vary enormously between suppliers and tariff types — flat rate, time-of-use, EV-specific, export-enabled. Most comparison tools show you a headline annual cost based on a standard profile. Tarculator goes further.
Enter your property details, heating system, solar setup, and EV usage once. Tarculator runs the numbers against up to three tariffs simultaneously, showing you a full cost breakdown so you know exactly where the money goes.
Built by a small independent team in the UK. Free to use. No account required.