Free tools and calculators for UK smart home owners — EV charger costs, balcony solar savings and smart plug energy estimates. No sign-up required.
EV Home Charging
EV Charger Cost Calculator
Estimate your upfront installation cost and annual charging bill — then see how much you save vs public rapid charging.
Calculate my EV charging costs →
Balcony Solar
Balcony Solar Savings Calculator
See how much a plug-in balcony solar kit could save you per year, what you’d earn from exports, and the payback time.
Estimate my solar savings →
Smart Plugs & Energy
Smart Plug Savings Calculator
Find out how much standby power is costing you and how quickly a smart plug pays for itself with scheduling.
Cut my standby waste →All tools are free to use, with no sign-up required. Figures are UK 2026 estimates based on our in-house guides. We add new calculators regularly — EV, solar and energy topics first.