All EV & Solar Tools
Free calculators for EV running costs, charging plans, fleet math and solar payback — Germany, Spain, Portugal, France, the United Kingdom and Pakistan.
EV Charging Cost vs Petrol Calculator
Compare your monthly EV charging cost against petrol. Enter your mileage and energy prices to see exactly how much you save.
EV Road Trip Planner
Plan charging stops for long drives: stops needed, total charging time and charging cost for your trip.
Electric Van vs Diesel Calculator
Fleet-grade comparison: yearly fuel savings and payback period when switching a diesel van to electric.
Solar Payback Calculator — Germany
System cost, German electricity prices and EEG feed-in rates: payback years and 20-year savings.
Solar Payback Calculator — Spain
Spanish sunshine hours, electricity prices and autoconsumo rules: when your panels pay for themselves.
Solar Payback Calculator — Portugal
Portuguese solar yield and electricity tariffs: payback period and long-term savings.
Solar Payback Calculator — France
French irradiance, TRV electricity prices and feed-in tariffs: solar payback made simple.
UK Solar Battery Sizing Calculator
How much battery storage do you need? Enter daily usage and array size for a tailored kWh recommendation.
Pakistan Net Metering Calculator
WAPDA/KE slab rates and NEPRA buyback: your bill before and after solar, plus payback period in Rs.