Calculators
Free, no-login tools to help you make faster decisions on EVs, solar, and battery storage — using real data from your country.
Part of The Long Sunrise — the whole argument, from the first fire →
Zero-Bill Home Calculator
Size a solar + battery system for your home. Find out if you can zero your electricity bill using real tariffs, real BESS products, and your actual household load.
Shared Residential BESS
Model a community solar + battery system for condos and apartments. See per-unit savings, developer ROI, payback periods, and bulk discount impacts.
EV vs ICE — Total Cost of Ownership
Compare the 5-year and 10-year cost of owning an electric vehicle versus a petrol equivalent — fuel, maintenance, depreciation, and incentives included.
Solar Payback Calculator
Enter your roof size, local solar yield, and electricity tariff to get an accurate payback period and 25-year savings projection.
EV Charging Cost Calculator
Estimate your monthly and annual charging costs based on your EV's battery, local electricity rates, and daily driving distance.