Powerful Tools for
Smarter Energy Decisions
Free, NREL & DOE-aligned calculators and converters to model solar ROI, LCOE, battery sizing, EV TCO, heat pump balance points, and utility tariffs.
100% Free
No sign-up required
Engineering Math
NREL & DOE benchmarks
Privacy First
100% browser-based
EV Charging Planner
Forecast home charging cost, charging hours, and solar overlap.
EV Battery Replacement Cost Calculator
Estimate the future cost of replacing an EV battery.
EV Charging Time Calculator
Estimate how long it will take to charge your EV.
EV Fleet TCO Calculator
Calculate the total cost of ownership for commercial EV fleets.
EV Range Calculator
Calculate real-world EV range.
EV Road Trip Planner
Plan your next electric road trip.
EV Total Cost of Ownership Calculator
Calculate the true cost of owning an EV over 5 or 10 years.
EV vs Gas Cost Calculator
Compare the annual fuel cost of driving an electric vehicle versus a gas-powered car.
V2H Savings Calculator
Calculate potential savings from bidirectional EV charging (V2H).
Small Calculations,
Big Impact
Every calculation you make brings us closer to a cleaner, more sustainable future.
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