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
Electricity Bill Estimator
Break down your monthly and annual electric bill appliance by appliance with tiered, flat, and Time-of-Use (TOU) tariff modeling.
Backup Generator vs Home Battery Calculator
Compare 10-year total cost of ownership, outage fuel burn, tax credits, and emissions between standby generators and LFP batteries.
Demand Charge Calculator
Analyze commercial demand charges and peak-shaving savings.
Electricity Cost Optimizer
Directly compare a flat-rate tier against a time-of-use plan and estimate monthly bills.
Energy Inflation Calculator
Project your future utility bills.
Green Hydrogen Cost Calculator
Calculate the Levelized Cost of Hydrogen (LCOH).
Microgrid Feasibility Tool
Assess the feasibility of taking your property off-grid.
VPP Revenue Estimator
Estimate annual revenue from participating in a Virtual Power Plant.
Small Calculations,
Big Impact
Every calculation you make brings us closer to a cleaner, more sustainable future.
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