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- Building Heat Loss & Insu…Estimate heat loss watts from envelope area, ΔT, and R-value.
- Home Insulation SavingsEstimate annual heating and cooling savings from upgrading wall insulation and windows—before/after energy use and efficiency score.
- LED vs. Incandescent ROIEnergy and bulb replacement savings when matching lumens with lower watts.
- Smart Thermostat SavingsHVAC kWh reduction from setback schedules and seasonal rates.
- Window Solar Heat Gain (S…Cooling load from glazing SHGC, area, and sun exposure.
- Microgrid ROIBreak-even timeline and 10–20 year returns for solar, storage, and on-site generation microgrids.
- BESS Round-trip Carbon CostEstimate annual kg CO₂ from battery round-trip conversion losses and compare grid charging vs. renewable charging.
- Solar Water Heater Effici…Estimate thermal efficiency, absorbed kWh, and electric heating savings from tank volume, ΔT, sun hours, and collector area.
- Small Wind Turbine YieldEstimate rotor power (W), daily kWh, and annual energy from blade diameter, average wind speed, and system efficiency.
- Standby Power AggregatorAdd TVs, chargers, consoles, and adapters to see total vampire power cost and what you could buy instead.
- Lighting Circuit LoadSum fixture watts, compute circuit amps, and check breaker utilization against the 80% continuous-load guideline.
- Electricity Bill EstimatorEstimate your bill from total kWh usage and rate per kWh.