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- Building Heat Loss & Insu…Estimate heat loss watts from envelope area, ΔT, and R-value.
- LED Savings & ROICompare legacy bulb vs. LED costs, CO₂ savings, and payback time for a single fixture.
- 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.
- Electric Heater CostEstimate heating cost from wattage, run hours, days, and electricity rate.
- Heat Pump vs. Resistance …Compare electric heating cost: resistance strips (COP 1) vs. heat pump COP.