Audit Electric Draws,
Spot High-Cost Power Hogs.
Free electricity cost calculators: per-day, month, and year cost of any appliance from watts and hours — plus upgrade savings math. No sign-up.
True Duty Cycles
Refrigerators and space heaters cycle thermostats; we apply realistic 33%–50% compressor runtimes.
Vampire Phantom Standby
Televisions, gaming consoles, and cable boxes quietly consume 5–15W constantly when switched 'off'.
Energy Star Replacement Payback
Calculate how quickly upgrading a 15-year-old refrigerator pays for itself in avoided kWh.
ApplianceCost Calculators
Appliance Electricity Cost Calculator
Per-day, month, and year cost of any device from watts, hours, and your true rate.
Upgrade Savings Calculator
Old watts vs new watts — the annual savings that decides whether the LED or new appliance pays.
Technical Reference Guides
Vampire Devices: The Always-On Drain Hiding in Your Bill
Set-top boxes, routers, and sleeping consoles draw power 24/7. The census, the watts, and the smart-plug fix.
Your True Electricity Rate: Why the Bill Is 30% Higher Than the Headline
Delivery charges, taxes, and tiered rates hide behind the advertised price. How to compute the rate that honest math requires.