https://kilowattledger.docsanddeadlines.com Run the numbers on solar, batteries, and heat pumps before a salesperson does. en Sun, 23 Aug 2026 01:02:49 +0000 https://kilowattledger.docsanddeadlines.com/envelope/blower-door-ach50-cfm50-audit-report/ https://kilowattledger.docsanddeadlines.com/envelope/blower-door-ach50-cfm50-audit-report/ A blower door report shows two numbers and only one came off the gauge. What volume, the one-point 1.1 factor, and your climate zone do to the other. Sun, 23 Aug 2026 00:00:00 +0000 https://kilowattledger.docsanddeadlines.com/tariffs/net-metering-net-billing-buy-all-sell-all/ https://kilowattledger.docsanddeadlines.com/tariffs/net-metering-net-billing-buy-all-sell-all/ One 8,000 kWh array on one Arizona tariff is worth $1,189, $763, or $778 a year depending only on which export structure the meter is wired for. Find yours. Sat, 22 Aug 2026 00:00:00 +0000 https://kilowattledger.docsanddeadlines.com/solar/panel-inverter-warranty-three-layers/ https://kilowattledger.docsanddeadlines.com/solar/panel-inverter-warranty-three-layers/ The line that says 25-year warranty is three contracts signed by two companies. What each one pays for, and where each one lands when the installer folds. Sat, 22 Aug 2026 00:00:00 +0000 https://kilowattledger.docsanddeadlines.com/proposals/solar-proposal-12-required-items/ https://kilowattledger.docsanddeadlines.com/proposals/solar-proposal-12-required-items/ A proposal quoting 11,900 kWh from 8.40 kW claims 1,417 kWh per kW-DC. Twelve items decide whether that number survives contact with your own tariff sheet. Fri, 21 Aug 2026 00:00:00 +0000 https://kilowattledger.docsanddeadlines.com/payback/electric-bill-four-numbers-solar/ https://kilowattledger.docsanddeadlines.com/payback/electric-bill-four-numbers-solar/ Georgia Power prints 15.08 cents per kWh; the kWh actually costs 21.29. Four lines on your own bill set a solar payback, and two of them are not printed. Thu, 20 Aug 2026 00:00:00 +0000 https://kilowattledger.docsanddeadlines.com/heatpump/heat-pump-vs-gas-furnace-breakeven-cop/ https://kilowattledger.docsanddeadlines.com/heatpump/heat-pump-vs-gas-furnace-breakeven-cop/ Your gas rate and your electric rate decide the COP a heat pump must beat. The formula, worked on EIA state figures: yes in Washington, no in Minnesota. Wed, 19 Aug 2026 00:00:00 +0000 https://kilowattledger.docsanddeadlines.com/incentives/residential-clean-energy-credit-expired/ https://kilowattledger.docsanddeadlines.com/incentives/residential-clean-energy-credit-expired/ IRS's consumer page and the statute use two different legal tests for the same December 2025 deadline. The gap decides whether your 2026 quote still holds. Wed, 19 Aug 2026 00:00:00 +0000 https://kilowattledger.docsanddeadlines.com/batteries/backup-vs-self-consumption-battery/ https://kilowattledger.docsanddeadlines.com/batteries/backup-vs-self-consumption-battery/ A backup battery earns nothing and a self-consumption battery protects nothing. Separate the two prices on your quote before you accept one payback number. Tue, 18 Aug 2026 00:00:00 +0000 https://kilowattledger.docsanddeadlines.com/envelope/insulation-before-solar-audit-order/ https://kilowattledger.docsanddeadlines.com/envelope/insulation-before-solar-audit-order/ Solar quotes skip the measures that pay back sooner. Here is the federal rule that ranks them, and how to test one against your own gas and electric rates. Tue, 18 Aug 2026 00:00:00 +0000 https://kilowattledger.docsanddeadlines.com/batteries/sizing-home-battery-load-profile/ https://kilowattledger.docsanddeadlines.com/batteries/sizing-home-battery-load-profile/ Pull your own interval data, then size a battery on it: why nameplate, usable kWh, depth of discharge and round-trip efficiency are four different numbers. Mon, 17 Aug 2026 00:00:00 +0000