Independent reviews, buying guides, and savings calculators for home energy technology
Honest cost analysis for EVs, solar, heat pumps, and home batteries. No sponsored placements.
The Greener Electron is written by Nic, an independent researcher covering the technology that lowers energy bills. Every recommendation comes from manufacturer data and published specs. No sponsored placements, no pay-to-play rankings.
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New to home energy tech? These five in-depth guides cover the biggest decisions, with honest cost analysis and no sponsored placements.
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A professional energy audit finds in a few hours what months of guessing won't — air leaks, duct losses, and safety hazards. Here's what the tests reveal, what it costs in 2026, and how to find a qualified auditor.
Starting January 1, 2027, Californians can plug a certified solar kit of up to 1,200 watts into a standard outlet — no utility permission needed. Here's what the law allows, the honest savings math, and what to look for in a kit.
A smart thermostat typically saves 8–15% on heating and cooling — here are the honest picks for 2026, with real savings math, rebates, and compatibility advice.
Updated October 2026: We verified the models, specs, prices, tax rules, and rebate examples below against manufacturer pages and 2026 sources. Prices, rebates, and installation costs
Updated October 2026: The 30% federal residential solar credit ended on December 31, 2025, and is not available for systems you buy in 2026. Prices, loan
Updated October 2026: This guide reflects 2026 pricing and models. Battery prices and promotions change often, so before you buy, verify the current price and specifications