Every guide, grouped by the decision you’re making
Policy, costs and payback explainers behind the calculators — 12 guides, each with dated sources. Pick the decision you’re facing and start there.
Battery economics
Payback, incentives and installed costs for home batteries.
Battery Tax Credit 2026
The 30% federal credit ended. What homeowners can still claim — and what to verify before buying.
Read the guide →Is a Home Battery Worth It?
Honest payback math for 2026: 7–15 years typical, 6–9 in California, and when it never pays back.
Read the guide →Home Battery Costs 2026
Installed prices by size and brand, what moves the quote, and the red flags to watch for.
Read the guide →Backup power
Generators, batteries and portable stations for outages.
Generator vs Battery vs Portable
Which backup power fits your outage profile — upfront cost, runtime, safety and 10-year TCO.
Read the guide →Whole-House Generator Cost
What $8k–$16k installed really includes, plus the fuel and maintenance bill every year.
Read the guide →Battery Outage Runtime
How long a 13.5 kWh battery runs essentials, half a house or A/C — with the real math.
Read the guide →Solar + storage
How batteries change the math for existing solar owners.
Sizing
How many kWh you actually need — and why nameplate size misleads.
Heating & electrification
Heat pumps vs furnaces, fuel costs and cold-climate performance.