Best Home Battery 2026: Powerwall 3 vs Enphase IQ 5P vs FranklinWH vs
The best home battery in 2026: Tesla Powerwall 3 (13.5 kWh, ~$12.5–16k), Enphase IQ 5P (modular, 15-yr warranty), FranklinWH aPower 2 (best value), LG RESU Prime. Specs, installed costs, and which battery fits your solar.
By The PVFig Editorial Team · 2026-08-10 · reviewed against EIA, NREL and DSIRE sources
The 2026 field, compared
Tesla Powerwall 3 leads for whole-home backup: 13.5 kWh, 11.5 kW continuous output (runs central AC and EV charging), built-in inverter, ~$12,500–16,200 installed (solarscout/getwattwise 2026), 10-yr warranty. Enphase IQ 5P is the most flexible: 5 kWh per unit, 3.84 kW, ~$6,000–9,000/unit, industry-best 15-yr warranty, works with any solar system. FranklinWH aPower 2 is the value pick: 15 kWh, 10 kW, ~$11,000–20,000, ~$733–1,000/kWh — the lowest cost per kWh of the premium options. LG RESU Prime 16H: 16 kWh, 7 kW, ~$10,000–15,000, safe and widely supported.
What changed in 2026: no federal credit
The residential Clean Energy Credit (Section 25D) expired Dec 31 2025 — batteries bought outright in 2026 get no federal credit. The commercial 48E credit still applies to lease/PPA installations (safe harbor for projects beginning construction by July 4 2026), which installers may pass through as lower payments. Overall installed cost in 2026: roughly $10,000–20,000 per unit, or $700–1,300 per kWh (equipment alone $400–850/kWh).
Which battery fits you
Backup only: one Enphase IQ 5P ($6,000–12,000, 15-yr warranty). Whole-home backup: Powerwall 3. Time-of-use savings with weak net metering: FranklinWH (stores cheap solar, avoids peak rates). Expandability: Enphase (stack to 20 kWh). Battery economics are strongest where export credits are low (net billing states like CA NEM 3.0) or where time-of-use spreads exceed ~15¢/kWh — a battery can shift $9–15/day of energy.
FAQ
What is the best home battery in 2026?
Tesla Powerwall 3 for whole-home backup (13.5 kWh, 11.5 kW, built-in inverter), Enphase IQ 5P for flexibility and warranty, FranklinWH aPower 2 for best value per kWh (solarscout/13.energy 2026).
How much does a home battery cost installed in 2026?
$10,000–$20,000 per unit, or about $700–1,300 per kWh installed. No federal 25D credit applies to 2026 purchases; state incentives (SGIP, ConnectedSolutions) still help.
Is a home battery worth it without net metering?
Often yes — in net billing states your exports earn only 3–6¢/kWh while you pay 15–30¢ at night, so a battery that shifts your own solar to evening can pay back in 5–7 years (CA/MA time-of-use markets).
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Sources
- U.S. EIA — electricity rates by state, eia.gov/electricity/monthly
- NREL PVWatts v8 — solar production by location, pvwatts.nrel.gov
- DSIRE — state incentives and net metering, dsireusa.org
- See how every figure on this page is calculated — PVFig methodology.
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