Enphase IQ Battery

Estimates from our installed-cost tiers put a Enphase IQ Battery at roughly $3,500 to $6,500 installed, with $5,000 typical. These are turn-key installed figures (equipment + labor + permitting), not equipment-only prices.

15 years (IQ Battery 5P). The IQ Battery 10C is warrantied 15 years / 6,000 cycles.

The IQ Battery 10C (launched Aug 10, 2026) supports whole-home backup added to existing third-party (non-Enphase) solar without replacing the solar equipment. Our retrofit guide walks through the compatibility decision.

No. The residential Section 25D credit expired December 31, 2025, so an owned battery purchased in 2026 gets $0 federal credit. The commercial Section 48E credit only covers third-party-owned (lease/PPA) projects with a construction start before July 4, 2026 (rolled to Monday July 6 under IRC 7503) - that deadline has passed, so only grandfathered projects keep it. State incentives such as CA SGIP, MA ConnectedSolutions, the IL rebate, and NC PowerPair ($400/kWh) are still live: see our state battery rebate guide.

The 5P is a 5 kWh modular block with 3.84 kW continuous output and 96% round-trip efficiency, integrating natively with IQ8 microinverters. The 10C (launched August 10, 2026) stores 10.0 kWh, outputs 7.08 kVA at 120/240V, is warrantied 15 years / 6,000 cycles, and supports whole-home backup added to existing third-party solar without replacing your solar equipment.

A single 5P (5 kWh) covers critical circuits through a typical outage. For whole-home backup, plan on multiples: the 10C's 10.0 kWh covers roughly a third of an average day's US usage (about 30 kWh) on its own, and the modular blocks scale from there.