Enphase IQ Battery 5P Price & Review (2026)
5 kWh · 3.84 kW · Lithium Iron Phosphate (LFP) · 15-year warranty · 4.6/5
The Enphase IQ Battery 5P costs $6,000–$8,000 installed in 2026, or about $4,900 after the 30% federal tax credit.
- Installed price: $6,000–$8,000 (unit only: $4,500–$5,500).
- After the 30% federal Investment Tax Credit, the net cost is about $4,900.
- Stores 5 kWh usable and delivers 3.84 kW continuous (7.68 kW peak).
- Backed by a 15-year warranty (6,000 cycles or 15 years); fully modular — stack in 5 kwh increments.
How much does the Enphase IQ Battery 5P cost?
The Enphase IQ Battery 5P costs $6,000–$8,000 installed in 2026. The battery unit alone runs $4,500–$5,500; the rest covers labor, electrical work, and permitting. The 30% federal Investment Tax Credit applies when the battery is charged by solar, bringing the net cost to about $4,900.
The Enphase IQ Battery 5P is the most modular home battery available. Each unit stores 5 kWh and contains six embedded microinverters, so you can size a system precisely and expand it later. Its 15-year warranty is the longest in the residential market, and the all-in-one microinverter design keeps single points of failure low.
Enphase IQ Battery 5P specs
| Usable capacity | 5 kWh |
|---|---|
| Continuous power | 3.84 kW |
| Peak power | 7.68 kW |
| Chemistry | Lithium Iron Phosphate (LFP) |
| Round-trip efficiency | 90% |
| Warranty | 15 years (6,000 cycles or 15 years) |
| Scalability | Fully modular — stack in 5 kWh increments |
| Integrated inverter | Yes |
| Unit price (equipment) | $4,500–$5,500 |
| Installed price | $6,000–$8,000 |
Pros
- Industry-leading 15-year warranty
- Highly modular — size in small 5 kWh steps
- Built-in microinverters add redundancy
Cons
- Lower per-unit power; multiple units needed for whole-home backup
- Higher cost per kWh at small sizes
Is the Enphase IQ Battery 5P worth it?
Best for: Homeowners who want to start small and expand storage over time. With a 90% round-trip efficiency and a 15-year warranty, the Enphase IQ Battery 5P suits homeowners who want flexible, modular storage and plan to pair the battery with solar to claim the 30% tax credit.
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Enphase IQ Battery 5P FAQ
The Enphase IQ Battery 5P costs $6,000–$8,000 fully installed in 2026. The battery unit alone is $4,500–$5,500. After the 30% federal tax credit, the net cost is about $4,900.
Yes. The 30% federal Investment Tax Credit (ITC) applies to the Enphase IQ Battery 5P when it is charged by on-site solar, and standalone storage also qualifies under current rules. On a typical installed price that is roughly $2,100 back.
The Enphase IQ Battery 5P stores 5 kWh of usable energy and delivers 3.84 kW of continuous power (7.68 kW peak). Fully modular — stack in 5 kWh increments.
The Enphase IQ Battery 5P carries a 15-year warranty (6,000 cycles or 15 years). Its Lithium Iron Phosphate (LFP) chemistry is rated for a 90% round-trip efficiency.
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