Enphase IQ Battery Installation

The modular battery that natively pairs with Enphase microinverter solar. Industry-best 15-year warranty. ESS-eligible. Connecticut-licensed installer.

Enphase IQ Battery 5P home battery
Enphase IQ Battery 5P

Modular battery with the industry's longest warranty

IQ Battery 5P is Enphase's all-in-one AC-coupled battery: 5 kWh of LFP storage per unit with six embedded IQ8D-BAT microinverters built right in. Start with one or two and stack more as your loads grow.

For homes already running Enphase microinverter solar, the IQ Battery is the natural extension. Same Enphase app monitors PV, battery, and consumption together. Backed by a 15-year limited warranty.

Why Enphase IQ Battery

Modular by design

5 kWh per unit. Start with one or two batteries and add more later. Each module is independently warrantied and replaceable - no stack-wide forklift upgrade.

Native Enphase integration

Talks to your existing Enphase microinverters and the Enphase app out of the box. One monitoring surface for solar + battery + EV charging.

Best-in-class warranty

15 years or 6,000 cycles - the longest residential battery warranty on the market. LFP chemistry runs cooler and ages slower than older NMC batteries.

ESS-eligible

Approved equipment under Connecticut's Energy Storage Solutions grid-services program. Upfront incentive plus annual performance payments.

Typical Connecticut configurations

1 battery - 5 kWh

Essential loads only (fridge, internet, lights, key outlets). 6-12 hours autonomy.

$9,000-$12,000

2 batteries - 10 kWh

Essential loads with longer outage runtime. 12-24 hours autonomy.

$16,000-$22,000

3 batteries + IQ System Controller - 15 kWh

Whole-home backup including central A/C cycling. Multi-day autonomy with solar recharge.

$24,000-$34,000

4-5 batteries

Off-grid-ready resilience for rural CT homes with frequent or extended outages.

$32,000-$48,000

Pricing is installed in Connecticut, before incentives. The Connecticut Energy Storage Solutions (ESS) incentive can lower the upfront cost; the amount depends on battery size and current program terms.

Enphase IQ Battery FAQs

Common questions from Connecticut homeowners evaluating Enphase batteries.

How big is an Enphase IQ Battery and how many do I need?
Enphase IQ Battery 5P is a 5 kWh modular battery - most CT homes use two or three for typical essential-loads backup, and three to five for whole-home backup including central A/C. The modular design lets you start with one or two and add more later without replacing the existing units. We size the system based on your specific home loads at the estimate.
Does Enphase IQ Battery require Enphase microinverters?
For new installs, yes - IQ Battery talks to the Enphase IQ Combiner and IQ System Controller, both of which integrate cleanest with an Enphase microinverter array. For existing non-Enphase solar systems, AC-coupled retrofits are possible but cost more. We assess your system at the site visit and recommend the most cost-effective path.
What does Enphase IQ Battery cost installed in Connecticut?
A single IQ Battery 5P (5 kWh) typically runs $9,000 to $12,000 installed. A two-battery setup (10 kWh) is $16,000 to $22,000. Whole-home with three batteries plus the IQ System Controller is $24,000 to $34,000. The CT Energy Storage Solutions (ESS) incentive can lower the upfront cost, depending on battery size and current program terms.
Can I enroll an Enphase battery in the Connecticut ESS program?
Yes. The IQ Battery is approved equipment under Connecticut's Energy Storage Solutions (ESS) program through Eversource and United Illuminating. ESS provides an upfront incentive at install plus ongoing performance payments for letting the utility briefly dispatch your battery during peak grid events. We file the ESS enrollment paperwork with the install.
How long does an Enphase battery install take?
On-site work is typically 1 day for a single battery, 1-2 days for two or three batteries plus the IQ System Controller. Permitting, utility paperwork (Eversource or United Illuminating), and ESS enrollment add 4 to 8 weeks. We project-manage the whole timeline.
How long does an Enphase battery last?
The IQ Battery 5P carries Enphase's 15-year / 6,000-cycle warranty - the longest in the residential battery market. Real-world life is typically 12-20 years depending on cycling. The modular design means you can add a new battery alongside aging ones rather than replacing the whole stack.