For homeowners who value transparency, quality and safety

Most solar systems hide their problems. Enphase shows them to you.

AC-coupled and built from microinverters — the retrofit battery that works with the solar you already have.

Premium tier · Small and medium units, stackable · Matched across 342 US cities · Last reviewed 2026-09-05

Find Enphase installers in your state

Is a Enphase right for your house?

Enphase is one of the more expensive options per usable kilowatt-hour in this comparison, and that is a fair criticism if payback is your only measure. It earns its place in three specific situations: retrofitting onto existing solar without replacing your inverter, homes already running Enphase microinverters, and households that want to start small and add capacity in steps. Outside those cases, other batteries do the same job for less money and less wall space. You are buying an architecture, not a value proposition, and it is worth knowing which of those you actually want.

The decision Enphase forces is about wall space and growth, not about capacity. Because storage arrives in smaller units rather than one large box, you can size precisely — and every unit needs its own footprint on a wall. That is liberating if you want to start with a modest system and expand as budget allows, and constraining if you want a lot of storage in one place. Work out where unit three and unit four would physically go before you buy unit one.

Where Enphase actually sits in the US market

The second-largest US residential battery brand by installed share, built on the country’s biggest microinverter base.

  • Market tier — Premium tier.
  • Capacity — Small and medium units, stackable.
  • Most cross-shopped against — Tesla Powerwall 3.

Enphase has the largest microinverter installed base in the US, so a very large number of American solar homes are already inside its ecosystem before they think about storage. The installer base understands the architecture even where crews have fitted fewer of the batteries. The retrofit case is the one that genuinely sets it apart: because it is AC-coupled, it is the straightforward answer for homes that already have solar and do not want to replace a working inverter to add storage.

The trade-offs you accept with Enphase

  • Higher cost per usable kilowatt-hour. If you are judging on payback alone, this brand will not win, and no amount of engineering argument changes that arithmetic.
  • Wall space is a real constraint. Capacity arrives in units and each needs its own mounting position, so a large system takes noticeably more wall than a single tower.
  • Backup is a separate line item. The IQ System Controller is what makes backup work; a quote without it is a self-consumption system.
  • The retrofit advantage only counts if you are retrofitting. On a new solar-and-battery install bought together, the main reason to pay the premium largely disappears.
  • A narrower charging temperature range than discharging. Siting matters more in hot and cold climates, which is part of why a garage is often the sensible default.
  • Redundancy is real but rarely decisive. Several microinverters per unit means a failure degrades output instead of stopping it — genuinely different engineering, though most households never test it.

How Enphase compares with the rest of the shortlist

These are the other brands Shortlist Solar matches installers for. The differences are structural rather than a ranking — the right answer depends on your roof, your service panel and what you want the battery to do.

  • Tesla Powerwall (premium) — One box, one app — storage with the solar inverter built in.
  • FranklinWH (premium) — A whole-home energy manager first, a battery second — and it works with the solar you already have.
  • SolarEdge (premium) — The battery for a SolarEdge system — DC-coupled, quiet, and pointless without the matching inverter.
  • Sigenergy (mid-market) — Five things in one stack — solar inverter, battery, EV DC charger and the controller that runs them.

Where you can get an Enphase installed

Shortlist Solar matches installers in 342 cities across 46 states. Pick your state for the local list, or go straight to the full city directory.

In one of the biggest cities? Go straight to the Enphase page for your metro area:

All Enphase battery installer locations, city by city

Enphase questions, answered for the US

Is Enphase worth the extra money?
In three situations, yes. If you are adding a battery to solar you already have and do not want to replace the inverter, it is one of the two cleanest paths available. If your panels already run on Enphase microinverters, it keeps one ecosystem and one app. If you want to start small and grow, it sizes in finer steps than most. If none of those describe you, you are paying a premium for flexibility you will not use.
Can I really keep my existing solar?
Yes, and this is the main argument for the brand. Because the battery is AC-coupled it sits alongside solar of any make without replacing your inverter. Most competing batteries are DC-coupled and need their own matching inverter, which is exactly what makes those retrofits expensive. Ask any installer quoting an alternative what happens to your current inverter, and the difference becomes obvious quickly.
Does this site sell Enphase batteries?
No. We do not stock hardware or take a margin on your system, so we gain nothing from recommending one brand over another. We match you with 2-3 vetted installers — typically 2+ years in business, with a track record of decent reviews — prioritizing real experience with the system you are asking about. You deal with them directly and the service costs homeowners nothing.
How much wall space will I actually need?
More than you probably expect, and it is the practical constraint most people underestimate. Each unit needs its own mounting position with clearances, so a system of several units occupies a meaningful stretch of garage wall. Ask your installer to mark out the actual positions during the site visit rather than agreeing to a unit count on paper.
Is Enphase a good choice for a brand-new solar and battery install?
It can be, but the case is weaker than for a retrofit — unless you are choosing Enphase microinverters for the panels anyway, in which case staying in one ecosystem is a real convenience. If you are not, the AC-coupled flexibility that justifies the premium is not doing much for you. Price a DC-coupled system alongside it before committing.
What happens if one part of the system fails?
Output drops rather than stopping. Each unit carries several grid-forming microinverters instead of one central inverter, so losing one costs a fraction of that unit’s power rather than the whole battery. It is a genuine engineering difference from every other battery on this list, and the honest framing is that it is insurance you hope never to notice rather than a feature you use.
How many installers will contact me?
Between two and three. Your details are never sold into a call-center pool. Keeping the number small means each installer has a real chance at the job, which is what makes it worth their while to plan the mounting positions properly — and with this brand, that planning is most of the install quality.
Does the battery work with EV charging and the rest of the system?
Yes, and single-app control across solar, storage and EV charging is one of the genuine attractions of staying inside this ecosystem. The practical caveat is the same one that governs every decision with this brand: each piece of hardware needs its own space and its own line on the quote. Ask your installer to lay out the full end-state on paper before you commit to the first stage.

Deeper reading on Enphase

Sources and last review

Brand research compiled by the Shortlist Solar team and reviewed against the sources below. We hold no stock and take no margin on your system, so nothing here is written to move a particular box.