SolarEdge

Who is SolarEdge

SolarEdge Technologies was founded in 2006 by Guy Sella and a small team of engineers in Herzliya, Israel. The company built its name on power optimisers. These are small DC-DC devices fitted to each solar panel, maximising its output and reporting its performance individually. That approach, known as module-level power electronics, became SolarEdge’s core business and listed on the Nasdaq (SEDG) in March 2015.

For years, SolarEdge was a components supplier rather than a battery maker. It first worked with Tesla, letting its inverters manage Powerwall charging. It then moved to build its own storage technology, taking a major stake in Kokam, a South Korean lithium-ion cell maker, in 2018. That investment gave SolarEdge the cell-level expertise behind its current home battery range.

The shift into a true storage brand came with the Energy Hub Inverter, launched in 2020. It combined solar, battery and backup power management in one unit.

In November 2024, SolarEdge closed the utility-scale part of its storage business. The cuts affected around 500 jobs, mostly in South Korea cell manufacturing. However, the company was explicit that this did not touch residential battery sales. A US-made home battery followed just weeks later. In other words, SolarEdge pulled back from grid-scale cells while doubling down on the home market.

Shuki Nir became CEO in December 2024. Since then, SolarEdge has pushed further into residential storage rather than away from it, culminating in the Nexis system launched in Germany in March 2026.

The SolarEdge home battery range

SolarEdge currently sells its home battery under three related product lines, each tied to a specific inverter family. All of them use lithium iron phosphate (LFP) cells. Each carries a 10-year warranty, guaranteeing 70% capacity retention at year 10, though terms can vary slightly by region.

Home Battery 48V and 400V

The Home Battery 48V is SolarEdge’s low-voltage system, built from 4.85 kWh usable modules. Up to four modules stack in a single floor-standing tower for about 19.4 kWh. It pairs with SolarEdge’s Home Hub three-phase inverters and peaks at over 95% round-trip efficiency, according to the official datasheet.

By contrast, the Home Battery 400V is a higher-voltage system aimed mainly at North America, where it is manufactured domestically. Each unit holds about 10 kWh. Up to three can be stacked per inverter, for roughly 29 kWh of usable storage. This line was previously marketed as the Energy Bank before SolarEdge aligned the naming across markets.

Nexis: the next generation

Nexis is SolarEdge’s newest system, commercially launched in Germany in March 2026 after a preview the previous autumn. It pairs a redesigned three-phase hybrid inverter, rated up to 20 kW, with a modular battery. The “Simple-Click” design needs no field wiring between blocks.

Each Nexis battery block stores 4.9 kWh. Up to four stacks can run per inverter, for a maximum of about 78.4 kWh. However, SolarEdge was still rolling out full multi-stack availability through 2026 at launch. As a result, early installations may be limited to a single stack until supply catches up. Individual blocks and the internal DC-DC board can be replaced on site. That should make long-term servicing simpler than with a sealed battery tower.

Key technology behind SolarEdge

What sets SolarEdge apart from most whole-home battery brands is its optimiser heritage. SolarEdge fits a power optimiser to each individual solar panel, rather than relying only on a hybrid inverter to manage a whole string. Each optimiser tracks that panel’s own maximum power point and reports its output separately. As a result, one shaded or dirty panel no longer drags down an entire string. Meanwhile, this also means panel-level monitoring comes as standard, not as a paid extra.

That optimised DC layer carries straight through into the battery. The Home Battery and Nexis systems are DC-coupled. They charge directly from the optimised solar bus, rather than converting power to AC and back again. In practice, this cuts conversion losses and is part of why SolarEdge quotes round-trip efficiency figures above 94%.

Nexis adds a further layer called Battery Optimizer. It activates one battery block at a time at low power. It also balances the state of charge across blocks, rather than cycling every block together. Separately, SolarEdge’s Home Backup Interface lets the Energy Hub and Home Hub inverters power part of a home during an outage. In many cases, it can power the whole home too, without a separate generation panel or main panel upgrade.

Strengths and limitations

SolarEdge’s optimiser background gives it a genuinely different angle on whole-home storage. That sets it apart from brands like GivEnergy, Sunsynk, Fox ESS and Alpha ESS. That said, tying the battery so closely to its own inverter ecosystem brings trade-offs too.

Where SolarEdge fits the market

SolarEdge makes most sense for households that already have, or are planning, a SolarEdge-optimised solar array. Pairing the battery with the same optimisers and monitoring keeps everything under one app and one support line. Some homeowners prefer that over mixing brands.

It also suits roofs with shading, multiple orientations, or mixed panel ages. Panel-level optimisation handles that kind of mismatch better than a simple string setup. In some markets, such as parts of the United States and Germany, domestic manufacturing incentives also apply to the 400V and Nexis lines.

By contrast, a household starting from scratch may prefer a more open hybrid system. That especially applies if there is no strong preference for optimisers, or a wish to mix inverter and battery brands freely later. Availability of the newest Nexis hardware still varies by country. So, it is worth checking with a local installer what is actually on offer right now. Don’t assume the whole range is sold everywhere.

As with any brand, specs, pricing and availability come from the manufacturer and change over time. Always confirm current details with an accredited installer before buying. To see how a SolarEdge-sized system compares with other capacities, try our battery capacity guide. Or run your own numbers through the home battery calculator.

Common questions about SolarEdge