Solar PV Inverter Buyer’s Guide 2020: 14 manufacturers tell us what’s new and what’s next – Solar Builder

# Solar Inverter Shopping in 2020: What Homeowners Really Need to Know

**The most expensive mistake in a solar installation usually isn’t the panels. It’s choosing an inverter that can’t keep up with the way you actually use electricity.**

That sounds unfair, especially when solar quotes make the panels look like the star of the show. But the inverter is the part quietly converting your panels’ DC electricity into usable household AC power, managing the grid connection, and, in a hybrid system, deciding when to charge or discharge your battery. If it’s undersized, poorly matched, or impossible to expand later, your “future-proof” solar setup can become a very expensive limitation.

And yes, the shiny black panels on the roof may get all the attention. The inverter is doing the less glamorous work.

## What changed in the 2020 inverter market?

The big shift around 2020 was simple: homeowners were no longer buying solar only to reduce daytime electricity bills. More people wanted backup power, battery storage, smarter energy management, and some protection from unreliable grids.

That’s why manufacturers such as SolarEdge, SMA, Fronius, Enphase, Huawei, Sungrow, GoodWe, Growatt, Solis, Schneider Electric, Victron Energy, Delta, OutBack Power, and Tigo were pushing harder into hybrid systems and storage-ready equipment. The details varied, but the direction was clear. Inverters were becoming energy managers rather than simple power converters.

A standard grid-tied inverter sends your solar power into the home and exports the surplus to the grid. A hybrid inverter adds battery control to that job. It can store excess solar during the day, then use it in the evening when electricity prices are higher. Some models can also provide backup power during an outage.

Here’s the part many sales brochures gloss over: a grid-tied solar system normally shuts down when the grid fails. That’s a safety requirement, not a fault. If you want the fridge, lights, internet router, or medical equipment to keep running, you need an inverter and battery system designed for backup operation, plus the right backup wiring. Simply adding a battery to any old solar setup won’t always do it.

## Are hybrid inverters worth paying extra for?

Sometimes. Not automatically.

A hybrid inverter makes the most sense if your household uses a lot of electricity after sunset, your utility pays very little for exported solar, or your local grid is prone to outages. It can also be a sensible choice if you’re installing batteries soon but don’t want to replace the main inverter later.

For a household that runs air conditioning, electric heating, pool equipment, or an electric vehicle in the evening, storing daytime solar can reduce expensive peak-rate imports. In the UK, time-of-use tariffs make this calculation especially interesting. In Australia, low feed-in tariffs have pushed many homeowners toward batteries. In parts of the US, the value depends heavily on net metering rules, demand charges, and whether backup power matters to you.

But batteries are still expensive, and they don’t last forever. Their usable capacity gradually falls, while inverter warranties, battery warranties, installation costs, and software requirements can vary widely. A system that looks profitable on a spreadsheet may take much longer to pay for itself once you include replacement costs and financing.

The honest approach is to calculate your evening electricity use first. If you only use a small amount after dark, a large battery may spend much of its life doing very little. That isn’t clever energy management. It’s expensive storage sitting in the garage.

## What should you check before buying?

Start with compatibility, not brand reputation. Ask which batteries the inverter supports, whether the system can operate during a blackout, and how much power it can deliver continuously from the battery. A battery may hold plenty of energy but still be unable to run a kettle, heat pump, or air conditioner because the inverter’s output is too low.

Also check the backup circuit. Many systems won’t power the entire house unless the installation includes a suitably rated backup gateway or transfer switch. Some only support selected loads. That may be perfectly fine, but you need to know whether “backup power” means your whole home or just the refrigerator and a few lights.

Then look at the boring details that become very important later: warranty length, local service support, monitoring fees, replacement availability, noise, shade performance, and whether the installer has worked with that exact model. A cheap inverter from an unfamiliar supplier can become a headache if it fails outside your region’s support network.

SolarEdge’s panel-level optimisation, Enphase’s modular microinverter approach, SMA and Fronius’ established grid equipment, and the growing range of hybrid products from GoodWe, Sungrow, Huawei, Growatt, and others all solve slightly different problems. There isn’t one universal winner. A shaded roof may favour module-level electronics, while a simple unshaded roof may be better served by a conventional string inverter with a sensible battery plan.

Before signing anything, ask the installer to show you the expected annual generation, your estimated self-consumption, battery usable capacity, backup output, and the total cost over ten years. If they can’t explain those figures without hiding behind technical language, get another quote. The best inverter is the one that matches your roof, tariff, outage risk, and evening habits, not the one with the longest feature list.

And if you’re unsure, install the solar system with a clear battery-ready path rather than buying the biggest battery package on day one. Keep the money in your pocket until your real energy data shows you actually need it.

KEYWORDS: hybrid inverter, solar battery

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