The Basics of Solar

To make Solar work for you home or business you need Solar Panels, an Inverter and (optional) Battery Storage.

Here's how all of that works together:

☀️ Solar Panels

• Capture sunlight and generate DC electricity (direct current)

• Raw electricity that can't be used directly in your home as-is

• Output varies with light levels throughout the day

⚡ Inverter

• The "brain" of the system

• Converts DC electricity from the panels into AC electricity (alternating current) — which is what your home appliances run on

• Also manages the flow of electricity between panels, battery, home, and grid

• Modern hybrid inverters handle everything in one unit

🔋 Battery

• Stores excess electricity generated during the day that your home isn't using in that moment

• At night (or on cloudy days) when panels aren't producing enough, the battery discharges to power your home

• Without a battery, unused daytime electricity goes straight to the grid

Yes! Solar panels work with daylight, not just direct sunshine. Ireland gets plenty of diffused light even on overcast days. While output is lower than on a sunny day, modern panels are highly efficient and still generate meaningful electricity year-round.

Good question

You've taken the step of installing solar panels — or you're seriously thinking about it. Now comes the next question almost every homeowner asks: do I need a battery too? The honest answer is: it depends. But for many Irish households, the answer is a resounding yes. Here's why.

What Does a Solar Battery Actually Do?

Solar panels generate electricity during daylight hours — typically between 9am and 4pm. But most Irish households use the most electricity in the evenings, when panels produce little or nothing. Without a battery, any excess electricity your panels generate during the day gets exported to the grid. With a battery, that surplus energy is stored and ready to use when you need it most.

When a Battery Makes a Lot of Sense

A battery is likely a great investment for you if:

•       You're out of the house during the day — if nobody is home while the panels are generating, most of that energy would otherwise go straight to the grid for a low return.

•       You use a lot of electricity in the evenings — cooking, charging an EV, running appliances after work.

•       You want to reduce your reliance on the grid — and protect yourself from rising electricity prices.

•       You have a larger solar system — more panels means more surplus to store.

•       You're interested in backup power — some batteries can keep your home running during a grid outage.

When a Battery is Less Essential

A battery may be less of a priority if someone is at home throughout the day using electricity as it's generated, or if you're working with a tighter budget. In that case, solar panels alone still deliver strong returns and you can always add a battery later.

To make Solar work for your home or business you need Solar Panels, an Inverter and a (optional) battery storage.

See the Solar Guide item "How does it all work?" for more detail.