Solar Battery Storage Installation Chester, Deeside & North Wales

As a guide, an installed home battery usually costs from around £4,000 for a smaller unit to £8,000 or more for a larger one. The final price depends on the battery capacity, whether you need a new or hybrid inverter, and where the battery can be safely sited. Fitting a battery at the same time as new solar panels is normally cheaper than adding one later. We give you a fixed written price after a free survey.

No. Residential battery storage is zero rated for VAT until 31 March 2027. That covers a battery installed with new solar panels, a battery added to existing solar, and a standalone battery with no solar at all, as long as it is installed by a qualified installer.

They are usually worth it if you export a lot of your solar during the day and use most of your electricity in the evening, or if you are on a time-of-use tariff with a cheap overnight rate. They are less worthwhile if you are at home using power all day, or if the battery would be oversized for your usage. We will tell you honestly which group you fall into before you spend anything.

It depends on how much electricity you use between late afternoon and the next morning, not on the size of your roof. We look at your bills or smart meter data and your solar generation, then size the battery so it fills up on a typical day and empties overnight. A battery that never fully charges or never fully empties is money that will not pay back.

Yes. A battery can be added to almost any existing solar PV system, whoever installed it. Depending on your current inverter, we either fit an AC-coupled battery alongside it or replace it with a hybrid inverter that runs both the panels and the battery.

Yes. A battery can charge overnight on a cheap off-peak tariff and power your home during the more expensive daytime and evening hours. If you add solar later, the same battery will store your solar generation too.

Only if it is designed for it. Most batteries switch off during a power cut for safety unless they have a backup function, often called EPS, and the backed-up circuits are wired separately. If keeping lights, a fridge or internet running matters to you, tell us at the survey and we will specify a system with backup.

Most home batteries come with a warranty of around 10 years or a set number of charge cycles. Lithium batteries lose capacity slowly over time rather than failing suddenly, so a battery usually still holds a useful amount of its original capacity when the warranty ends.

We follow the PAS 63100 safety guidance for home batteries. Where possible the battery goes outside the living space, for example in a garage, outbuilding or on an outside wall. If it has to go indoors, it is kept away from bedrooms and escape routes such as hallways and stairs, with fire detection where required.

You will export less, so your export payments go down. That is expected, because every unit you store and use yourself replaces electricity you would otherwise buy at full price. A properly installed and certified system keeps your solar eligible for the Smart Export Guarantee.

Yes. MARA Electrical is MCS certified and NICEIC approved, based in Queensferry on Deeside. Every battery installation is tested and certified to BS 7671, and we handle the DNO notification for you.