Roath is one of Cardiff's most characterful neighbourhoods, filled with Victorian and Edwardian terraced houses that are increasingly adding solar panels. But without battery storage, most Roath solar homes export over 60% of their daytime generation to the grid — only to buy it back at peak evening rates. A home battery captures that surplus energy and releases it after dark, transforming your solar system from a daytime-only generator into a round-the-clock power source.

Our Cardiff team has installed battery storage systems in dozens of Roath properties — from compact 5kWh units tucked into under-stair cupboards to larger 10kWh systems in cellars and garages. We understand the space constraints common in Roath terraces and have creative solutions for every property type. Even if you don't have solar yet, a battery charged on cheap overnight tariffs like Octopus Go can still save £200–£400 per year.

For Roath homeowners with existing solar panels, adding a battery is one of the best investments you can make. A typical 4kW solar system in Roath generates 3,400–3,700 kWh per year. Without storage, you use about 30% yourself. With a 10kWh battery, that jumps to 70–80%, adding £350–£500 per year to your savings. Popular choices in Roath include the GivEnergy 9.5kWh and Tesla Powerwall 13.5kWh.