A typical AC-coupled home battery system (such as GivEnergy 9.5kWh or Tesla Powerwall 3) costs between £3,500 and £6,500 installed, depending on battery capacity, brand, and installation complexity. We provide a fixed-price quote after reviewing your solar setup and consumption data.

For most UK households, a battery in the 5–10kWh usable capacity range is sufficient to store excess daytime solar generation and cover evening consumption. If you have a larger solar system or high overnight electricity use, a 10–15kWh system may be more appropriate. We size your battery based on your actual generation and consumption data.

Yes, but only if the battery is specifically configured for backup operation. Tesla Powerwall 3 and GivEnergy batteries both support backup power modes that automatically disconnect from the grid and continue powering your home during an outage. This feature must be enabled and wired correctly at installation — we set this up as part of commissioning if you request it.

A standalone battery installation (retrofitted to an existing solar system) typically takes 4–6 hours. If a new hybrid inverter is also required, the installation may take a full day. We cause minimal disruption to your home, and everything is left clean and tidy on completion.

In most cases, yes. AC-coupled batteries like Tesla Powerwall and GivEnergy's AC battery models are compatible with virtually any existing solar installation, regardless of the inverter brand. We check compatibility before specifying a battery and will advise if a different integration approach is needed.

Both are excellent products. The Tesla Powerwall 3 is a premium all-in-one solution with a strong brand and excellent app — it is slightly more expensive. GivEnergy offers very competitive pricing, a modular capacity range, and excellent integration with solar systems. We install and support both and will recommend the right product for your specific situation.

Yes — we install batteries in flats where the consumer unit and meter cupboard have adequate space. For leasehold flats, we work with managing agents to ensure compliance with building regulations. We have successfully installed batteries in apartments across Canary Wharf, Isle of Dogs, Stratford, and Poplar. A site visit will confirm feasibility for your specific flat.

On a time-of-use tariff like Octopus Agile or Economy 7, charging your battery overnight at cheap rates (around 7–9p/kWh) and discharging during peak hours (24–28p/kWh) can save £200–£400 per year. Savings increase significantly if you also have solar panels, as the battery stores free daytime generation for evening use.

No — domestic battery storage systems are classified as Permitted Development in England and do not require planning permission. External battery enclosures must be located appropriately relative to boundaries, but most residential installations face no planning barriers. We confirm this during your free consultation.

Leading lithium iron phosphate (LFP) batteries typically come with a 10-year warranty and are rated for 4,000–6,000 full charge cycles. At one cycle per day, this equates to 11–16 years of reliable operation. Actual lifespan depends on depth of discharge, ambient temperature, and charge/discharge rates. We install batteries in temperature-controlled locations where possible to maximise longevity.

Yes — GivEnergy and some Solax systems support modular battery expansion, allowing you to add additional battery units to increase total storage capacity. Tesla Powerwall supports up to three units in a single stack. We design your initial installation with future expansion in mind where possible.