Straight answers about EPS battery systems, runtime, protected circuits, generators versus batteries, and what backup power actually means for homes across Central Scotland.
Systems with EPS switch to battery power automatically, typically within around 20 milliseconds. That is fast enough that most appliances will not even notice the grid has gone down. Your lights, fridge, and internet can stay on without you having to do anything.
It depends on the system. Tesla Powerwall 3 is designed for whole-home backup as standard. Other systems, such as GivEnergy with EPS, can be configured either for whole-home backup or for a dedicated critical-circuits board that protects only the essentials.
A typical 13.5kWh battery such as a Tesla Powerwall 3 can run essential circuits for around 12-24 hours depending on usage. If you also have solar panels, the battery can recharge during daylight, which can extend backup significantly during longer outages.
Usually yes for gas and oil systems, because the battery can keep boiler controls, pumps, and ignition powered. Electric heating can also be supported, but it uses much more power and will reduce runtime more quickly.
In many cases, yes. Some existing GivEnergy systems can be upgraded with EPS hardware, and existing Powerwall installations may already have backup capability depending on how they were configured. We need to assess the current system to confirm what is possible.
A new battery system with EPS typically starts from around £4,000-£6,000 for a smaller standard setup, with larger premium systems costing more. If you already have a compatible battery, adding backup functionality can cost significantly less than a full new install.
Yes, and for most homes it is the better option. A battery is silent, starts automatically in milliseconds, needs no fuel, produces no emissions, and is useful every day for solar storage or smart tariff savings. A generator is noisy, fuel-dependent, and usually manual.
Need backup power advice for your property?
Call us on 07990 504549 or book a free survey and we will tell you whether whole-home backup or critical circuits make more sense.