I installed a GivEnergy battery last autumn after watching my electricity bills climb during the evening peak. The idea was simple: charge from my solar panels during the day, then use that stored energy after sunset instead of buying expensive grid electricity. I chose a 9.5kWh unit, paired with my existing inverter, and the installation took most of a day. The electrician was tidy, labelled everything clearly, and showed me how to read the app without making it feel like homework.

The biggest change has been between 4pm and 9pm. Before the battery, my cooker, heat pump, television, and dishwasher were all drawing from the grid when rates were highest. Now the battery usually reaches 100 percent by early afternoon, and it carries the house through dinner. On sunny days, my evening grid use has fallen to almost zero. My monthly bill is typically £35–£50 lower than before, although weather and tariff changes make comparisons imperfect. The saving feels most noticeable in winter, when every peak hour I avoid matters.

One evening, I noticed the battery sitting at 62% even though the sun had been out all afternoon. The app showed a warning about communication, and my first thought was that something expensive had failed. I checked the obvious things: the router was working, the inverter had power, and the battery isolator had not been switched off accidentally. After restarting the home network, the connection returned within a few minutes and charging resumed. It turned out to be a temporary Wi-Fi issue, not a battery fault. I now keep the inverter and battery on a small wired network adapter, which has been more reliable than Wi-Fi.

I check the state of charge before bed, but givenergy has made my solar panels useful after dark, especially during expensive peak hours.