Before you go solar, or even after, knowing where your electricity actually goes is one of the most useful things you can do. Once you know what’s eating through your power, you can shift your habits and get way more out of your panels.
Here’s a practical breakdown of the biggest electricity consumers in a typical UK home, and how solar can help with each one.
Heating and Hot Water
If you heat your home or water with electricity (direct electric boiler, storage heaters, or an immersion heater) this will be your single biggest electricity cost. Not even close. Electric heating can easily account for 50–60% of a household’s total electricity use during winter.
We see this a lot. People know their bills are high but don’t realise just how much the heating is responsible for.
Solar panels pair really well with hot water systems. An immersion diverter device can automatically redirect surplus solar electricity to your hot water tank during the day, heating your water for free. It’s one of the most cost-effective additions you can make to a solar installation, honestly.
The Big-Draw Appliances
Electric showers are absolute power hogs. They pull 8–10.5kW while running. A 10-minute shower uses around 1.5 kWh, the equivalent of leaving 15 lightbulbs on for an hour. Think about that next time someone in your house takes a 20-minute one.
Tumble dryers, washing machines, and dishwashers are big consumers too. A tumble dryer uses roughly 4–5 kWh per cycle; a washing machine around 1–2 kWh. The important thing here is that these appliances can be scheduled to run during the middle of the day when your solar panels are generating at their peak.
A simple timer or a smart plug does the trick. Shift your laundry and dishwasher cycles to match peak solar generation and they run on free electricity rather than pulling from the grid.
The Stuff That Never Switches Off
Your fridge and freezer run 24 hours a day, 7 days a week. They account for roughly 8–15% of a typical electricity bill. You can’t control when they run, but a solar and battery combination can make sure some of their energy comes from stored solar generation rather than the grid.
Standby power adds up too. Televisions, computers, games consoles, phone chargers, all of it just sat there quietly drawing power. Often several hundred kWh per year across a full household. Switching appliances off at the socket rather than leaving them on standby is an easy, no-cost saving.
Electric Vehicles
This one’s growing fast. EV charging is one of the fastest-growing electricity costs in UK homes. Charging an average electric vehicle adds roughly 3,000–4,000 kWh to your annual electricity use. That’s a big number.
If you charge at home during the day, solar panels can offset a large portion of that cost. A solar and EV charger combination is increasingly popular, and smart chargers can be set to prioritise solar generation. You charge your car on sunshine whenever possible.
How Solar Changes the Picture
The real benefit of solar panels isn’t just that they generate electricity. It’s that they generate it at exactly the time of day when many of your highest-draw appliances can be running. Run the dishwasher at noon rather than midnight. Put the washing on while the sun’s out. Small shifts like that dramatically increase the proportion of your electricity that comes directly from your panels.
Add a battery and a smart monitoring system and you’ve got a home that works actively to minimise your grid reliance and your bills.
We can help you design a solar system around your actual usage patterns. Give us a shout at amprenewables.co.uk for a free assessment.