Time-of-use tariffs charge different rates depending on when you use electricity. Combined with solar panels and battery storage, Portsmouth homeowners can slash bills by up to 90%.
Unlike flat-rate tariffs where you pay the same price 24/7, time-of-use (ToU) tariffs vary the price of electricity throughout the day. Energy is cheapest when demand is low (overnight) and most expensive during peak hours (mornings and evenings).
12:00am – 5:30am
5:30am – 9:30am
9:30am – 4:00pm
4:00pm – 9:00pm
9:00pm – 12:00am
Here's how Portsmouth homeowners combine solar, battery storage, and time-of-use tariffs to dramatically reduce energy costs.
Charge your battery at 7p/kWh overnight and use it during 40p/kWh peak hours. The savings stack up fast.
Buy electricity when it's cheapest and use or sell it when it's most expensive. Your battery becomes a money-making asset.
Generate free electricity during the day, store the surplus, and avoid every peak-rate charge.
Export surplus solar to the grid during peak hours when export rates are highest. Earn more per kWh.
These are the UK's most popular smart tariffs that work brilliantly with solar panels and battery storage.
Half-hourly pricing that follows wholesale rates. Prices can go negative — get paid to use electricity!
Designed for solar + battery homes. Higher export rates during peak, cheap imports overnight.
6-hour off-peak window at ~7p/kWh. Perfect for EV and battery charging overnight.
Variable rate with smart meter integration. Competitive standard rates for solar homes.
Your battery charges from the grid at the cheapest off-peak rate (~7p/kWh). Your EV charges too.
Electricity jumps to ~35p/kWh but you're running off your battery. Zero grid usage, zero peak charges.
Your panels generate free electricity. Surplus charges your battery or exports to the grid via SEG for money.
The most expensive period (~40p/kWh). Your fully charged battery powers your home. You pay nothing.
Rates drop again. Any remaining battery usage or light grid usage at low cost. The cycle resets.
We'll design a solar + battery system optimised for time-of-use tariffs. Free survey, no obligation.