Best Energy Deals in Portsmouth 2026

Households in Portsmouth pay around £142 a month — but better deals exist. Here's how to find them and how much you could save.

How to find the best deal in Portsmouth

• Check your current rate — look at the unit rate (p/kWh) and standing charge on your latest bill.
• Compare fixed vs variable — fixed deals lock in your price, variable follow the price cap.
• Look at the whole price, not just the headline rate. Standing charges add up.
• Watch exit fees — typically £30–£60 per fuel for fixed tariffs.
• Switch online — the process takes about 5 days and your supply is never interrupted.

Practical savings tips for Portsmouth homes

• Turn the thermostat down by 1°C — saves around £100/year for the average home.
• Use a smart meter to spot which appliances drive your bill.
• Wash clothes at 30°C and only run a full load.
• Draught-proof doors and windows — under £20 to fix, up to £125/year saved.