Economy 7 has been around since the 1970s — designed for storage heaters and hot water tanks that charge overnight. But in 2026, with EVs, smart appliances, and new-generation tariffs like Octopus Agile, the question of whether Economy 7 beats a standard tariff is more nuanced than ever. Here is the honest answer.

How Economy 7 Works

Economy 7 gives you 7 hours of cheap electricity — typically midnight to 7am, though the exact window varies by region and meter type. Off-peak rates average 9-12p/kWh in 2026 versus 24.5p/kWh on a standard tariff. The catch: Economy 7 daytime rates are typically higher than standard — around 28-32p/kWh — to compensate suppliers for the cheap overnight rate. If you want to take control of your energy bills, it only takes a few minutes.

When Economy 7 Wins

Economy 7 works in your favour when you can shift a significant portion of your electricity consumption to the overnight window. Ideal scenarios:

• EV charging: If you charge overnight, the savings are substantial. At 10p/kWh overnight vs 24.5p standard, charging a 60kWh EV costs £6 vs £14.70 — saving £8.70 per charge, potentially £1,000+/year for high mileage drivers
• Storage heaters: Designed specifically for Economy 7 — they charge overnight and release heat during the day
• Electric hot water cylinder: Timer your immersion to heat overnight and you could save £80-£120/year on hot water alone
• Dishwasher and washing machine: Delay-start to run overnight and save around 14-15p per cycle

When Standard Tariff Wins

If you cannot shift usage to overnight hours — perhaps you work from home and use electricity all day, or you have young children who need the washing machine during the day — Economy 7 will likely cost you more. The higher daytime rate erodes any overnight savings quickly. You can also energy saving tips to see what’s available.

The Modern Alternative: Octopus Agile or Intelligent Go

For EV owners especially, Intelligent Octopus Go at a flat 7p/kWh overnight often beats Economy 7 significantly. Octopus Agile goes further with half-hourly pricing — electricity can drop below 5p or even go negative at times of surplus renewable generation. These newer tariffs require a smart meter but outperform Economy 7 in most modelling. Ready to cut your energy costs? Compare deals today.