Octopus Agile explained: who it suits, and who it doesn't
Short answer first: Agile Octopus is worth it if you can reliably move a good chunk of your electricity out of 4pm to 7pm, and it is a bad idea if you can't.
Agile is a tariff where the price per unit changes every half hour, following the wholesale market. Some half hours are very cheap. Some are very dear. You win by using power in the first kind and avoiding the second.
That sounds simple, and it can be. But I'd rather show you what a real week looked like than wave at the theory.
How Agile works
Instead of one unit rate, you get 48 prices a day. They are published ahead of time, usually in the afternoon for the following day, so you can see tomorrow before it arrives.
A few things worth knowing, taken from Octopus's own product data on 25 October 2026:
- The unit rate is capped at 100p per kWh including VAT. Prices can't go above that.
- Prices can also drop below zero, which means you are paid to use electricity. It is rare, but it does happen.
- There is a daily standing charge as well. In Yorkshire (region M) it was 63.11p a day on Agile, against 60.89p a day on Flexible Octopus, the standard variable tariff.
For comparison, Flexible Octopus in Yorkshire was 25.60p per kWh, all day, on the same date.
What a real week of Agile prices looked like
These are unit-rate illustrations, not a bill. I pulled the half-hourly Agile prices for Yorkshire for the seven days from 18 to 24 October 2026, straight from the Octopus API. Here is what they showed.
| What I looked at | Price per kWh (inc VAT) |
|---|---|
| Simple average of every half-hour price in the week | 27.6p |
| Simple average from 4pm to 7pm | 47.6p |
| Simple average for the rest of the day | 24.8p |
| Cheapest half hour of the week | minus 2.3p |
| Dearest half hour of the week | 56.8p |
Three things jump out.
The 4pm to 7pm peak is real. In that week it averaged nearly double the rest of the day. This is the stretch when most of us are home, cooking, putting the lights on and the heating up.
The simple average is above the flat rate. The 27.6p is every half-hour price added up and divided by the number of slots, so it treats 3am the same as 6pm. It is not what a household would actually pay per unit, because nobody uses power evenly across the day. Your real average depends on when you use your electricity and how much you use in total, which is why one household can pay less on Agile than on Flexible while its neighbour pays more.
Standing charges matter too. Agile's was 2.22p a day higher than Flexible's on that date (63.11p against 60.89p), which is about £8 over a year. That is small next to the swings in the unit rate, but it is not nothing for a low-use household.
So treat the 27.6p against 25.60p as a picture of how prices behave, not as a verdict. The only fair test is a comparison weighted by your own half-hourly usage.
The cheap days can be very cheap. On Saturday 24 October the average price across the day was just 6.1p, and the cheapest half hour went below zero. But the days before were between 28p and 36p on average. Agile is a tariff that rewards paying attention, because the good days are not evenly spread.
I only looked at one region for one week, so don't treat any of these numbers as a promise for your house. Prices differ by region and change every day.
Who Agile suits
Agile tends to work for people who can answer yes to at least one of these:
- You charge an electric car at home. A big load that doesn't mind when it runs. This is the classic Agile household.
- You have a home battery. It can fill up in cheap slots and cover your evening peak.
- You are home in the day and flexible. If you work from home or are retired, running the washing machine at 1pm instead of 5pm is easy.
- You will actually look at the prices. Or you let an app or automation do it for you.
Here is why it matters. Take a tumble dryer load, which the site counts as 4.0 kWh:
- During the 4pm to 7pm peak, at the week's average, it costs about £1.90.
- On Flexible Octopus at 25.60p, it costs about £1.02.
- At the typical overnight price that week, around 20.5p, it costs about 82p.
Same load, same dryer. Over a year of three loads a week that gap adds up. If you can't move it, you pay the peak price.
Who it doesn't suit
Be honest with yourself here. Agile is probably not for you if:
- Most of your use is in the evening and can't move. Cooking, lights, telly and heating from 4pm to 7pm is exactly where Agile bites.
- You'd rather not think about it. A flat tariff gives you a flat bill. Agile gives you a bill that depends on what happened on the wholesale market.
- You are on a tight budget with no cushion. A run of expensive days can make your bill jump. A fixed or flat tariff is the more predictable choice.
- You are out all day and everything runs at teatime. Then you have little to move.
If you are in that group, a tariff with a fixed cheap window, like Octopus Go, might be a better fit. I covered the cheap hours for each in What's the cheapest time to use electricity in the UK?.
How to test it before you switch
Don't guess. You can check Agile against your own habits without signing anything.
- Work out when you use power. Your smart meter's half-hourly data shows how much of your use falls in 4pm to 7pm.
- Run a comparison weighted by your own usage. The Should I switch? tool takes your half-hourly usage and prices it on Agile and other tariffs, standing charges included. This is the test that counts, because it uses when you actually use power.
- See what moving would save. The Cheap Watts calculator shows the price of starting an appliance now against the cheapest slot, using live Agile prices.
- Check Octopus's own page. Eligibility and terms are on the Octopus Agile page, and they can change.
If the answer is that most of your use sits in the peak, you have your answer. If a good share can move, Agile could save you money.
Start with one thing: find out how much of your electricity you use between 4pm and 7pm. That single number tells you most of what you need to know.