What Octopus Agile is
Octopus Agile is a variable electricity tariff where the price changes every 30 minutes, tracking the wholesale electricity market. Prices are set the evening before and cover the full following day, so you always have at least 24 hours of price visibility.
Overnight rates typically fall to 2-8p/kWh. Peak rates (5pm to 8pm) run to 25-50p/kWh. On around five to ten occasions each month, grid conditions cause "plunge pricing" events where rates go negative, sometimes as low as -20p/kWh. When prices go negative, Octopus pays you for every unit you use.
The tariff requires a SMETS2 smart meter that transmits half-hourly readings to Octopus so your bill reflects the actual price in each slot you consumed electricity. You can track live and upcoming prices on tools like the AgileAlert dashboard, which shows the full day's prices and highlights the cheapest windows.
For a full technical explanation of how prices are set, see the how Agile prices are set daily guide. This review focuses on the real-world experience.
What customers love
The most consistent theme across thousands of Agile customer reviews is the satisfaction of paying dramatically less than everyone else for the same electricity. That satisfaction is not trivial. It creates a positive feedback loop that makes the tariff self-reinforcing.
Significant savings that show up in real bills. Octopus's own data confirms £440 average annual savings, and community reports consistently support this. Many customers post their monthly bills to energy forums and the reduction compared to pre-Agile costs is often striking. Customers who switched from standard variable tariffs frequently report savings of £30-50 per month, which over 12 months compounds to £360-600 per year.
The satisfaction of cheap overnight electricity. There is a specific pleasure to scheduling your washing machine to run at 3am at 4p/kWh and seeing the £0.06 charge on your bill. Customers describe it as "beating the system." It does not feel like sacrifice. It feels like winning.
Plunge pricing events. Five to ten times per month, particularly during high-wind overnight periods, Agile prices go negative. Octopus credits your account for every unit you use during these events. Customers who run their dishwasher, washing machine, or charge their EV during plunge pricing events receive a small payment. It feels extraordinary the first time. It normalises quickly, which says something about how fundamentally different Agile is from any other tariff.
Environmental alignment. Cheap Agile prices correlate directly with high renewable generation. When it is windy and prices are 3p/kWh, that is because the grid is flooded with clean wind power and needs to offload it. Using electricity at those moments is not just cheap: it is the most carbon-efficient electricity available. UK renewables supplied 50.8% of electricity in 2024 and that proportion is rising. Agile customers naturally shift usage to those clean windows. Many customers value this environmental alignment as much as the financial saving.
The daily price-checking habit. Regular Agile customers describe building a 30-second daily habit of checking prices each evening. Using tools like AgileAlert, they scan the overnight window, identify the cheapest slot, and set timers. Over time this becomes automatic. Customers describe it as making them feel in control of their energy costs for the first time.
What customers find frustrating
Honesty matters here. Agile has genuine friction points that affect some customers significantly.
Peak anxiety on cold evenings. In winter, the 5pm-8pm peak window can be genuinely stressful for households with inflexible evening routines. Cooking dinner, running baths, watching television, and any other normal activity during peak hours costs 30-45p/kWh, sometimes more during high-demand events. Customers who have not yet fully shifted their patterns describe a feeling of "watching the clock" between 5pm and 8pm. This anxiety reduces with time as habits form, but it is a real feature of early Agile life.
The need to check prices regularly. Agile is not a set-and-forget tariff. It rewards engagement. Customers who switch to Agile but do not check prices regularly often find their bills do not fall as much as they expected. The tariff requires a modest but consistent investment of attention. For some households, that feels like a chore. For others, it becomes an enjoyable game.
Bill variability month to month. An Agile bill in winter can be significantly higher than one in summer, even for the same usage, because wholesale prices are higher and peak rates are more extreme. Customers used to predictable flat bills sometimes find this variability unsettling. It is worth knowing in advance: a particularly cold, still week in January can push bills noticeably higher than the monthly average.
SMETS1 meter uncertainty. Customers with older SMETS1 smart meters face uncertainty about compatibility. Some meters have been enrolled in the DCC network and work fine with Agile. Others have not and require a meter replacement before switching. The process of confirming compatibility is not always smooth. Octopus is helpful, but the resolution sometimes takes more time than customers expect.
Savings in 2026: is it still worth it post-price-cap rise?
The July 2026 Ofgem price cap is set at 26.11p/kWh. That is the rate roughly 70% of UK households pay for every unit of electricity, whether they use it at 2am or 6pm on a winter evening.
Against that backdrop, Agile overnight rates of 3-8p/kWh represent a spread of 18-23p per unit shifted. That spread is historically wide. Before the 2022 energy crisis, when the price cap was around 15p, the spread was only 8-10p. The case for Agile, measured by saving per unit shifted, is stronger in 2026 than it has ever been.
The total potential saving, £440 on average, has grown in line with the cap. Customers who saved £300 per year in 2022 are saving £440 today for the same behaviour, because the baseline they are comparing against (the cap rate) has risen while overnight Agile rates have remained low.
This is not a coincidence. Overnight Agile rates are low because renewable generation is abundant at night and the grid has surplus power to offload cheaply. That dynamic is independent of retail price cap movements. As the cap goes up, the value of overnight Agile electricity relative to the cap increases proportionally. The current environment is about as favourable as it could be for Agile savers.
Agile vs competitors: where it leads and where it falls short
Octopus is not the only supplier offering dynamic pricing, but it is the market leader by a significant margin. Here is an honest comparison with the closest alternatives.
Where Agile leads. Octopus Agile offers more granular pricing than any competitor, with 48 half-hourly slots per day rather than two or three time-of-use bands. It offers the most transparent data access, including a free API that tools like AgileAlert use to display prices. And it offers plunge pricing, which pays customers for usage during surplus renewable events, something no flat-rate or simple time-of-use tariff can match.
Intelligent Octopus Go is Octopus's EV-specific tariff and is simpler than Agile for pure EV charging. It offers a fixed cheap overnight rate (typically around 7p/kWh) for a set window each night, automatically calculated for your EV via smart charger integration. For EV owners who do not want to actively manage prices, Intelligent Go may outperform Agile in convenience, though the very best Agile savers with active management can beat the Intelligent Go rate on many nights.
Octopus Cosy offers fixed cheap windows at set times and suits households who want predictability without full flat-rate pricing. It is a simpler product that requires less engagement. For households who want to save some money without building a price-checking habit, Cosy is a reasonable alternative. For households willing to engage actively, Agile delivers higher savings.
Competitors including OVO, EDF, and British Gas offer some time-of-use products, but none yet matches Agile's data transparency, plunge pricing, or community of engaged users. The market is moving in Agile's direction, but Octopus currently leads by a clear margin.
Customer satisfaction: what the data shows
Octopus Energy consistently ranks as the top-rated energy supplier in the UK. Which? magazine has named Octopus the best UK energy supplier for multiple consecutive years. On Trustpilot, Octopus Energy holds a 4.5+ star rating based on over 200,000 reviews, making it one of the highest-rated utilities in any sector.
Customer satisfaction reflects both the tariff itself and Octopus's service quality. The company built its reputation on transparent billing, responsive customer service, and innovative product design. Agile is the product that established that reputation in the early adopter community, and the customer feedback across forums and review sites backs it up.
Where negative reviews appear, they typically concern billing disputes (rare), meter compatibility issues during switching, or bill variability in winter that customers had not fully anticipated. Very few negative reviews cite the fundamental tariff design as a problem. The product works as advertised, and the savings are real.
Explore the AgileAlert live prices dashboard to see the rates available in your region today. The data behind the savings is right there, updated every 30 minutes.
The verdict for 2026
Octopus Agile in 2026 is a stronger proposition than it has been at any previous point in its existence. The gap between the price cap and overnight Agile rates is historically wide. Renewable generation continues to grow, increasing the frequency of cheap overnight windows. And the tariff's tools and support infrastructure, from the Octopus app to third-party dashboards, have matured significantly.
For households with any meaningful degree of usage flexibility, this is the best tariff available in the UK. The £440 average saving is not a theoretical number. It is what real households with modest flexibility actually experience. EV-owning households save more. Solar-plus-battery households can near-eliminate their net electricity cost.
The honest caveats are real: peak anxiety in winter, the need for regular price-checking, bill variability, and SMETS1 complexity. None of these are reasons not to switch for most households. They are aspects of the tariff to understand and manage.
For the majority of UK households with a smart meter and any ability to shift appliance timing, Agile in 2026 is the financially and environmentally optimal electricity tariff. That verdict is not hedged.