Ofgem’s price cap is rising in January 2026 – here’s why Octopus customers are looking at time-of-use tariffs
Ofgem’s energy price cap will rise to £1,736 per year for a typical dual-fuel household from January 2026, as announced in October 2025 (Ofgem, 2025). This increase makes standard variable tariffs more expensive, pushing homeowners to consider alternative rates that track wholesale prices more directly. Octopus Tracker and Octopus Agile are the two most-discussed alternatives among UK households, both offering unit rates below the price cap for much of the year.
Octopus Tracker saves 10-20% below the Ofgem price cap with a monthly fixed rate, while Agile averages 15% below but changes every 30 minutes. Choose Tracker for simplicity or Agile if you can shift usage to cheap off-peak hours.
- Tracker sets a monthly rate based on wholesale prices.
- Agile changes unit rate every 30 minutes.
- Tracker saves 10-20% below Ofgem price cap typically.
- Agile average 15% below price cap in 2025.
- No exit fees on either tariff from Octopus.
- Ofgem's price cap is rising in January 2026 – here's why Octopus customers are looking at time-of-use tariffs
- Octopus Tracker gives you a fixed daily rate that changes monthly, linked to wholesale prices
- Octopus Agile changes your unit rate every 30 minutes, following real-time wholesale prices
- Quick numbers typical costs, savings, and risks for Tracker vs Agile vs Go
- Octopus Tracker is the simpler choice if you want predictable savings without shifting your daily routine
- Eligibility and installer checks – you don't need a new boiler, but you do need the right meter and supplier
- When Agile beats Tracker – high-consumption households with flexible routines can save more
- How to decide in 2026 – check your annual usage, your routine, and your risk tolerance
Octopus Go is a separate option for electric-vehicle owners with off-peak charging rates, but this article focuses on the two non-EV tariffs: Tracker and Agile. The core question for homeowners is whether the potential savings justify the complexity of time-of-use pricing.
Octopus Tracker gives you a fixed daily rate that changes monthly, linked to wholesale prices
Octopus Tracker sets its unit rate once per month based on the previous month’s wholesale energy index (Octopus Energy, 2026). The standing charge remains the same as the standard variable tariff, currently around 60p per day for electricity (Octopus Energy, 2026). Typical savings range from 10–20% below the Ofgem price cap in recent months, though there is no price floor, if wholesale prices spike, the unit rate rises accordingly (DESNZ, 2026).
There is no exit fee and no requirement for a smart meter, though Octopus recommends one for accurate billing. The monthly reset removes the need to monitor half-hourly prices. That makes it a straightforward option for households that cannot or do not want to shift their electricity usage throughout the day.
Octopus Agile changes your unit rate every 30 minutes, following real-time wholesale prices
Octopus Agile updates its unit rate every 30 minutes, with prices published a day ahead on Octopus’s website and app (Octopus Energy, 2026). The average Agile rate in 2025 was around 15% below the price cap, but peak rates can be 3–4 times higher during periods of high demand or low renewable generation (DESNZ, 2026). A smart meter is mandatory for Agile, as the tariff relies on half-hourly consumption data for billing (Octopus Energy, 2026).
The risk is significant: a single high-price day can wipe out a month’s savings if the homeowner cannot shift usage to cheaper hours. Agile rewards households that can run appliances at 2 AM or during midday solar peaks, but punishes those who use electricity during the 4–7 PM evening peak without adjustment.
Quick numbers typical costs, savings, and risks for Tracker vs Agile vs Go
| Tariff | Average unit rate (p/kWh, 2026 Q1 estimate) | Typical savings vs price cap (%) | Risk level | Smart meter required | Exit fee |
|---|---|---|---|---|---|
| Octopus Tracker | 22.5 p/kWh | 10–20% | Low | No (recommended) | No |
| Octopus Agile | 21.0 p/kWh | 15–30% (with load shifting) | Medium–High | Yes | No |
| Octopus Go | 7.5 p/kWh (off-peak), 30.0 p/kWh (peak) | Variable (EV-dependent) | Low | Yes | No |
| Standard variable tariff (price cap) | 26.5 p/kWh | 0% | Low | No | No |
Sources: Octopus Energy tariff comparison page (Octopus Energy, 2026) and DESNZ energy price statistics (DESNZ, 2026).
Octopus Tracker is the simpler choice if you want predictable savings without shifting your daily routine
For most homeowners comparing Octopus Tracker vs Agile, Tracker offers lower risk and simpler savings. The monthly reset removes the need to monitor half-hourly prices, and the savings are more consistent, typically 10–20% below the price cap without any behavioural change. Agile requires active load-shifting to realise its full savings potential, which means running washing machines, dishwashers, and other appliances during low-price windows, often at night or midday.
This is impractical for many households with fixed work schedules, young children, or limited control over when they use energy. Tracker’s savings are more predictable, while Agile’s can be higher but more volatile, especially during winter cold snaps when wholesale prices spike. For the typical homeowner who wants a set-and-forget tariff, Tracker is the safer bet.
Eligibility and installer checks – you don’t need a new boiler, but you do need the right meter and supplier
Both tariffs are available to any Octopus Energy customer with a smart meter (Tracker) or a smart meter only (Agile) (Octopus Energy, 2026). No specific certification like MCS or Gas Safe is needed because no new hardware is installed, the switch is purely a tariff change. If a homeowner is switching from a non-Octopus supplier, they first need to join Octopus Energy, which is a standard switch taking 2–3 weeks (Ofgem, 2026).
Octopus Go requires an EV or home battery to benefit from the low off-peak rate, but Tracker and Agile do not. Any homeowner with a smart meter can apply for Tracker or Agile through the Octopus Energy app or website, with no installation visit or additional hardware required.
When Agile beats Tracker – high-consumption households with flexible routines can save more
Agile’s average rate in 2025 was lower than Tracker’s, but only for households that shifted 50% or more of their usage to low-price hours (typically between 10 PM and 6 AM, plus midday solar peaks) (DESNZ, 2026). Octopus Energy’s own data shows that Agile users who actively shift usage save 25–30% versus the price cap, compared to 10–20% for Tracker (Octopus Energy, 2026).
However, a single cold snap or grid event can spike Agile rates to 50p/kWh or more, eroding months of savings in a few hours (Ofgem, 2026). Agile is therefore recommended only for homeowners with electric vehicles, heat pumps, or battery storage who can automate load shifting through smart charging or time-controlled appliances. For households without this flexibility, Tracker is the more reliable option.
Octopus tariffs vs standard variable explained
How to decide in 2026 – check your annual usage, your routine, and your risk tolerance
The decision between Octopus Tracker and Agile depends on three factors: your ability to shift usage, your annual electricity consumption, and your tolerance for price volatility. If you cannot shift your electricity usage away from peak hours (4–7 PM), pick Tracker. If you can shift 50% or more of your usage, compare Agile’s average rate against Tracker’s current monthly rate in the Octopus app.
Before switching, check the Octopus Energy app for your half-hourly usage patterns over the past few months (Octopus Energy, 2026). A practical approach is to start with Tracker for 3 months, then switch to Agile if you find you can easily shift usage, there are no exit fees on either tariff. For most UK homeowners in 2026, Octopus Tracker is the safer bet, offering consistent savings without the mental overhead of half-hourly price monitoring. Agile is for the energy-savvy household that can actively manage consumption and has the technology to automate load shifting.
Best time-of-use energy tariffs compared 2026
Frequently Asked Questions
Octopus Tracker fixes its unit rate monthly based on wholesale prices, while Octopus Agile changes every 30 minutes following real-time wholesale costs. Tracker offers simpler budgeting, but Agile can yield bigger savings if you shift usage to cheap periods (Octopus Energy, 2026).
Octopus Agile averaged around 15% below the Ofgem price cap in 2025, while Tracker saved 10-20% typically. Agile can be cheaper if you avoid peak hours, but Tracker is more predictable (Ofgem, 2025).
No, Octopus Tracker does not require a smart meter, though Octopus recommends one for accurate billing. Octopus Agile requires a smart meter to track half-hourly usage (Octopus Energy, 2026).
Yes, you can switch between Octopus Tracker and Agile at any time with no exit fees. Octopus allows customers to move between their time-of-use tariffs freely (Octopus Energy, 2026).
Neither Tracker nor Agile is designed for electric vehicles. Octopus Go offers a dedicated off-peak rate for EV charging, typically cheaper than both Tracker and Agile for overnight use (Octopus Energy, 2026).
