What Intelligent Octopus Go does - and how it differs from basic Go
Standard Octopus Go is a simple two-rate tariff. You get a fixed cheap window from 00:30 to 04:30 at approximately 7p per kilowatt hour. Everything outside that window costs approximately 24-26p. It is straightforward and effective for EV charging if you remember to plug in before midnight.
Intelligent Octopus Go starts from the same foundation but adds a layer of genuine automation. The cheap window remains 00:30-04:30, but the tariff connects to your vehicle and smart charger through the Octopus platform. When you plug in, the system reads your battery's current state of charge and any departure time you have set. It then calculates exactly how much charging is needed to reach your target and schedules that charging optimally within the cheap window.
If you need a full charge from 20% to 80%, it will not necessarily run charging for the entire four-hour window. It will run it when needed, at the cheapest moments within that window, ensuring you reach your target with minimum cost. The system can also respond to wider grid signals, occasionally extending cheap charging beyond the standard window during periods of surplus renewable generation.
The result is that you never think about EV charging again. Plug in when you get home. Set your departure time. Wake up with the charge you need at the cost you want.
Vehicle and charger compatibility
The "intelligent" features of the tariff require your car and charger to communicate with the Octopus platform. Not every vehicle and charger combination supports this, and checking compatibility before signing up is essential.
Tesla vehicles, including the Model 3, Model Y, Model S, and Model X, work with Intelligent Go via the Octopus and Tesla integration. This connects through the Tesla API and does not require a specific charger, though a Tesla Wall Connector provides the best experience. BMW vehicles including the i3 and iX3 are compatible. Various Volkswagen Group EVs, including models from Volkswagen, Audi, SEAT, and Skoda, are supported. Renault Zoe and other Renault electric vehicles are on the compatibility list. The list continues to expand as Octopus adds new integrations.
On the charger side, OHME chargers are deeply integrated with Intelligent Go and provide a particularly smooth experience. Hypervolt chargers are also supported. Other compatible chargers from the approved list work through their own API connections.
Always check the current compatibility list on the Octopus Energy website before switching. The list updates regularly as new vehicles and chargers gain support. If your vehicle or charger is not currently compatible, standard Octopus Go delivers most of the financial benefit of the cheap overnight rate without the automated scheduling.
The charging experience: what actually happens when you plug in
This is the part that makes Intelligent Go worth understanding in detail, because the experience is significantly better than manually managing EV charging.
You arrive home and plug your car into the charger. The Octopus platform immediately sees the connection, reads the battery level from the vehicle API, and checks your set departure time in the Octopus app. It calculates how much charging is required to meet your target.
The system then schedules the charging session within the 00:30-04:30 cheap window to complete by your departure time. If you have set a 7:30am departure and need to go from 30% to 80% on a car that charges at 7kWh from a home charger, the system knows this takes roughly 5.5 hours at 7kWh, which fits comfortably within the cheap window. It may start charging at 00:30 and finish at 05:45, with the last portion outside the cheap window if needed to meet your departure target.
You wake up to a full car. You did not check prices. You did not set a timer. You did not think about electricity at all. This is the promise of Intelligent Go and it delivers on it reliably for compatible vehicles.
For households where EV charging is the primary energy concern, this automation is genuinely transformative. Comparing this to the manual scheduling of Agile, the difference in cognitive effort is substantial, even though Agile's prices can beat Intelligent Go's 7p rate on the best nights.
Rates: Intelligent Go vs Agile vs standard Octopus Go
Understanding how Intelligent Go prices compare to the alternatives clarifies who it suits and who should consider Agile instead.
Intelligent Go charges approximately 7p during the 00:30-04:30 cheap window. Outside that window, the rate is approximately 24-26p flat all day. There is no variation based on grid conditions and no daytime pricing benefit.
Standard Octopus Go offers the same cheap window rate and structure but without the automated scheduling. The financial difference between standard Go and Intelligent Go is in charging optimisation, not the unit rates.
Agile's overnight rates average approximately 4-5p per kilowatt hour across the year. On the cheapest nights, rates between midnight and 6am drop to 1-3p. During plunge pricing events, 5-10 of which occur each month, rates go negative. Agile's daytime rates also vary, with off-peak daytime hours typically running at 8-18p rather than Intelligent Go's flat 24-26p.
For pure EV charging cost, Agile wins on average for engaged users. For simplicity and whole-day rate comparison, Intelligent Go's flat daytime rate is more expensive than Agile's typical daytime range but removes the need to think about prices entirely. Visit the live dashboard to see today's Agile rates across every half-hour and judge the comparison against Intelligent Go's structure for yourself.
| Feature | Intelligent Go | Octopus Agile |
|---|---|---|
| EV charging automation | Yes - fully automatic | No - manual scheduling |
| Overnight rate | Fixed 7p (00:30-04:30) | 2-8p average, can go negative |
| Daytime rate | Flat 24-26p all day | Variable 8-50p (avg ~15p off-peak) |
| Plunge pricing | No | Yes - 5-10 events/month |
| Whole-home optimisation | EV only | All appliances |
| Engagement required | None after setup | Daily for full benefit |
Who Intelligent Go is better than Agile for
Intelligent Go beats Agile for a specific household type, and for that type it wins convincingly.
EV owners who charge nightly and want automation above all else should choose Intelligent Go. The 7p charge rate is excellent. The automation is reliable. The cognitive effort after initial setup is zero. For a household that drives consistently and charges every night or every few nights, Intelligent Go optimises the single largest variable electricity load automatically and consistently.
Households where the EV is the primary high-consumption overnight load, and where non-EV appliances are not actively managed, benefit most from Intelligent Go. The tariff is designed for exactly this use case. Trying to use Agile in the same situation requires manual scheduling that delivers modestly better rates but at significantly higher effort.
Anyone who has tried Agile and found the daily engagement stressful should consider Intelligent Go as a serious alternative. The financial difference between the two for an average EV household is often £50-100 per year. For many people, not thinking about electricity prices every day is worth £50-100 annually.
The catch: optimised for cars, not whole-home energy management
Intelligent Go's automation is specific to the electric vehicle. It does not extend to washing machines, dishwashers, storage heaters, batteries, or any other load in your home. Outside the 00:30-04:30 window, you pay a flat 24-26p for everything, at any time of day.
This matters for households with multiple high-consumption appliances they want to optimise. A household with a heat pump, an EV, a home battery, and a hot water cylinder has four loads that could benefit from dynamic price signals. Intelligent Go optimises one of them automatically and leaves the other three at the flat rate. Agile gives you price signals for all four, at all times, every day.
For the multi-device household that wants to reduce total electricity costs across the whole home rather than just for the car, Agile's daily transparency is significantly more valuable. The question is whether you will actually use that transparency. If you will check prices each evening and act on them, Agile delivers substantially more. If you will check prices occasionally and act inconsistently, Intelligent Go's automated car charging captures the most important saving reliably.