Intelligent Octopus Go 12M Fixed - EV Saver Tariff 2026 Explained

As we navigate the energy landscape of 2026, managing household bills efficiently remains a top priority for UK homes. For electric vehicle (EV) owners, finding a tariff that not only offers great value but also intelligently optimises charging can make a significant difference. Enter Octopus Energy's “Intelligent Octopus Go 12M Fixed - EV Saver” – a tariff designed specifically with EV drivers in mind, offering both price certainty and smart charging capabilities.

This comprehensive guide will break down everything you need to know about this innovative tariff for 2026, helping you decide if it's the right choice for your home and electric vehicle.

What is Intelligent Octopus Go 12M Fixed - EV Saver?

Intelligent Octopus Go 12M Fixed - EV Saver is a specialised electricity tariff from Octopus Energy, tailored for households with an electric vehicle. As the name suggests, it offers fixed electricity rates for a full 12 months, providing peace of mind against fluctuating energy prices throughout 2026.

The core benefit of this tariff is its unique combination of a super low electricity rate during a dedicated off-peak window (typically 23:30 - 05:30 every night) and Octopus Energy's intelligent smart-charging technology. This means your electric car isn't just charged during the cheap hours; it's charged at the absolute cheapest and greenest times within that window, automatically managed by Octopus Energy's award-winning platform.

This tariff requires a compatible smart meter and an eligible electric vehicle or charger to fully utilise its intelligent features.

Who Is This Tariff Best Suited For?

Intelligent Octopus Go 12M Fixed - EV Saver is ideal for:

• Electric Vehicle Owners: This is the primary target audience. If you own an EV and typically charge it overnight at home, this tariff is designed for you.
• Smart Home Enthusiasts: Those who appreciate smart technology that automates energy usage for efficiency and cost savings will find the intelligent charging appealing.
• Households Seeking Price Certainty: With fixed rates for 12 months, you'll have predictable electricity costs, protecting you from potential price rises throughout 2026.
• High Night-Time Electricity Users: While primarily for EV charging, if you have other high-demand appliances (e.g., storage heaters, washing machine, dishwasher) you can run during the 23:30 - 05:30 off-peak window, you can benefit significantly from the lower unit rate.
• Environmentally Conscious Consumers: The intelligent charging system not only seeks out the cheapest times but also the greenest, helping to balance the grid and maximise renewable energy usage.

Key Benefits of Intelligent Octopus Go 12M Fixed - EV Saver

Opting for this tariff in 2026 comes with a host of advantages:

• Fixed Rates for 12 Months

  Enjoy stable electricity prices for a full year. This provides invaluable budget certainty, allowing you to plan your finances without worrying about sudden changes in unit rates.

• Super Low Off-Peak Electricity Rate

  Benefit from a significantly reduced electricity rate between 23:30 and 05:30. This makes charging your EV, and potentially running other appliances, incredibly cost-effective.

• Intelligent EV Smart Charging

  This isn't just a simple timer. Octopus Energy's system communicates with your EV or charger to determine the optimal time to charge within your off-peak window, considering grid demand, wholesale prices, and renewable energy availability. Simply plug in, tell the Octopus app your desired charge level and departure time, and let it do the rest.

• Reduced Carbon Footprint

  By intelligently charging your car when the grid is greener (i.e., when renewable energy generation is high), you're actively contributing to a more sustainable energy system.

• Hassle-Free Management

  The Octopus Energy app provides full control and visibility over your charging, making it easy to set preferences and monitor usage.

Potential Drawbacks to Consider

While highly beneficial for many, it's important to consider if this tariff is the right fit for your specific circumstances:

• Requires an EV and Compatible Setup

  This tariff is specifically designed for EV owners and requires a compatible electric vehicle or smart charger that can communicate with Octopus Energy's system.

• Fixed Tariffs Don't Benefit from Price Drops

  While protection from price rises is a major plus, if wholesale energy prices were to drop significantly during your 12-month fixed period, you wouldn't immediately see that benefit. However, the certainty often outweighs this risk for many.

• Higher Day-Time Unit Rate

  Like all time-of-use tariffs, the day-time electricity rate will typically be higher than the off-peak rate. If you consume a significant amount of electricity during peak hours and can't shift much of your usage to the off-peak window, this tariff might not offer maximum savings.

Current Rates (2026)

For Intelligent Octopus Go 12M Fixed - EV Saver, the following standing charge applies:

• Standing Charge: 42.422625p/day (inc VAT)

Please note: Unit rates for this tariff are highly competitive but can vary slightly by region. As per our policy, we do not publish specific unit rates here to ensure you always receive the most up-to-date information directly from Octopus Energy. For the precise peak and super low off-peak unit rates applicable to your postcode, please visit the Octopus Energy website.

Comparing Intelligent Octopus Go 12M Fixed - EV Saver with Other Tariffs

When considering this tariff, it's wise to compare it against other options:

• Standard Variable Tariffs: These offer no price certainty. Intelligent Octopus Go 12M Fixed - EV Saver provides stability for 12 months.
• Other Go Tariffs (e.g., Octopus Go): While other Go tariffs offer an off-peak rate, they typically don't include the 'Intelligent' smart charging feature, which optimises for cost and carbon automatically.
• Agile Octopus: Agile is a truly dynamic tariff where rates change every 30 minutes based on wholesale prices. While it can offer incredible savings for flexible users, it also carries the risk of high peak prices. Intelligent Go Fixed offers a simpler, more predictable approach for EV owners.

To make the best decision for 2026, estimate your total electricity usage – particularly how much you can shift to the off-peak window (23:30-05:30) – and compare this with the fixed rates and intelligent features on offer.

Switch to Intelligent Octopus Go 12M Fixed - EV Saver Today!

If you're an EV owner looking for a smart, cost-effective, and environmentally friendly way to power your home and car in 2026, Intelligent Octopus Go 12M Fixed - EV Saver could be your perfect match. With fixed rates for 12 months and intelligent charging, it simplifies your energy management and helps you save.

Ready to make the switch and join the thousands of satisfied Octopus Energy customers? Use our referral link to get £50 credit when you switch to Octopus Energy!

Switch to Octopus Energy and get £50 credit!