Octopus Go 12M Fixed Tariff 2026: Your Smart EV Charging Solution

Welcome to 2026, and a smarter way to power your electric vehicle (EV) and home with Octopus Energy. The Octopus Go 12M Fixed tariff is specifically designed for EV owners who want to take advantage of super cheap electricity rates during the early hours, alongside the peace of mind of fixed prices for a full year.

What is Octopus Go 12M Fixed?

Octopus Go 12M Fixed is a cutting-edge smart tariff from Octopus Energy, tailored for the growing number of electric vehicle drivers across the UK. It offers a unique structure:

• Super Cheap Overnight Electricity: Between 00:30 and 05:30 every night, you'll benefit from significantly reduced electricity unit rates. This 5-hour window is perfect for charging your EV, running your washing machine, or powering other high-drain appliances.
• Fixed Rates for 12 Months: Unlike variable tariffs, Octopus Go 12M Fixed locks in your electricity unit rates (both peak and off-peak) and standing charge for a full 12 months. This provides excellent budget predictability and protects you from potential price fluctuations in the energy market throughout 2026.
• Requires a Smart Meter: To accurately measure your energy consumption during different time bands, this tariff requires a working smart meter. If you don't have one, Octopus Energy can usually install one for you at no extra cost.

Who is Octopus Go 12M Fixed For?

This tariff is an ideal choice for specific households:

• Electric Vehicle Owners

  If you own an EV and charge it at home, Octopus Go 12M Fixed is almost certainly worth considering. The dedicated cheap overnight window makes charging your vehicle incredibly cost-effective, significantly reducing your running costs compared to charging on a standard tariff.

• Households with a Smart Meter

  As a smart tariff, a functioning smart meter is essential. If you already have one, you're ready to go! If not, Octopus Energy makes it easy to get one installed.

• Those Who Can Shift Energy Usage

  Beyond EV charging, if you're able to schedule other high-energy activities like running your dishwasher, tumble dryer, or washing machine during the 00:30 - 05:30 off-peak slot, you'll maximise your savings even further.

• Customers Seeking Price Certainty

  With fixed rates for 12 months, Octopus Go 12M Fixed offers peace of mind against rising energy costs. You'll know exactly what you're paying per unit for a significant period.

Benefits of Octopus Go 12M Fixed

Choosing Octopus Go 12M Fixed can bring a host of advantages to your home energy management:

• Massive Savings on EV Charging: This is the headline benefit. Powering your EV during the cheap overnight window can drastically cut your fuel bills.
• Budget Stability: Fix your electricity rates for 12 months, offering protection from market volatility and making budgeting simpler.
• Optimise Home Energy Use: The off-peak window encourages smart scheduling of other appliances, leading to overall lower energy bills.
• Contribute to a Greener Grid: By charging your EV and using energy during off-peak hours, you help balance demand on the national grid, often when renewable energy sources are more abundant.
• Award-Winning Customer Service: As with all Octopus Energy tariffs, you'll benefit from their highly-rated customer service and innovative approach to energy.

Considerations Before Switching

While Octopus Go 12M Fixed is fantastic for many, it's important to consider if it's the right fit for your specific circumstances:

• Higher Peak Rates: To offer such low overnight rates, the daytime (peak) electricity unit rates on Octopus Go 12M Fixed are typically higher than on a standard flexible tariff. If your household uses a significant amount of electricity during peak hours and cannot shift much usage, you might find your overall bill isn't as low as you expect.
• Requires a Smart Meter: This is non-negotiable. If you don't have one, you'll need to arrange installation.
• 12-Month Commitment: While fixed rates offer stability, you are committing for a year. Ensure you're happy with the terms.
• Off-Peak Window Suitability: The 00:30 - 05:30 window is great for overnight charging, but ensure it aligns with when you typically need to charge your EV or run high-demand appliances.

Current Rates for Octopus Go 12M Fixed (2026)

As of 2026, the standing charge for Octopus Go 12M Fixed is:

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

Please note: Electricity unit rates for both peak and off-peak periods on Octopus Go 12M Fixed vary slightly by region due to distribution network costs. We do not provide specific unit rates on this page, as they are personalised to your postcode. However, you will always see your exact, transparent unit rates during the quote process on the Octopus Energy website. The core feature remains the same: a significantly cheaper rate between 00:30 - 05:30 every night!

Getting the Most Out of Octopus Go 12M Fixed

To maximise your savings with this tariff:

1. Plug In Your EV Overnight: Make it a habit to plug in your EV before you go to bed, ensuring it charges fully during the cheap rate window.
2. Schedule Appliances: Utilise timers on your washing machine, dishwasher, and other suitable appliances to run them between 00:30 and 05:30.
3. Monitor Your Usage: Use your smart meter's in-home display or the Octopus Energy app to keep an eye on your consumption and adjust habits where possible.

Comparing Octopus Go 12M Fixed with Other Tariffs

Before making a decision, it's always wise to compare. Consider your typical daily electricity usage:

• If you use a lot of electricity during the day and very little overnight, a standard flexible tariff might sometimes be more cost-effective, despite the EV.
• If you have an EV and can shift a significant portion of your electricity usage to the off-peak window, Octopus Go 12M Fixed is likely to be a clear winner.
• Explore other EV tariffs from Octopus, such as Intelligent Octopus Flux, if you also have solar panels and a battery, as these offer different dynamics.

Always get a personalised quote directly from Octopus Energy for your specific postcode and estimated usage to see a direct comparison.

Switch to Octopus Go 12M Fixed Today!

Ready to supercharge your savings and take control of your EV charging costs in 2026? Switching to Octopus Go 12M Fixed is quick and easy. Plus, when you use our referral link, you and I both get a fantastic £50 credit on our accounts!

Don't miss out on cheaper overnight electricity and fixed rates for a year. Click here to get a quote and switch:

Switch to Octopus Go 12M Fixed and Get £50 Credit!