Octopus vs ScottishPower: Which Supplier Is Better?

Choosing between Octopus and ScottishPower depends on what you expect from an energy supplier. Octopus is known for smart tariffs, electric-vehicle charging, solar and battery integration, detailed digital tools and comparatively strong customer-service results. ScottishPower is an established supplier backed by Iberdrola, with a strong connection to UK wind generation, renewable tariffs and a growing range of EV, solar and energy-shifting products.

Octopus Energy passed eight million UK customers in April 2026, making it the country’s largest energy supplier by customer numbers. ScottishPower serves approximately 4.5 million customers and remains one of the UK’s largest energy retailers.

This guide compares Octopus Energy vs ScottishPower across pricing, fixed deals, smart tariffs, EV charging, renewable energy, customer service, apps, solar export, business energy and supplier stability.

Quick Comparison: Octopus vs ScottishPower

Prices and tariff availability depend on postcode, meter type, payment method and household usage. Customers should obtain live quotes from both suppliers before switching.

Octopus vs ScottishPower: Detailed Comparison

Let’s compare Octopus Energy and ScottishPower across the key areas that matter most, including pricing, tariffs, customer service, EV charging and renewable energy.

1. Pricing

From 1 July to 30 September 2026, Ofgem’s energy price cap is £1,862 per year for a typical dual-fuel household paying by Direct Debit.

The national average capped electricity price is 26.11p per kWh, with an electricity standing charge of 57.19p per day. The average gas price is 7.33p per kWh, with a gas standing charge of 29.04p per day. Regional rates can differ.

The £1,862 figure is not a maximum bill. A household’s actual cost depends on how much electricity and gas it uses.

Octopus Energy Pricing

Flexible Octopus is the supplier’s standard variable tariff. Its prices move in response to price-cap changes, although Octopus says it keeps this tariff below the Ofgem cap.

Octopus also offers Tracker, where electricity and gas rates change daily according to wholesale-market prices. Tracker has no exit fee, but customers who leave during the 12-month tariff period generally cannot rejoin for nine months. Its maximum daily rates are considerably higher than Ofgem’s cap, making it unsuitable for customers who cannot tolerate price volatility.

Agile Octopus changes electricity prices every 30 minutes. It can reward households that move significant electricity consumption away from expensive evening periods, but rates can rise as high as 100p per kWh during wholesale-market spikes.

ScottishPower Pricing

ScottishPower’s Standard tariff is a variable plan controlled by the Ofgem price cap. Its current range also includes fixed tariffs and a Cap Tracker product.

ScottishPower’s Cap Tracker September 2027 currently carries an exit fee of £50 per fuel. The supplier advises customers to check each tariff’s information label because some plans have exit fees while others do not.

Pricing Verdict

Octopus offers more pricing flexibility. Tracker and Agile give customers direct exposure to changing wholesale prices, while Flexible Octopus provides a more conventional price-cap-protected option.

ScottishPower’s tariffs may still be cheaper for an individual postcode, particularly where it offers a competitive personalised fixed deal.

• Best for wholesale-linked prices: Octopus Energy.
• Best for predictable standard pricing: Tie.
• Best for avoiding an exit fee: Octopus Tracker or a variable tariff.
• Most important comparison: Estimated annual cost using identical consumption figures.

2. Fixed Tariff Options

Fixed tariffs lock electricity and gas rates for a stated period. They provide protection if market prices rise, but customers can lose money if variable prices fall below the fixed rate.

Octopus Energy Fixed Tariffs

Octopus commonly offers 12-month fixed plans. A published snapshot from 26 May 2026 priced its 12-month fixed tariff at approximately £1,780 for typical use, which was £82 below the subsequently announced July price cap.

However, Octopus clearly stated that the tariff was regularly adjusted. Its fixed plan at that time included an exit fee of £50 per fuel, so that figure should not be treated as a guaranteed current quote.

ScottishPower Fixed Tariffs

ScottishPower offers conventional fixed plans alongside green fixed products that may include additional benefits, such as renewable electricity or a home-service product.

Its usual charge for leaving an eligible fixed tariff more than seven weeks before the end is £50 per fuel. However, ScottishPower says customers can move to another ScottishPower tariff without paying the supplier’s exit fee.

Fixed Tariff Verdict

Neither supplier is automatically better for fixed pricing because the winner changes whenever tariffs are updated.

• Octopus is better for: Customers receiving the lower live annual estimate.
• ScottishPower is better for: Customers who value moving between ScottishPower tariffs without an internal exit fee.
• Before fixing: Compare unit rates, standing charges and both fuel exit fees.
• Remember: A fixed unit rate does not create an unlimited fixed bill.

3. Smart Tariff Choice

Smart tariffs are one of the biggest differences between Octopus Energy and ScottishPower.

Octopus Energy Smart Tariffs

Octopus has developed tariffs for several types of smart-energy customer:

• Agile Octopus for half-hourly wholesale pricing.
• Octopus Tracker for daily wholesale-linked rates.
• Intelligent Octopus Go and Octopus Go for EV charging.
• Octopus Flux and Intelligent Octopus Flux for solar and batteries.
• Outgoing Octopus for exported electricity.
• Specialist tariffs for heat-pump users.

The supplier’s system is designed to connect smart meters, EVs, chargers, solar panels, batteries and heat pumps to tariffs that respond to time or wholesale-market conditions.

ScottishPower Smart Tariffs

ScottishPower’s smart range is now more competitive than older comparisons may suggest.

Power Saver allows eligible customers to choose up to eight one-hour discounted slots each week. Depending on the selected slot, customers receive a 50% or 20% electricity discount. Customers who do not select slots automatically receive half-price electricity between midday and 4pm on Saturdays and Sundays. Consumption eligible for credit is limited to 2kWh per chosen one-hour period.

ScottishPower also offers EV Saver, EV Optimise and Solar Saver, although eligibility rules mean customers may not be able to combine every smart product.

Smart Tariff Verdict

Octopus wins because its range covers more technologies and gives customers more ways to respond to wholesale prices.

ScottishPower’s Power Saver is nevertheless attractive for households that want predictable discounted periods without managing half-hourly Agile prices.

• Best overall smart-tariff range: Octopus Energy.
• Best simple weekly reward programme: ScottishPower Power Saver.
• Best for heat pumps, batteries and complex smart homes: Octopus Energy.
• Smart meter requirement: Applies to most advanced products from both suppliers.

4. EV Charging Support

Both suppliers offer dedicated EV tariffs, but they differ in off-peak prices, charging windows and smart charging features. Here’s how they compare.

Octopus Energy EV Charging

Intelligent Octopus Go currently provides six hours of electricity at 8p per kWh between 11:30pm and 5:30am for the whole home.

The supplier also schedules charging for compatible vehicles or chargers during cheaper periods. Octopus says customers on the fixed Intelligent Octopus Go tariff saved an average of £771 between May 2025 and April 2026 compared with what their usage would have cost on Flexible Octopus. Individual savings will vary substantially.

ScottishPower EV Charging

ScottishPower’s EV Saver tariff provides electricity at 8.5p per kWh between midnight and 5am. The cheaper five-hour rate applies to household electricity used during that window, not only the vehicle.

The tariff is backed by 100% green electricity and requires an eligible ScottishPower account, Direct Debit and a compatible smart meter capable of providing half-hourly data.

EV Optimise is an alternative smart-charging service. It manages a compatible vehicle’s charging according to the customer’s required charge level and completion time. It can schedule eligible charging during cheaper and greener periods without using a single fixed off-peak window.

EV Charging Verdict

Octopus has the stronger standard EV tariff because its overnight window is an hour longer and its listed off-peak rate is slightly lower.

ScottishPower remains competitive, particularly for drivers whose vehicles work with EV Optimise.

• Lower listed overnight rate: Octopus Energy at 8p/kWh.
• Longer fixed off-peak window: Octopus Energy, six hours.
• ScottishPower EV Saver: 8.5p/kWh for five hours.
• Best overall EV experience: Octopus Energy.
• Before switching: Check the vehicle, charger and smart-meter compatibility lists.

5. Renewable and Low-Carbon Energy

Both suppliers have strong green credentials, but their approaches are different.

Octopus Energy

For the fuel-mix reporting period from 1 April 2024 to 31 March 2025, Octopus reported that its UK electricity mix was 100% zero carbon.

Its disclosed mix consisted of 86.4% renewable electricity and 13.6% nuclear electricity, with no gas, coal or other fossil-fuel generation included.

Octopus also invests in renewable generation projects and offers smart tariffs intended to encourage customers to use electricity when renewable power is more plentiful.

ScottishPower

ScottishPower says the renewable electricity supporting its green tariffs is sourced directly from its own wind farms and backed by green-energy certificates.

This gives ScottishPower a particularly clear proposition for customers who want their tariff linked to wind generation owned by the same wider corporate group.

Green Energy Verdict

This comparison depends on how the customer defines green energy.

• Best disclosed zero-carbon fuel mix: Octopus Energy.
• Best for electricity linked to the supplier’s own wind farms: ScottishPower.
• Best broad smart-energy ecosystem: Octopus Energy.
• Best specifically wind-focused identity: ScottishPower.
• Overall green verdict: Tie, with different strengths.

6. Customer Support Experience

Citizens Advice compared energy suppliers using complaints, contact waiting times, billing and metering performance, and customer commitments for January to March 2026.

Octopus Energy ranked fourth with an overall score of 3.67 out of 5. It received 3.5 for complaints, 3.6 for waiting time, 3.4 for billing and metering, and 5 for customer commitments.

ScottishPower ranked tenth with an overall score of 2.94 out of 5. It performed slightly better than Octopus for contact waiting time, scoring 4.0, but its weaker complaints score reduced its overall rating.

Citizens Advice is scheduled to publish the next quarterly results in September 2026.

Customer Service Verdict

Octopus is the clear winner based on the current independent results.

• Octopus Energy: 3.67/5 and fourth place.
• ScottishPower: 2.94/5 and tenth place.
• Better overall customer service: Octopus Energy.
• Better contact waiting-time score: ScottishPower.
• Important: Ratings should be checked again after each quarterly update.

7. Digital Account and Usage Tracking

Octopus’s app allows customers to view account balances, bills, payments, tariffs and smart-meter consumption.

Customers with an Octopus Home Mini can receive close-to-live energy information through the Octopus app. The device sends smart-meter data to the supplier’s platform, helping customers identify consumption changes as appliances are switched on and off.

This data also supports Octopus’s smart tariffs, EV scheduling, battery management and export products.

ScottishPower’s app supports bills, payments, meter readings, tariff changes and energy-use tracking. Power Saver customers can use the app to choose discounted slots and follow the energy credits earned from eligible events.

Digital Experience Verdict

ScottishPower provides all the main account-management functions, but Octopus has the more advanced digital ecosystem.

• Best for account basics: Tie.
• Best for live energy information: Octopus Energy.
• Best for smart-device integration: Octopus Energy.
• Best for ScottishPower reward tracking: ScottishPower app.

8. Solar Panels and Export Tariffs

Octopus offers several export products for homes with solar panels and batteries.

Outgoing Octopus currently pays a flat 12p per kWh for exported electricity. Prime Outgoing Octopus pays 16p per kWh between 4pm and 7pm and 9p at other times, while Agile Outgoing uses changing day-ahead wholesale rates. Rates and eligibility conditions can change.

ScottishPower offers three Smart Export Guarantee options:

• SmartGen pays 6p per kWh.
• SmartGen Premium pays 12p per kWh to eligible ScottishPower electricity customers.
• SmartGen Premium Plus pays 15p per kWh to eligible customers who bought their solar panels or battery from ScottishPower.

These rates are variable and subject to eligibility requirements.

ScottishPower’s Solar Saver import tariff also provides electricity at 20p per kWh between 7pm and 9am for eligible solar customers, giving them 14 discounted hours when their panels may not be generating.

Solar Verdict

• Highest straightforward ScottishPower export rate: 15p/kWh for eligible installation customers.
• Best simple Octopus export rate: 12p/kWh.
• Best for evening battery export: Octopus Prime Outgoing.
• Best range of export strategies: Octopus Energy.
• Best for customers buying a complete ScottishPower solar package: ScottishPower.

9. Business Energy Suitability

Octopus offers standard fixed business contracts and smart products such as Shape Shifters.

Shape Shifters tariffs are intended for businesses able to move electricity use outside expensive periods. Octopus also offers a fully Agile small-business tariff with half-hourly wholesale-linked rates. Its Panel Power export product pays eligible businesses 12p per kWh for exported solar electricity.

ScottishPower offers one-, two- and three-year business contracts. Renewable For Business is backed by 100% renewable electricity generated from ScottishPower’s UK renewable resources.

However, businesses should note that the energy-cost portion is fixed while certain industry costs remain variable and are reviewed quarterly.

Business Energy Verdict

• Best for smart or wholesale-linked business pricing: Octopus Energy.
• Best for solar-exporting businesses: Octopus Energy.
• Best for conventional one- to three-year renewable contracts: ScottishPower.
• Best overall: Depends on whether the business values flexibility or traditional contract structure.

10. Supplier Stability and Customer Fit

Octopus Energy surpassed eight million UK customers in April 2026. Its rapid growth, large customer base and investment in technology and renewable generation make it a major established supplier rather than a small challenger brand.

ScottishPower serves around 4.5 million customers and is part of Iberdrola, one of the world’s largest utility and renewable-energy groups. Its operations include retail supply, electricity networks and renewable generation.

Both companies have substantial financial and operational backing. Supplier stability should not be the deciding factor between them.

Octopus Energy Is Better For:

• Customers wanting Tracker, Agile or other flexible tariffs.
• EV drivers want a longer and cheaper overnight window.
• Homes with heat pumps, solar panels or batteries.
• Customers who value live usage data and smart-device integration.
• Customers prioritising stronger independent service ratings.
• Businesses are able to move consumption to cheaper periods.

ScottishPower Is Better For:

• Customers wanting green tariffs backed by the supplier’s own wind farms.
• Households attracted to Power Saver’s chosen discounted periods.
• Compatible EV drivers interested in EV Optimise.
• Solar customers purchasing panels or batteries from ScottishPower.
• Businesses prefer structured one-, two- or three-year contracts.
• Customers wanting renewable energy and home-service products from one supplier.

Octopus Energy vs ScottishPower: Pros and Cons

Before making your decision, it’s worth comparing the key advantages and disadvantages of both energy suppliers.

Octopus Energy Pros

• Extensive smart-tariff range.
• Strong EV charging product.
• Better Citizens Advice customer-service rating.
• Advanced app and live energy-use tools.
• Broad solar and battery export options.
• No exit fee on Tracker and Agile.
• More than eight million UK customers.

Octopus Energy Cons

• Tracker and Agile prices can become expensive during wholesale-market spikes.
• Some current fixed tariffs carry exit fees.
• Advanced products require smart meters and compatible technology.
• Customers unwilling to shift usage may receive limited value from smart tariffs.

ScottishPower Pros

• Green tariffs connected to its own wind farms.
• Power Saver offers selectable discounted periods.
• EV Saver and EV Optimise provide two charging approaches.
• Up to 15p/kWh solar export for eligible installation customers.
• Customers can generally change to another ScottishPower tariff without an internal exit fee.
• Backed by Iberdrola.

ScottishPower Cons

• Lower overall Citizens Advice service score.
• Smaller smart-tariff range than Octopus.
• EV Saver has a shorter and slightly more expensive off-peak window.
• Some fixed and tracker products carry £50-per-fuel exit fees.
• Certain smart products cannot be combined.

Octopus Energy vs ScottishPower: Which Is Cheaper?

Octopus Energy is more likely to suit customers seeking flexible ways to reduce their costs. Tracker can benefit customers when wholesale prices fall, Agile can reward people who avoid expensive hours, and Intelligent Octopus Go offers a competitive EV rate.

However, these tariffs can expose customers to greater price variation. Agile and Tracker are not automatically cheaper every month.

ScottishPower may be cheaper where its personalised fixed quote beats Octopus or where a customer can make effective use of Power Saver, Solar Saver or EV Optimise.

For a fair comparison, use the same:

• Postcode and region.
• Annual electricity and gas consumption.
• Payment method.
• Meter type.
• Contract duration.
• Peak and off-peak usage.
• Exit fees and standing charges.

Final Verdict: Octopus Energy or ScottishPower?

Octopus Energy is the stronger overall supplier for most digitally engaged households. It offers more smart tariffs, better EV pricing, stronger solar and battery integration, superior live usage tools and a considerably better current Citizens Advice customer-service rating.

ScottishPower remains a good alternative for customers who want wind-backed green electricity, selected weekly discounts through Power Saver, or a solar installation and export package from one established supplier.

Overall Winners

• Best for pricing flexibility: Octopus Energy.
• Best for fixed tariffs: Compare live quotes.
• Best for smart tariffs: Octopus Energy.
• Best for EV charging: Octopus Energy.
• Best for renewable energy: Tie.
• Best for customer service: Octopus Energy.
• Best for digital tools: Octopus Energy.
• Best for solar export: Depends on equipment and export timing.
• Best for flexible businesses: Octopus Energy.
• Best for traditional renewable business contracts: ScottishPower.
• Best overall supplier: Octopus Energy.
• Best specialist alternative: ScottishPower for wind-focused and bundled home-energy customers.

For more options, compare Octopus Energy vs OVO Energy, OVO Energy vs Ecotricity, and Octopus Energy vs Good Energy.

Frequently Asked Questions

Still have questions? Here are quick answers to some of the most common questions about Octopus Energy vs ScottishPower, including pricing, customer service, EV tariffs, and switching.