Octopus vs E.ON Solar Tariffs: Which Is Best for Your Home?
If you’re researching solar panels or battery storage, you’ll quickly discover that choosing the right tariff can have a surprisingly big impact on your savings.
In fact, once your solar system is installed, the tariff you choose can often make the difference between a system that performs well and one that delivers the maximum possible return.
The challenge is that there are now more solar-friendly tariffs available than ever before. Octopus Energy offers a range of specialist import and export tariffs, while E.ON has introduced new AI-driven smart energy products designed to automate much of the process.
For homeowners, that creates an obvious question:
Which one is actually best?
The answer depends on your home, your battery, your electricity usage and how involved you want to be in managing your energy.
AT JD Allen Solar, we’ve been installing solar panel systems and aligning them with available smart tariffs since 2020. In this guide, we’ll compare the main solar tariffs currently available from Octopus and E.ON, explain how they work, and help you understand which option may be best suited to your circumstances.
Why Your Solar Tariff Matters More Than Most People Realise
Many people assume that once solar panels are installed, the savings take care of themselves.
While solar generation is obviously important, your tariff plays a major role in determining how much value you get from the electricity your system produces.
There are generally three ways a solar household benefits:
- Using solar electricity directly within the home
- Storing excess energy in a battery for later use
- Exporting surplus electricity back to the grid for payment
Modern smart tariffs are increasingly designed to reward flexibility. Instead of simply paying a flat rate for exported electricity, many now encourage homeowners to charge batteries when electricity is cheap and export energy when demand is highest.
For households with battery storage, choosing the right tariff can significantly improve overall returns.
The Different Approaches Taken by Octopus and E.ON
Although both suppliers offer solar-friendly tariffs, their approaches are quite different.
Octopus: Multiple Specialist Tariffs
Octopus has built a range of tariffs aimed at different types of customers.
These include:
- Octopus Flux
- Intelligent Octopus Flux
- Octopus Go
- Intelligent Octopus Go
- Outgoing Octopus
Each tariff has a specific purpose, whether that’s maximising battery storage, rewarding exports or reducing EV charging costs.
The advantage is flexibility. Homeowners can choose a tariff that closely matches their setup and lifestyle.
The downside is that understanding the differences can take some research.
E.ON: Automation and Optimisation
E.ON has taken a slightly different approach.
Its flagship solar tariff, Next Optimise, is designed around automation.
Rather than asking homeowners to manage battery schedules themselves, E.ON uses AI-driven software to determine when batteries should charge, discharge, store energy or export to the grid.
For many homeowners, this creates a more hands-off experience.
The trade-off is that compatibility currently depends on specific battery systems and inverters.
Octopus Flux vs E.ON Next Optimise
For most homeowners with solar panels and battery storage, this is likely to be the most important comparison.
What Is Octopus Flux?
Octopus Flux is designed specifically for homes with solar panels and battery storage.
The tariff combines both import and export pricing and uses different rates throughout the day.
Typically, there is:
- A low overnight import period
- Standard daytime pricing
- A higher-value export period during the evening peak
The idea is simple.
Charge your battery when electricity is cheaper, then use stored energy or export surplus electricity when demand and export values are higher.
One important point is that Flux requires some active management.
In most cases, homeowners need to configure their battery charging and discharging schedules themselves to get the best results.
Pros of Octopus Flux
- Designed specifically for solar and battery systems
- Strong export opportunities during peak demand periods
- Works well for households willing to optimise their system
- No long-term tie-ins
Cons of Octopus Flux
- Requires battery scheduling
- More hands-on than some alternatives
- Savings depend on correct setup and management
If you’d like to learn more about Octopus Flux, we actually wrote and in-depth guide on this specific tariff on our website. Take a read here.
What Is E.ON Next Optimise?
Next Optimise is E.ON’s newest smart energy product designed for homes with solar panels and battery storage.
Rather than relying on fixed charging schedules, the system uses AI-driven forecasting to make decisions automatically.
It analyses:
- Electricity prices
- Predicted solar generation
- Household energy usage
- Battery availability
The system then decides when it makes financial sense to charge, discharge or export energy.
E.ON’s approach is aimed at homeowners who want their battery to work as intelligently as possible without needing constant adjustments.
Pros of E.ON Next Optimise
- Highly automated
- Optimises battery usage continuously
- Allows manual control if desired
- Designed to adapt to changing conditions
Cons of E.ON Next Optimise
- Battery compatibility requirements apply
- Relatively new product
- Requires an initial learning period
- Performance depends on forecasting accuracy
Intelligent Octopus Flux vs E.ON Next Optimise
This is arguably the closest comparison available today.
Both tariffs are designed to remove much of the manual work traditionally associated with battery ownership.
What Intelligent Octopus Flux Does
Intelligent Octopus Flux allows Octopus to take control of battery charging and discharging.
The system automatically charges your battery when electricity is cheaper and exports stored energy when returns are highest.
The goal is to maximise the value of both imported and exported electricity without requiring homeowner intervention.
What E.ON Next Optimise Does
E.ON’s SmartShift technology works in a similar way but places greater emphasis on wholesale price forecasting and AI modelling.
The system continuously recalculates the best strategy based on market conditions, expected solar generation and household demand.
Which Is Better?
There isn’t a universal winner.
Intelligent Octopus Flux may appeal to homeowners who prefer a more established smart tariff with straightforward operating principles.
Next Optimise may appeal to those who like the idea of dynamic optimisation and AI-driven decision making.
In reality, battery compatibility and your preferred level of control may be more important than the differences in tariff structure.
The Best Options for EV Owners
If you own an electric vehicle, the picture changes slightly.
Octopus Go
Octopus Go is primarily designed for EV charging.
It offers a low overnight electricity rate for several hours each night, making it ideal for charging electric vehicles at reduced cost.
Many solar households also use these cheap overnight periods to charge battery storage systems.
Intelligent Octopus Go
Intelligent Octopus Go takes this a step further.
By connecting directly to compatible EVs or chargers, Octopus automatically schedules charging at the most cost-effective times.
For households with both solar panels and an EV, it remains one of the strongest EV-focused tariffs currently available.
E.ON Next Optimise for EV Owners
E.ON’s EV integration is currently strongest for Tesla owners.
The platform can coordinate battery storage, solar generation and vehicle charging within a single optimisation strategy.
Support for additional EV brands is expected to expand over time, but currently remains more limited than Octopus’ EV ecosystem.
Which Company Offers the Better Export Rates?
Export payments remain one of the biggest areas homeowners compare.
Octopus Outgoing
Octopus offers two main export options.
Outgoing Octopus provides a simple fixed export rate for every unit of electricity exported.
This works well for homeowners who value simplicity and predictable returns.
Agile Outgoing takes a different approach.
Export rates change throughout the day based on wholesale market prices.
For households with battery storage and a willingness to actively optimise exports, this can potentially deliver higher returns.
However, it also introduces more complexity.
E.ON Export Tariffs
E.ON offers several Smart Export Guarantee (SEG) tariffs.
These include:
- Premium export tariffs for qualifying E.ON-installed systems
- Exclusive export tariffs for E.ON import customers
- Flexible export tariffs available more widely
- Business export options for commercial users
The best available export rate often depends on eligibility rather than simply choosing the highest headline figure.
For many homeowners, the key consideration is whether they qualify for E.ON’s premium export products.
Which Tariff Suits Different Types of Homeowners?
While everyone wants to maximise savings, not every household uses energy in the same way.
Here’s a simple summary.
Solar Panels Only
A straightforward export tariff such as Outgoing Octopus or an E.ON SEG tariff may be sufficient.
Solar Panels and Battery Storage
Octopus Flux and E.ON Next Optimise are both strong contenders.
Hands-On Users
Homeowners who enjoy optimising settings and understanding tariff structures may prefer Octopus Flux.
Set-and-Forget Users
Intelligent Octopus Flux and E.ON Next Optimise offer far more automation.
EV Owners
Intelligent Octopus Go remains one of the strongest options available for many electric vehicle owners.
Tesla Owners with Solar and Battery Storage
E.ON Next Optimise may be particularly attractive thanks to its Tesla integration.
What We Typically Recommend at JD Allen Solar
One thing we regularly explain to homeowners is that there isn’t a single “best” tariff.
The right choice depends on several factors, including:
- Solar system size
- Battery capacity
- EV ownership
- Daytime electricity usage
- Export potential
- Personal preference for automation
This is one reason why we believe tariff discussions should happen during the design stage rather than after installation.
A well-designed solar and battery system should complement the tariff you’re likely to use.
When we design systems, we don’t just look at panel numbers or battery size. We consider how the system will interact with your energy usage and the tariffs available to you, helping ensure you get the most value from your investment.
Final Verdict: Octopus vs E.ON
Octopus and E.ON both offer compelling options for solar households, but they cater to slightly different priorities.
Octopus may be the better choice if:
- You want a wider range of tariff options
- You own an EV
- You prefer choosing a tariff tailored to your setup
- You want access to Flux or Intelligent Flux
E.ON may be the better choice if:
- You prefer automation
- You have compatible battery equipment
- You like the idea of AI-driven optimisation
- You want a system that actively responds to wholesale energy prices
For most households, however, the biggest savings won’t come from choosing between Octopus and E.ON.
They’ll come from having the right solar system, the right battery size and a tariff that complements the way your home actually uses energy.
The best tariff simply helps unlock the full potential of those investments.
Not sure which tariff would work best with your home?
If you’re considering solar panels or battery storage and want advice tailored to your property and energy usage, get in touch with JD Allen Solar on the button below. We’ll help you understand not just the equipment, but how to get the most from it long after installation.
JD Allen Solar
Deren Tumkaya founded JD Allen Solar in 2019. Frustrated by the impersonal, sales-driven tactics of large firms, he set out to build a company with a strong ethical foundation that puts personal service and local expertise first.
Frequently Asked Questions
Is Octopus Flux better than E.ON Next Optimise?
Neither is universally better. Octopus Flux offers more direct control, while E.ON Next Optimise focuses on AI-driven automation.
Which solar export tariff pays the most?
The highest-paying tariff depends on eligibility, export volume and whether you are comfortable with dynamic export pricing.
Can I change my solar tariff after installation?
Yes. Most homeowners can switch tariffs after installation, provided they meet the supplier’s eligibility requirements.
Do I need a battery for smart solar tariffs?
Not always, but many of the most rewarding smart tariffs are designed specifically for battery owners.
What is the best tariff for solar panels and an electric vehicle?
For many EV owners, Intelligent Octopus Go remains one of the strongest options thanks to its low-cost charging periods and smart charging functionality.
