Octopus Energy Solar Panels Review 2026

A well-integrated package can still make sense without the headline tariff — but it changes the maths. This review looks at what Octopus solar panels actually cost, which panels they fit, what export rates you can get right now, and whether the package holds up against dedicated solar installers like Project Solar and local MCS-certified companies.

Who Are Octopus Energy Solar?

Octopus Energy was founded in 2015 and quickly grew into the UK's largest energy supplier. They entered the solar installation market to offer an end-to-end renewable energy service: install the panels, supply the energy tariff, and manage the export payments all under one roof.

Unlike some energy suppliers who white-label solar installations through third parties, Octopus uses in-house MCS-certified installation teams. This gives them direct control over quality and simplifies the customer experience — one company handles everything from quote to ongoing support.

Their solar offering includes panels, battery storage (Fox ESS, Enphase, or Tesla Powerwall 3), and integration with their smart tariffs. The real value proposition is the ecosystem: solar panels feeding into a battery, managed by the Octopus app, earning money through export payments — currently Outgoing Octopus for new customers, with the premium Flux tariffs paused.

How Much Do Octopus Solar Panels Cost?

For context, the MCS national average for a 4 kW system is around £6,744 (January-May 2026 data). Octopus's £6,163 entry price covers a much smaller two-panel system, so compare like-for-like quotes for your roof. The 8-panel-plus-battery package from £8,123 is the more representative benchmark for a typical home.

All residential solar installations qualify for 0% VAT until March 2027.

What Panels Does Octopus Energy Use?

Octopus Energy currently installs JA Solar panels. JA Solar is one of the world's largest panel manufacturers, producing reliable mid-to-high efficiency modules used by installers worldwide.

At ~21.3% efficiency, the JA Solar panels are solid but not the highest-efficiency option on the market. Installers like Project Solar offer panels at 22%+ efficiency. The practical difference on most UK roofs is small — perhaps one extra panel needed to achieve the same output — but it's worth considering if roof space is limited.

The 25-year warranty is standard for the industry and provides adequate coverage. Most modern panels produce 85-90% of their original output after 25 years.

Octopus Flux Tariff — Paused to New Customers

The Octopus Flux tariff is what historically set Octopus apart from other solar installers — a time-of-use tariff designed specifically for homes with solar panels and battery storage. However, Octopus paused both Flux and Intelligent Flux to new customers in March 2026, with no announced reopening date. Existing Flux customers keep their tariff.

That changes the earnings picture. On Flux, some households reported £35-110 per month in summer. At Outgoing's 12p flat rate — roughly 40% of Flux's peak rate — expect proportionally less: roughly £15-45 per month for a comparable system in the sunnier months, with winter returns lower still.

To export with Octopus, you need:

• An MCS-certified solar installation (a battery — Fox ESS, Enphase, or Tesla Powerwall 3 through Octopus — helps self-consumption, but adds nothing to a flat export rate)
• A smart meter (SMETS2, or a compatible SMETS1 such as Secure-branded meters)
• An Octopus Energy account (Outgoing is open to any Octopus customer, not just those who bought Octopus solar)

That last point is important: you don't need to buy your solar panels from Octopus to use their export tariffs. Any MCS-certified installation qualifies for Outgoing Octopus. If you're chasing a higher flat rate, accessible alternatives reach 15p (EDF) and 15.1p (British Gas) for their import customers.

For a full comparison of export rates, see our best SEG tariffs guide.

Battery Storage

Octopus Energy offers three tiers of battery storage to pair with their solar installations:

A battery remains valuable for maximising self-consumption, but the Flux pause has weakened the export case for new customers: Outgoing Octopus pays a flat 12p/kWh whenever you export, so there's no peak window for a battery to arbitrage. Existing Flux customers can still earn 29.32-32.17p/kWh during peak hours by discharging stored solar.

For a broader look at battery options, see our home battery guide and Tesla Powerwall 3 review.

Installation Process

Octopus Energy's solar installation follows a straightforward process:

1. Online quote: Enter your address and energy usage on the Octopus website
2. Design proposal: Receive a system design based on satellite imagery of your roof
3. Site survey: A technician visits to confirm the design and check your electrics
4. Installation: Typically completed in 1-2 days
5. Commissioning: System testing, MCS registration, and app setup
6. Export tariff activation: Switch to an export tariff through your Octopus account (currently Outgoing Octopus — Flux is paused to new customers)

The end-to-end timeline is typically 4-6 weeks from initial enquiry to switch-on, depending on DNO approval times in your area. This is broadly in line with other national installers.

Customer Reviews

What customers praise

Customers on the legacy Flux tariff consistently highlight it as delivering real savings — though it's closed to new sign-ups. The integration between panels, battery, and the Octopus app receives praise for making energy management simple. The installation teams are generally well-reviewed for professionalism.

What customers flag

• Wait times: High demand means some customers wait months for installation
• Panel choice: Some customers would prefer higher-efficiency panel options
• Customer service: As a large company, getting through to the right support team can take time

Pros and Cons

Octopus Solar vs Competitors

Octopus wins on integration. But with Flux paused to new customers, the export-income argument has weakened: Outgoing's 12p/kWh flat rate sits below the best accessible flat SEG rates (15p at EDF, 15.1p at British Gas). If panel efficiency and warranty length matter more, Project Solar has the edge. Local MCS installers typically beat both on upfront price.

Is Octopus Energy Solar Worth It?

Octopus solar panels are worth considering if you want everything under one roof — panels, battery, and export tariff managed by a single company. The starting price is fair. But the headline Flux tariff is paused to new customers, so export earnings come from Outgoing Octopus at a flat 12p/kWh — decent, but no longer market-leading.

The main trade-off is panel quality. JA Solar panels are reliable but not top-tier. If your roof space is tight or you want the highest output per square metre, look at Project Solar or SunPower-focused installers instead.

One thing worth knowing: you don't need to buy Octopus solar panels to use their export tariffs. If a local installer quotes better on higher-efficiency panels, you could install through them and still take Outgoing Octopus afterwards (Flux remains closed to new sign-ups, with no announced reopening).

Best for

• Homeowners who want a simple, integrated solar + battery + tariff package
• Those who value app-led control of panels, battery, and tariff in one place
• Existing Octopus Energy customers

Look elsewhere if

• You want the highest export rate — Flux is paused and Outgoing pays 12p/kWh, below the 15p-15.1p accessible elsewhere
• You want the highest-efficiency panels available
• You prefer more flexibility on battery and panel brand choice
• You want the lowest upfront cost — local installers are typically cheaper

Frequently Asked Questions

Related Guides

• Project Solar UK Review
• How Much Do Solar Panels Cost in the UK?
• Best Smart Export Guarantee Tariffs
• Best Solar Panels UK 2026
• Tesla Powerwall 3 Review
• Best Home Batteries UK