Sunsave Plus is everything you need to go solar, delivered as a 20-year subscription. It includes the design, supply, financing and install of a system tailored to your home, plus ongoing monitoring, maintenance and insurance through the Sunsave Guarantee for the length of your subscription. Learn more about Sunsave Plus.

Sunsave Plus is a good option for people who want to save on their energy bills with solar, without making a large upfront payment for a system. It also offers security and peace of mind with the Sunsave Guarantee, so you don’t get any surprise costs.

You need to be a homeowner in England or Wales to get Sunsave Plus.

Yes. Sunsave Plus isn’t a lease or rental — you own your system from the day it’s installed.

We only use best-in-class kit, and we’re fully accredited by MCS and other relevant industry bodies. The independent experts at Which? have also put us to the test and endorsed Sunsave as a Trusted Trader, demonstrating that we’re one of the highest quality solar installers around.

That said, sometimes things go wrong. And if that happens, with Sunsave Plus you’re covered by the Sunsave Guarantee for the length of your subscription. This includes 24/7 remote monitoring, downtime cover, a free battery replacement, and any parts and repairs that are out of warranty. Your system will also be insured by Aviva against damage, fire and theft.

What’s included

• 25-year manufacturer’s warranty on panels
• 10-year manufacturer’s warranty on battery and inverter
• one free out-of-warranty battery & inverter replacement
• 24/7 system monitoring so we can see if something’s not working as expected
• troubleshooting and support with any warranty claims
• insurance for damage, fire, theft, and any financial losses if the system isn’t working for a prolonged period of time

What’s not included

• panel cleaning
• repair or replacement of bird netting

Even though Sunsave Plus starts as a 20-year subscription, you are free to make a full repayment to end your contract whenever you want - without any fees or penalties.

• For full settlements, the remaining balance would just be the outstanding credit amount (i.e. not any interest or monitoring & maintenance fees you would have incurred had your subscription continued).
• For partial settlements, any repayment you make would be deducted from the outstanding credit amount. The term of your contract with Sunsave will be reduced but your fixed monthly fees will stay the same. This means you’d accrue interest on a smaller remaining balance, and pay less overall.

If you end your subscription early, you’ll no longer be covered by the Sunsave Guarantee.

We know moving home can be stressful, so you’ll have a dedicated Sunsave customer service representative to help you at every step.

We can’t move your Sunsave system, as it’s tailored to your home. But with Sunsave Plus, we have two options that make it simple for you to move.

1. Transfer your subscription to the new homeowner

You can transfer your system to the new homeowner*, in the same way that you transfer a utility contract.

In countries where solar subscriptions have taken off (such as the US and Germany), passing on the contract has proven to be very popular. For example, Sunrun, the US solar subscription provider, sees 98% of their customers who move home during their subscription successfully transfer their contract to the new homebuyer.

*Subject to acceptance. The new homeowner will need to pass the same eligibility requirements as any new Sunsave Plus customer.

2. Pay off the remaining balance

Alternatively, you can include the value of your solar & battery system in the sale price of your home and make a full early repayment either before the sale or using the proceeds from the sale. There are no additional charges or hidden fees for this and you do not need to repay any future interest or monitoring and maintenance fees.

• Research from WWF & Scottish Power found that solar increases the value of a house by 0.5% to 2.0%. This study excludes the impact of batteries which would likely increase value further.
• A Rightmove study found that increasing a home’s EPC rating raised the value of that home. Adding solar to a home typically increases an EPC by one level, and the study found that increasing EPC from D to C resulted in an average increase of 3%, or £11,157.

Your Sunsave Plus application can have up to two applicants.

• The lead applicant must be an owner of the property
• At least one applicant must be between 18 and 60 years old
• Both applicants must be UK residents

We’ve taken careful steps to ensure Sunsave is set up for the long term.

• We’ve raised substantial investment from established venture capital funds that have previously invested in Google, Airbnb and PayPal, and we also have backing from successful investors like industry leader Bill Nussey, author of Freeing Energy, and Stuart Rose, Chairman of Asda.
• We’re authorised and regulated by the FCA to provide solar panels, batteries, installation, insurance, monitoring and maintenance through a monthly subscription.
• We’ve achieved full recognition from all the industry-leading accreditation schemes, including the MCS, HIES, EVPS, and Trustmark. We’re fully approved by the Financial Conduct Authority, and we’re also a Which? Trusted Trader.
• We’re government backed. In May 2023, we received a £200,000 grant from the UK government via its Green Home Finance Accelerator initiative to fund the research and development of our solar subscription. In January 2024, this was followed up by a further £2 million to launch Sunsave Plus.
• We’ve hired a talented team with decades of experience in the solar and energy industries.

As a safety net, the HIES consumer protection scheme provides deposit and payment insurance, as well as an insurance-backed guarantee that protects you in case Sunsave stops trading.

With a solar and battery system, you’ll be buying less electricity from the grid. You can also sell any excess electricity to the grid (earning on average £350 per year). Combining these savings, your annual electricity bills can fall by 103%, on average, which means you across a year you actually earn more than you spend.

This might sound too good to be true, but it’s all because of the high performance of modern solar panels and storage batteries, as well as export income. The panels will dramatically reduce the amount of electricity you buy from the grid, and you’ll also earn money by selling your unused electricity to the grid. Octopus Energy's export tariffs have transformed the financial benefit of solar panels, and it's easy to sign up for one.

This 103% figure is based on a household experiencing average UK irradiance with a 4.4kWp solar panel system and a 5.2kWh battery, using 3,500kWh of electricity each year and signed up to the Intelligent Octopus Flux export tariff.

If you sign up for Sunsave Plus, your savings will work a bit differently. But you could have more money in your pocket each month, despite the monthly payments. Find out more about savings with Sunsave Plus.

These figures are all estimates and every household is unique. Your exact savings with a solar and battery system will depend on a number of factors, including how suitable your roof is, where your property’s located, and your annual electricity consumption.

For a better estimate of how much you could save, try our online savings calculator and book a call with one of our friendly solar experts.

Yes. Whenever you generate more electricity than you need (or can fit in your battery), you can sell it to the grid through a scheme called the Smart Export Guarantee (SEG).

All UK energy suppliers with over 150,000 customers have to offer a price to households that export renewably-sourced electricity. Smaller energy suppliers can opt in, too.

Your export tariff provider doesn’t have to be the same as your energy provider, but many energy suppliers offer better rates to customers.

Adding a battery to a solar panel system means you can store excess electricity that you would otherwise have exported to the grid.

If you’re out during the day and your solar panels are producing electricity, this goes into your battery to use in the evening. Most solar systems have a battery sized according to your property, so it should provide enough electricity for the night before it needs recharging.

A solar battery also works well with time of use tariffs. It allows you to buy and store cheap night-time grid electricity to use later in the day when electricity would normally be much more expensive.

We’ll make sure you are on the best tariff to maximise your solar savings day and night. So you can sit back and enjoy the extra cash.

We’re a Which? Trusted Trader and are fully accredited by MCS, EPVS, HIES, NAPIT and TrustMark. Our dedicated in-house team has decades of solar experience and manages your solar installation from start to finish, working exclusively with MCS-accredited subcontractors to ensure your system is built to last. We handle everything from design, DNO application, survey, supply and install, monitoring and financing — so you don’t need to lift a finger.

We’re fully accredited by MCS, EPVS, HIES, NAPIT and TrustMark. Find out more about what these accreditations mean below.

The Microgeneration Certification Scheme (MCS)

MCS certifies, assures quality and provides consumer protection for microgeneration installations and installers, including solar PV. We’re a member of MCS, so you can be assured your solar PV system will be installed to a high standard and built to last. With your MCS certificate, you’re eligible to sign up to an SEG (Smart Export Guarantee) tariff with an energy supplier to make money from your excess electricity.

Energy Performance Validation Scheme Gold (EPVS Gold)

EPVS is a certification standard that ensures solar PV and battery energy-saving estimates are accurate by validating installers’ processes. Our EPVS Gold rating means we’re best in class for the accuracy of our savings calculations. So when you choose Sunsave, you’ll know that an independent third party has validated the individual energy-saving estimates in your proposal.

The Home Insulation and Energy Systems Quality Assured Contractors Scheme (HIES)

HIES is CTSI-approved Consumer Code that gives you protection for renewable energy installations, including solar photovoltaic panels, batteries and inverters. When you install solar with Sunsave, HIES protects any deposit you’ve made to us in the event that we can’t install your solar system. Through their insurance-backed guarantee, they ensure your workmanship guarantee is upheld, in the unlikely event that we can’t. HIES also provides a fair and independent arbitration mechanism if you believe that we haven’t delivered the installation experience you expected.

TrustMark

TrustMark is the Government Endorsed Quality Scheme that covers work you choose to have carried out in or around your home. We’ve been vetted to meet TrustMark’s high standards and have made a commitment to provide good customer service.

Sunsave Standard is our traditional solar & battery solution, with upfront payment. Our solar experts will create a bespoke design tailored to your household, taking into account a whole range of factors including the size of your roof, your annual electricity consumption, and your budget. We use premium kit, and all of our Sunsave Standard systems come with a two-year workmanship warranty. From site survey to scaffolding, we’ll take care of everything. Once we’ve started, your installation will be complete in a few days.

We typically take a 15% deposit when you sign the contract (you can pay by bank transfer or card), and the remainder after we’ve installed your system. Learn more about Sunsave Standard.