The Fareham Homeowner's Guide to Solar Grants and ROI in 2026

If you're a Fareham homeowner weighing up solar panels this year, timing matters more than you might think. The UK's most generous solar grant scheme, ECO4, now closes on 31 December 2026. The government extended it by nine months from its original March 2026 end date, so the window to secure fully-funded installation is still open, but it is the last one. Let's cut through the noise and look at what's actually available, who qualifies, and whether solar makes financial sense for your home.

What Solar Grants Are Available in Fareham Right Now?

The primary route to funded solar installation is the Energy Company Obligation 4 (ECO4) scheme. This government-backed programme covers up to 100% of installation costs for eligible households, essentially, free solar panels if you meet the criteria. Unlike a council grant, ECO4 is an obligation placed on the big energy suppliers rather than a pot of money handed to each county, so there is no "Hampshire share" to run out: the funding follows the eligible household. (You may see a "£41.4 million for Hampshire" figure quoted elsewhere. That was the Home Upgrade Grant secured by the Portsmouth-led Warmer Homes consortium in 2023, a separate scheme for off-gas homes that closed in March 2025.)

Beyond ECO4, there are two other financial benefits worth noting:

• 0% VAT on solar installations – Since 1 April 2022, the supply and installation of solar panels in residential accommodation (and, since February 2024, battery storage) has been zero-rated for VAT, so if you're paying privately you avoid the 20% VAT you would otherwise pay. The zero rate is legislated to run until 31 March 2027, after which it is due to revert to the 5% reduced rate. (Source: HMRC, VAT Notice 708/6.)
• Smart Export Guarantee (SEG) – This allows you to sell excess electricity back to the grid. While rates vary by supplier, it's a small but steady income stream that adds to your overall return.

There is also a council-delivered route. Fareham Borough Council is a member of the Portsmouth-led consortium delivering the Warm Homes: Local Grant, which the government lists at £34.8 million for the consortium (updated July 2026) and which runs until March 2028. It funds solar panels, insulation and air source heat pumps at no cost to the occupant for low-income households in owner-occupied or privately rented homes with an EPC of D to G, and unlike ECO4 it is open to homes on every fuel type. The catch: demand has been so high that the consortium is not taking new applications at the time of writing (September 2026), with the next release of funding expected in spring 2027, so the practical step is to join the Warmer Homes waiting list now. Fareham Borough Council has also committed to becoming carbon neutral by 2030 through its Climate Emergency Action Plan. (Sources: DESNZ, Warm Homes: Local Grant successful local authorities; Switched On Portsmouth, Warm Homes Local Grant.)

Who Actually Qualifies for ECO4?

Here's the straightforward answer: ECO4 targets low-income households receiving certain benefits. If you're on Universal Credit, Pension Credit, Child Benefit (with income thresholds), or several other qualifying benefits, you're potentially eligible.

There's also a property requirement. If you own your home it needs an Energy Performance Certificate (EPC) rating of D, E, F or G; privately rented homes must be E, F or G. Either way that is the lower end of the scale, which ensures funding goes toward homes that need energy efficiency improvements most urgently. (Source: New Forest District Council, ECO4 criteria.)

Eligibility can feel like a moving target because it varies slightly depending on which energy company administers your grant and your specific circumstances. Your best move? Contact Fareham Borough Council's housing team or check with an MCS-accredited installer who can run a quick eligibility check before you go any further.

If you don't qualify for ECO4, don't write off solar entirely. The combination of 0% VAT, SEG payments, and long-term energy savings still makes a strong case for self-funded installation, we'll break down those numbers next.

The Real Numbers: What Does Solar Actually Save You?

Let's talk money, and let's start with what is actually published, because there is no official figure for "the average Fareham energy bill". What exists is Ofgem's price cap. For a typical household paying by direct debit for both gas and electricity it currently sits at £1,663 a year, and from 1 October 2026 it rises by £60 to £1,723 a year. (Source: Ofgem, Energy price cap will rise by 4% from October 2026.)

Two things about that number matter before you do any solar arithmetic with it. First, the cap limits the maximum unit rates and standing charges a supplier can charge. It is not a cap on your bill. What you actually pay is your own consumption multiplied by those rates, so a household using more than the typical amount pays more than the headline figure, and a frugal one pays less.

Second, and this is the point most solar articles skip: that figure covers gas and electricity together. Solar panels generate electricity. They do nothing for the gas you burn on heating and hot water. Ofgem's October update makes the split plain, with gas bills rising 8% while households that use no gas at all see an increase of less than 1%. So the honest question is not what percentage solar takes off "your energy bill". It is how much of your electricity you can generate and use yourself.

That is also why we do not publish a single headline savings figure for a Fareham home. Four things decide it:

• How much of your electricity use happens during daylight hours, when the panels are generating
• The size and orientation of your roof. The Energy Saving Trust puts an east or west facing system at around 15–20% less energy than one facing due south
• Whether you add battery storage, so that generation you cannot use during the day is stored rather than exported at a lower value
• Your household's overall electricity consumption, and what you currently pay per unit for it

For a sense of scale from an independent source rather than an installer, the Energy Saving Trust publishes payback periods for a typical 4.5kWp system, including export payments, at July 2026 fuel prices:

Two things are worth drawing out of that table. The further south you are, the shorter the payback, and the Energy Saving Trust is explicit that areas further south get more direct sunlight, which is the one variable Fareham has firmly in its favour: it sits further south than every location listed. And being out of the house during the day costs you far less than people assume, adding at most a year or two, which is what battery storage and daytime appliance timers are there to close.

The same source publishes a case study of a Somerset household whose eighteen panels power their appliances, a heat pump and an electric car charger, and who put the reduction in their electricity costs at around £750 a year. That is a home using a great deal of its own generation rather than exporting it, which is precisely the point. (Source: Energy Saving Trust, Solar panels: costs, savings and benefits explained.)

If you're paying for installation out of pocket, the payback period depends on three things: the system size your roof can take, how much of the generation you use in the home rather than export, and what you pay per unit for grid electricity. That is why we give you the figure from a site survey and your actual bills rather than a national average. You can get a first estimate in a couple of minutes with our solar panel savings calculator, or request a quote for a surveyed figure. Once the system has paid for itself the generation is free from then on, and the Energy Saving Trust puts panel life at 25 years or more, though you should budget for replacing the inverter after around 12 years.

What About the Smart Export Guarantee?

The SEG is often overlooked, but it adds another layer to your return on investment. Any electricity your panels generate that you don't use immediately gets exported back to the National Grid, and you get paid for it.

There is no set rate, and that is the most useful thing to know about it. The only requirement is that the tariff must always be greater than zero; beyond that, suppliers decide what to offer. Tariffs are either fixed, paying a set rate per kWh for the length of the contract, or variable, moving with market demand but never falling below zero. Every licensed energy company with 150,000 or more customers must provide at least one SEG tariff, and smaller suppliers can offer one if they choose.

Two practical points follow. Your SEG supplier does not have to be the company that supplies your electricity, so it is worth comparing several, although you can only take SEG payments from one supplier at a time. And to qualify at all, both the technology and the installer must be certified under the Microgeneration Certification Scheme (MCS) or equivalent, and you need a registered smart meter that records what you export. DES Renewable Energy is MCS certified, so that condition is met from the outset.

As for what it is worth, the Energy Saving Trust's working figure is around 12p for every unit you don't use yourself — and it makes the comparison that actually matters, which is that you would normally buy electricity for more than twice that per unit. Export income is a top-up, not the plan. A unit used in the house as it is generated is worth more to you than the same unit sold, which is why we size a system around your daytime demand rather than around the area of your roof. (Source: Energy Saving Trust, Smart Export Guarantee explained.)

The Installation Process: What to Expect

Once you've secured funding (or decided to self-fund), the actual installation is surprisingly quick. Here's the typical timeline:

1. Initial survey and quote – A qualified installer visits your property to assess roof suitability, shading, and system size. This takes 1–2 hours.
2. Grant approval (if applicable) – ECO4 applications usually take 2–4 weeks to process.
3. Scheduling installation – From application to installation, expect 4–8 weeks total.
4. Installation day – The physical installation takes 1–2 days for most residential properties.

Most Fareham homes fall under permitted development rights, meaning you won't need planning permission. The exceptions? Listed buildings or properties within conservation areas, you'll need approval from Fareham Borough Council in those cases.

Make sure whoever installs your system is MCS-accredited. This certification ensures quality workmanship, guarantees eligibility for SEG payments, and is required for any grant-funded work. It's non-negotiable.

Why Fareham Works Well for Solar

You might be thinking, "This is Hampshire, not southern Spain, is there actually enough sun?" Fair question. The answer is yes, absolutely.

Fareham benefits from stable weather patterns and good sunshine hours relative to the UK average. You don't need blazing heat for solar panels to work effectively, they generate electricity from daylight, not temperature. In fact, panels operate more efficiently in cooler conditions.

The area's housing stock is also ideal for solar. Whether you're in a Victorian terrace, a modern development, a council estate, or a suburban semi-detached, there's usually sufficient roof space and orientation to make solar viable. South-facing roofs are optimal, but east and west orientations still deliver strong performance.

The combination of Fareham's climate, housing types, and current energy costs creates a genuinely compelling case for solar, especially if you're eligible for grant funding.

What Happens When ECO4 Ends in December 2026?

That question now has a published answer rather than a guess. In its response to the ECO4 extension consultation, the government confirmed there will be no successor supplier obligation after ECO4. The nine-month extension exists to give suppliers time to meet their existing targets and to remediate non-compliant installations, and no carry-over mechanism was created precisely because there is nothing to carry over into. ECO4's sister scheme, the Great British Insulation Scheme, closed as planned on 31 March 2026.

Support is instead moving to grant funding through the Warm Homes Plan, which the November 2025 Budget took to just under £15 billion of capital investment, including £1.5 billion of additional grant funding directed at upgrading low-income households. What that will mean for solar specifically, and how Fareham households will apply, has not been published yet, so the practical position is unchanged: the certainty sits with the scheme that already exists. (Source: DESNZ, Extending the ECO4 end date: government response.)

If you're eligible for ECO4, acting now gives you certainty. Waiting to see what comes next is a gamble that could cost you thousands in installation costs you'd otherwise avoid.

If you're not eligible, the financial case for solar remains solid even without grants. Energy prices aren't trending downward, and solar technology continues to improve in efficiency while installation costs gradually decrease. The payback period is longer without funding, yes: but the 25-year-or-more operational lifespan of panels means you're still looking at significant cumulative savings.

Your Next Steps

Here's what to do if you're seriously considering solar for your Fareham home:

If you might qualify for ECO4:

1. Check your benefit status and current EPC rating
2. Contact an MCS-accredited installer for an eligibility assessment
3. Get quotes from multiple installers (even grant-funded work varies in quality)
4. Move quickly: ECO4 closes on 31 December 2026, and applications take 2–4 weeks to process

If you're self-funding:

1. Get at least three quotes from MCS-accredited installers
2. Ask about system size, panel brands, and realistic savings estimates
3. Clarify warranty terms and aftercare support
4. Factor in SEG payments when calculating ROI

Solar isn't the right move for every home, but if your roof is suitable and your finances align, the combination of immediate grant funding (if eligible), long-term savings, and environmental impact makes this a rare opportunity where individual benefit and collective good actually overlap.

Want to explore whether solar works for your specific property? Get in touch with our team for a no-obligation site survey. We'll give you straight answers about system size, realistic savings, and whether your home is a good candidate: no pressure, just facts.