Questions, answered plainly

We take your details once and pass them to the three most suitable MCS-certified installers — suitable meaning certified for what you asked about and covering your postcode. They contact you and quote you directly, so you compare three real prices for the same job. We do not fit anything ourselves.

Nothing. Installers pay us a fee when we pass on an enquiry. You are never charged and you are under no obligation to accept any quote you receive.

Up to three. We tell each of them that the enquiry is shared with two others, so nobody contacts you believing they have you exclusively.

Usually within two working days, and often the same day. If nobody has contacted you after two working days, email info@comparegreen.co.uk and we will chase it.

Yes — panels on their own, a battery on its own, or both quoted as one job. The first question in the form is which of those you are after, and we only pass your details to installers certified for it.

Because these two go together on the same roof, on the same day, under the same certification body, and a battery has its own MCS scope and, from 15 October 2026, its own chapter in the UK wiring regulations. Sites that cover six technologies at once treat each of them as an add-on to the others. We would rather do fewer things and check them properly.

Up to three MCS-certified installers who cover your postcode, and nobody else. We do not sell your details to brokers, energy suppliers or marketing lists.

To confirm the number works and belongs to you. It stops installers being sent dead or mistyped numbers, and it means you will not be contacted because somebody else entered your number by accident.

Yes. Email info@comparegreen.co.uk with the postcode and phone number you used. We delete our record and tell any installer we already passed it to. We will not ask you to justify the request.

Your details are kept but marked unverified, and they are not passed to installers as a verified enquiry. You can ask us to delete them in the same way.

Yes. We store the exact wording you agreed to, the version of that wording, and the time and IP address of the submission, so it is clear what you agreed to and when.

Because it tells an installer roughly how much roof there is to work with and whether the job will need scaffolding, both of which change the quote. It is one tap, and it is only asked if you are enquiring about panels.

"I am not sure" is one of the answers, and choosing it does not hold anything up. Installers check the aspect from aerial imagery before they visit, so an honest unknown is more useful to them than a guess.

Not for roof panels, no. The roof of a flat or maisonette is normally the freeholder's rather than yours, so an installer cannot quote without their consent. A battery is different — it goes inside your own property — and the form will offer you that instead rather than turning you away.

That is a question for the installers quoting you, and the answer depends on your roof, your tariff and your budget. What we can say is that asking for both in one quote means one survey, one set of scaffolding and one company responsible for making the two halves work together. You are free to ask for panels alone and add a battery later.

Most domestic roof panels fall under permitted development, but there are real exceptions — listed buildings, conservation areas, and flat roofs among them. Your installer will tell you where you stand, and it is a fair question to ask on the first call.

In most cases yes. It is usually a one-day job. Depending on your existing inverter, the installer will either add a battery with its own inverter or replace the existing one with a hybrid. That is one of the things a site visit determines.

Yes. A standalone battery charges from the grid, typically on an off-peak tariff. Whether that makes financial sense depends entirely on your tariff and how you use electricity, which is a question for the installers quoting you.

Usually a garage, a ground-floor utility or plant room, an outbuilding, or an external wall in a weatherproof enclosure. It has to be somewhere accessible and ventilated that can be isolated safely. BS 7671 Chapter 57 rules out lofts and escape routes such as hallways, stairways and landings, so "we will put it in the loft" is no longer an answer you should accept. On size, a common 9.5 kWh unit is 760mm high, 480mm wide and 223mm deep and weighs 72kg — about a small filing cabinet, wall or floor mounted. Your installer confirms the location at the survey, and it is worth asking why they have chosen it. More on Chapter 57.

It depends on capacity, on your existing equipment and on where the battery goes. We do not publish a price because any figure we gave you without seeing your property would be a guess, and you would judge the real quotes against it.

We will not tell you, because we cannot know. Savings depend on your tariff, your consumption pattern, your export arrangement and the size of the system. Treat any company that gives you a confident savings figure before seeing your property with caution — the ASA has repeatedly ruled against advertisers for exactly this.

Domestic solar panels and battery storage both currently qualify for 0% VAT as energy-saving materials. HMRC has confirmed the relief runs until 31 March 2027, after which the rate returns to 5%.

They must hold MCS certification for whatever they are being asked to quote. Those are separate scopes: solar PV certification does not cover battery storage and battery certification does not cover solar PV, so an installer quoting for both needs both. Anyone fitting a battery must also confirm they work to BS 7671:2018+A4:2026, including Chapter 57 on stationary secondary battery installations. We speak to every installer directly before they join the panel. There is no self-service sign-up, and we are not a directory that lists whoever registers.

A chapter added to the UK wiring regulations in Amendment 4, published on 15 April 2026, covering the installation of stationary secondary batteries. It becomes mandatory for every new UK battery installation on 15 October 2026.

No, and neither can any comparison site. Your contract is with the installer you choose. Their MCS certification carries its own consumer protections, and you should read the warranty terms in the quote before signing.

Email info@comparegreen.co.uk with your MCS certificate number and the postcode areas you cover. We speak to every installer before they join, and we keep the network deliberately small because each enquiry is shared with no more than three of you.