Doing your own solar can save you money and appeal if you are practical and want to understand your system inside out. But solar sits partly under electrical and grid rules, so there are clear limits on what you can legally do yourself in the UK.
This guide explains exactly where DIY is fine, where you must bring in a qualified electrician, and what to buy to get started. If you would rather have the whole job done for you, you can request a quote at any point.
Can you legally install solar panels yourself in the UK?
You can do a lot of the work yourself, but you cannot legally do all of it. The dividing line is the electrical connection.
Mounting panels on your roof and running the DC cabling is work a competent DIYer can take on. The connection to your consumer unit (fuse board) and the grid must be done by a qualified electrician, because that work falls under Part P of the Building Regulations and the BS 7671 wiring standard. Getting this wrong is dangerous and can invalidate your insurance.
Off-grid versus grid-tied: the key difference
The rules depend on whether your system connects to the grid.
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Grid-tied systems feed into your home's wiring and can export to the grid. These need a qualified electrician for the connection and a notification to your network operator (a G98 notification for most home-sized systems). This is the route for cutting your mains bill.
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Off-grid systems are not connected to the grid at all. They power a cabin, outbuilding, boat or campervan from their own panels and battery. There is far more you can safely do yourself here, because you are not tying into your home's mains or the grid.
What DIY means for MCS, SEG payments and warranties
This is the part that catches people out. To claim payments for the electricity you export under the Smart Export Guarantee (SEG), your system generally needs to be installed by an MCS-certified installer. A pure DIY grid-tied install will usually not qualify for MCS, which means you forfeit SEG income. You should also check that self-installing does not affect your product warranties.
For that reason, many people take a hybrid approach: they buy the components, do the parts they can, and pay a certified installer to design, sign off and connect the system so it stays MCS-eligible. If that appeals, get in touch for a quote and we can advise on the split.
What you need for a DIY solar setup
Whether you go off-grid or hybrid, these are the core parts. We stock all of them.
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Solar panels. The generation itself. Browse the full solar panel range, or order a single solar panel if you only need one or two.
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Inverter. Converts the panels' DC output to usable AC. For a system with a battery, a hybrid inverter handles the panels and battery together.
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Battery storage. Stores your generation for later. See the battery storage range.
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Mounting. Fixes the panels securely to your roof or frame.
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Cabling and isolation. The DC and AC cables, connectors and isolator switches that tie it together safely.
The simplest way to buy: a matched kit
Rather than sourcing every part separately and hoping it is compatible, a kit takes the guesswork out. Our build-a-PV-kit range and ready-made solar kits match the panels, inverter, battery and mounting so everything works together. If you buy regularly or install for others, a trade account gives you trade pricing.
Step-by-step overview of a self-install
This is the shape of a typical install so you know what is involved. It is an overview, not a substitute for the manufacturer instructions and a qualified electrician for the connection.
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Plan and size the system. Work out your energy use, roof space and orientation. Our home solar buyer's guide covers sizing.
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Fit the mounting. Attach the roof hooks or frame and the rails. Our guide to on-roof versus in-roof mounting helps you choose the right system for your roof.
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Mount the panels and run the DC cabling. Secure the panels to the rails and connect them, keeping everything isolated and safe while you work.
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Install the inverter and battery. Position them in a suitable, ventilated location.
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Connect and commission (electrician). The qualified electrician makes the final connection to your consumer unit, tests the system, and handles the DNO notification.
When DIY isn't worth it
DIY makes most sense for off-grid setups and for confident, practical people who want a hybrid approach. It makes less sense if you want the simplest path to lower bills with full SEG income and warranties intact. In that case a professional install is usually the better value, because it keeps you MCS-eligible, is fully certified, and comes with proper sign-off.
If you are not sure which route suits you, ask us for a quote and we will lay out the options.
Frequently asked questions
Can I install solar panels myself in the UK? You can do the mounting and DC work yourself, but the connection to your consumer unit and the grid must be done by a qualified electrician under Part P and BS 7671.
Will DIY affect my export payments? Usually yes. The Smart Export Guarantee generally requires an MCS-certified installation, and a pure DIY grid-tied system will not normally qualify, so you would lose SEG income.
Is off-grid DIY easier than grid-tied? Yes. An off-grid system is not connected to your mains or the grid, so there is much more you can safely do yourself, though all electrical work still needs to be done correctly and safely.
Can I buy just one or two panels? Yes. You can order a single solar panel rather than a full system.
What is the easiest way to make sure my parts are compatible? Buy a matched kit rather than sourcing parts individually, so the panels, inverter, battery and mounting are designed to work together.
Ready to start? Browse our solar kits, or get a quote if you want the connection handled for you.
