Solar panel installation is one of the most practical ways to cut household electricity bills and carbon emissions. This guide walks you through each stage, from the first free survey to the final MCS certificate. You will know what to expect, so you can make a clear choice.
How solar panels work
Solar panels turn daylight into power using photovoltaic cells. When sunlight hits the cells, it creates a flow of direct current (DC) electricity. An inverter then changes that DC into alternating current (AC), which runs your home appliances.
You can send any surplus to the grid and earn a payment through the Smart Export Guarantee (SEG). Because the system is silent and has no moving parts, it needs little upkeep once it is up and running.
What a typical domestic solar panel installation involves
A professional fitting follows a clear sequence. Knowing each step helps you plan and avoids surprises.
- Free, no‑obligation survey – a qualified assessor visits your property (or carries out a detailed remote assessment) to check roof orientation, shading, structural suitability and your current electricity usage.
- System design – based on the survey data, the installer creates a layout showing panel numbers, inverter size and, if you choose, battery storage capacity.
- Quotation and agreement – you receive a detailed quote covering equipment, labour, scaffolding, testing and the MCS certificate. No work begins until you sign.
- Scaffolding and safety setup – safe access to the roof is erected, usually the day before the main fitting work.
- Panel mounting – rails are fixed to the roof structure, then the panels are clamped onto the rails.
- Inverter installation – the inverter is mounted in a convenient, ventilated location (often the loft or garage) and wired to the panel array.
- Battery connection (optional) – if you have opted for storage, the battery is linked to the inverter and your home's consumer unit.
- Electrical testing and commissioning – the whole system is tested for safety, performance and compliance with the latest wiring regulations.
- MCS certificate issuance – the installer provides the Microgeneration Certification Scheme (MCS) certificate, which you need for SEG registration and most grant schemes.
- Handover and monitoring setup – you receive a user guide, login details for any monitoring portal, and a point of contact for future support.
How long does solar installation take?
Once the survey ends and you approve the design, most home installations take one to three days on site. The exact time depends on roof complexity, whether you need scaffolding, and if you add a battery. The survey, design and quote stages usually add a further week or two. Still, the work on your roof is typically done within a long weekend.
What happens on installation day
On the first day, the scaffolding crew arrives early. They set up safe access and protect any landscaping. The fitting team then mounts the rails, secures the panels and runs the DC cabling down to the inverter location.
The second day (or later the same day for smaller systems) is for the inverter, any battery and the final wiring. The last visit includes a full commissioning test and a tour of the monitoring app. You also get the MCS certificate and warranty papers at handover.
Do I need planning permission?
In most cases, domestic solar panel installation counts as permitted development and needs no planning application. Still, exceptions include listed buildings, homes in conservation areas with specific restrictions, and installs that stick out well beyond the roof plane. Your installer will confirm the position for your address during the survey.
Why MCS‑certified installers matter
The Microgeneration Certification Scheme (MCS) is the industry quality mark. Only MCS‑certified installers can issue the certificate you need to register for the Smart Export Guarantee. It also opens the door to most grant routes such as ECO4.
Certified firms follow strict standards for design, workmanship and consumer protection. Therefore, Maya Solar only refers you to MCS‑certified partners. You can trust that each quote meets those requirements.
DIY solar installation – is it possible?
Technically you could buy panels and fit them yourself. Still, DIY solar panel installation is strongly discouraged for the four reasons below. For peace of mind, safety and financial eligibility, the recommended route is a professional, MCS‑certified installer.
- Safety – working at height and handling live DC wiring carries serious risk without professional training and equipment.
- Compliance – a self‑installed system cannot receive an MCS certificate, so you would be unable to claim SEG payments or most grants.
- Performance – incorrect orientation, shading analysis or inverter sizing can dramatically reduce output, lengthening payback.
- Warranty – many manufacturers void warranties if the system is not installed by an accredited professional.
How much is solar installation?
Costs vary with system size, roof type and whether you add storage. The list below is a guide for a typical three‑bedroom home in 2026.
- 4 kWp panel‑only system – roughly £6,000–£8,000 fully installed.
- 4 kWp system with battery storage – typically £10,000–£14,000 installed.
These figures include scaffolding, inverter, testing and the MCS certificate. The government currently applies 0% VAT on domestic solar panel and battery installations until 31 March 2027. This can save you roughly £1,000–£3,000 on a typical quote. Prices come before any grant funding applies.
Payback and long‑term value
Most UK homes see their panels pay for themselves in roughly 10–15 years. How long depends on how much electricity you use in daylight hours and the SEG rate you secure. Panels are usually guaranteed for 25 years and keep producing well beyond that, losing under 1% output per year.
Over the system's lifetime, the total power made can far exceed the first outlay. This is especially true with battery storage, because it lets you use more of your own power.
Grants, SEG and the 0% VAT window
Three incentives are worth knowing about. All of them need an MCS certificate, so it pays to choose a certified installer.
- Smart Export Guarantee (SEG) – licensed suppliers must pay you for exported electricity. Standard tariffs range from about 1p to 15p per kWh, with a market average around 13p/kWh. Some installer‑exclusive or time‑of‑use deals can pay more.
- ECO4 – can fund 100% of a solar installation (typically worth £5,000–£8,000) for households on certain means‑tested benefits with an EPC rating of D‑G. The scheme runs to the end of 2026 and is accessed via energy suppliers or Local Authority Flexibility routes.
- 0% VAT – applies to both panel‑only and panel‑plus‑battery installations until 31 March 2027, delivering a meaningful upfront saving.
What to expect from a free survey
Maya Solar's free survey is low‑pressure and informative. Your assessor will do the following.
- Measure roof dimensions, pitch and orientation.
- Identify any shading from trees, chimneys or neighbouring buildings.
- Review your recent electricity bills to understand daytime usage patterns.
- Discuss whether battery storage makes sense for your lifestyle.
- Explain the likely system size, expected generation, and a ball‑park cost range.
- Outline the next steps, including how to secure an MCS‑certified installer and any grant eligibility.
You get a written summary and a no‑obligation quote within a few days. Because there is no commitment to proceed, you can ask as many questions as you like.
Next steps – get your free, no‑obligation quote
If you are ready to see how solar could work for your home, request a free survey. Fill in the short online form on the Maya Solar website with your address and a convenient time for a visit.
A certified installer will contact you and arrange the survey. They will then give you a clear, itemised quote, all without any pressure to buy. Although the survey is free, it gives you the facts you need to decide whether solar is right for you. It also puts you on the path to lower bills and a greener home.