Install Solar Panels Cost in the UK
Solar PV can reduce your reliance on the grid and cut household electricity bills, but the cost to install solar panels varies by property, roof type, system size, and whether you add a battery. This guide explains what drives pricing, what to expect from quotes, and how to get the right installer for your home.
- Understand what makes quotes higher or lower
- Compare like-for-like proposals from installers
- Maximise value with smart design and export payments
Get solar installation quotes
Tell us about your property and we’ll help you request quotes from local installers.
What affects the cost of installing solar panels?
There isn’t a single “standard” price for Solar PV. Installers build quotes around your roof, your electricity use, and the equipment required to deliver a safe, compliant installation. The biggest cost drivers are:
1) System size and output
Generally, a larger system uses more panels and may require higher-capacity inverters and additional mounting hardware. Size should be driven by your available roof area, shading, and your household’s typical electricity use—rather than “maxing out” the roof by default.
2) Roof type, access, and scaffolding
Pitched roofs are common for PV. Flats roofs can work too, but may need frames to achieve the right angle and secure ballast. Access constraints, roof height, and safe working requirements often affect the overall installation cost because they can change scaffold needs and time on site.
3) Shading and roof orientation
Trees, chimneys, and nearby buildings can reduce generation. Where shading is unavoidable, an installer may propose alternative layouts or equipment choices to improve performance. The best design is site-specific and should be supported by a generation estimate in your quote.
4) Inverter type and electrical work
Every PV system needs an inverter (or inverters). The model and setup can differ depending on layout complexity and any future expansion plans (such as adding a battery later). Your consumer unit, cabling runs, isolators, and earthing/bonding can also affect labour and materials.
5) Battery storage (optional)
Adding a battery can increase upfront cost but may help you use more of your generated electricity at home. Whether it’s worthwhile depends on your usage patterns, system design, and how you plan to charge/discharge (for example, storing surplus solar for evenings).
6) Monitoring, warranties, and aftercare
Quotes can differ in what’s included: monitoring apps, workmanship warranties, equipment warranties, and post-install support. Always confirm what’s covered, for how long, and what the process is if something fails.
Tip: compare quotes on a like-for-like basis
When installers propose different panel counts or battery sizes, the “headline price” can be misleading. Compare the system specification, predicted annual generation, and what’s included (scaffolding, electrical upgrades, monitoring, and warranties).
What you should expect in a solar panel installation quote
A professional solar quote should help you understand performance, compliance, and total cost—without hidden extras. Look for:
A clear system spec
- Number of panels and total system capacity
- Inverter setup
- Mounting method (roof-integrated vs on-roof where relevant)
- Battery details (if included)
A generation estimate
- Estimated annual electricity generation (kWh)
- Assumptions about orientation and shading
- Export estimate (if you plan to export)
Generation is an estimate—not a guarantee—because weather and usage vary.
Inclusions and exclusions
- Scaffolding and roof works (if needed)
- Electrical upgrades (if needed)
- Metering requirements for export
- Timescales, payment schedule, and aftercare
Do you need an MCS-certified installer?
Many homeowners look for installers accredited under recognised certification schemes so the installation meets expected standards and can support eligibility for certain export arrangements. If exporting is important to you, ask the installer what documentation you’ll receive and what steps are required for your energy supplier.
Note: Requirements can vary by provider and may change over time. Always confirm the current requirements directly with your chosen installer and electricity supplier.
Solar panel running costs and maintenance
Solar PV systems have relatively low day-to-day running costs, but it’s still worth planning for basic upkeep:
Cleaning and inspections
Rain often keeps panels reasonably clean, but heavy soiling (for example near trees or birds) can reduce output. If you arrange cleaning, ensure it’s done safely and without damaging the panels or roof. Some homeowners schedule periodic visual inspections for loose fixings or cable issues.
Inverter and battery considerations
Inverters and batteries are electrical devices with their own warranties and lifecycles. Your quote should explain warranty length and what support is available if a component fails. Make sure the installer provides monitoring access so you can spot unusual drops in generation.
Ask your installer these 7 questions
- What’s included in the price (scaffold, electrics, monitoring, paperwork)?
- What is the estimated annual generation and what assumptions were used?
- How will shading be handled in the design?
- What warranties apply to panels, inverter, battery, and workmanship?
- What happens if you find roof issues on the day of installation?
- Can the system be expanded later (extra panels/battery/EV charger)?
- What are the next steps for export payments and metering?
Will solar panels save you money in the UK?
Savings depend on how much of your solar electricity you can use at home (self-consumption), how much you export, and what you currently pay for electricity. As a rule of thumb, households that use more power during daylight hours tend to benefit more—unless a battery is added to shift solar energy to evenings.
Export payments (SEG)
You may be able to receive payments for exporting surplus electricity through the Smart Export Guarantee (SEG). Rates and terms vary by supplier and change over time, so it’s best to compare options directly with suppliers and check the current eligibility and metering requirements.
We don’t publish supplier-specific export rates on this page because they vary by region and can change frequently.
Boost your return
- Run appliances when the sun is shining
- Consider a battery if you’re out in the day
- Check your export setup and meter compatibility
- Ask for monitoring so you can track performance
Grants, VAT and permissions: what homeowners should know
VAT on energy-saving materials
The UK has applied VAT relief for certain energy-saving materials in recent years. Whether a 0% VAT rate applies can depend on the measure and the timing. Always confirm the VAT treatment with your installer in writing as part of your quote.
Planning permission
Many domestic solar installations are permitted development, but there are exceptions (for example, listed buildings and conservation areas). If you’re unsure, check with your local planning authority before committing.
Grid connection and notifications
Your installer should explain any required notifications or applications related to connecting generation equipment to the grid. Requirements can vary depending on your system design and local network.
How to reduce the cost of installing solar panels (without cutting corners)
Choose the right size for your usage
Oversizing can increase upfront cost without delivering proportionate benefits if you export most of your generation. A good installer will help you balance roof space, expected generation, and consumption.
Get multiple quotes
Comparing proposals helps you understand what’s included and whether assumptions are realistic. Focus on the design quality and warranties—not just the bottom-line figure.
Plan future upgrades
If you may add a battery, EV charger, or more panels later, tell the installer now. A future-ready design (where feasible) can avoid unnecessary rework.
Fix roof issues first
If your roof is nearing the end of its life or has existing problems, tackling repairs before installation can avoid paying for panel removal and re-fitting later.
Solar panel installation: typical process
1. Survey
Roof measurements, shading assessment, electrics check, and discussion of your goals.
2. Design & quote
System layout, predicted generation, equipment list, and a fixed scope of works.
3. Installation
Scaffold (if needed), mounting, wiring, inverter/battery install, testing and commissioning.
4. Handover
Documents, warranties, monitoring setup, and guidance on export/metering steps.
Exact steps and timings vary by installer, roof access, and any required electrical upgrades.
FAQs: install solar panels cost
How much does it cost to install solar panels in the UK?
Costs vary significantly based on system size, roof complexity, scaffolding needs, and whether you add a battery. The most reliable way to understand your likely cost is to request itemised quotes for your postcode and roof type.
Are solar panels worth it without a battery?
They can be, especially if you use electricity during daylight hours. A battery can increase self-consumption, but it adds upfront cost. Ask installers to show expected usage vs export so you can compare scenarios.
Do solar panels increase home value?
They can make a property more attractive to some buyers due to potential bill savings. The impact varies by location and buyer preferences, so it’s best considered a long-term energy upgrade rather than a guaranteed valuation uplift.
Will my roof need reinforcing?
Most suitable roofs won’t need structural changes, but the installer should assess condition and fixings during survey. If there are underlying roof issues, addressing them first is usually the safer, more cost-effective path.
Get a tailored solar panel installation cost
Because every roof and household is different, the fastest way to understand your true cost is to compare quotes based on the same assumptions and scope. Use the form above to start your enquiry and get matched with installers serving your area.
What happens next?
- Share your postcode and property details
- Discuss your goals (bill savings, battery, EV)
- Receive quotes you can compare side-by-side