How to Choose the Best Solar Panel Installer in London
Choosing the right solar panel installer in London is an important decision. Solar panels are a long-term investment, and the quality of the system design and installation can have a significant impact on its performance.
With many solar companies and installers offering different panels, batteries and installation packages, it can be difficult to know which company is right for your property.
In this guide, we explain what to look for when choosing a professional solar installer in London.
Why Choosing the Right Solar Installer Matters
Solar panels are only one part of a complete solar PV system.
A properly designed installation should consider:
- Your electricity consumption
- Roof orientation
- Available roof space
- Shading
- Solar panel specifications
- Inverter selection
- Electrical requirements
- Battery storage
- Future energy requirements
A professional installer should assess these factors before recommending a system.
Choosing an installer based only on the lowest quotation can result in compromises in equipment, system design or installation quality.
1. Check the Installer’s Experience
One of the first things to consider is the company’s experience.
Ask how long the company has been providing solar installation services and whether it has experience with properties similar to yours.
You can also ask to see examples of previous installations.
A good solar installer should be able to explain:
- Previous residential projects
- Commercial projects
- Types of solar systems installed
- Battery installations
- EV charging installations
- Typical installation processes
Experience with different types of properties can be particularly useful in London, where homes and buildings can vary considerably.
2. Check Relevant Certifications
Solar installation involves electrical work, so it is important to understand the installer’s qualifications and certifications.
Ask the company which relevant industry certifications it holds and whether the proposed installation meets applicable UK requirements.
Certification can also be important when considering eligibility for schemes such as the Smart Export Guarantee.
Ofgem states that eligible installations may need to demonstrate suitable certification, such as an MCS certificate or equivalent, depending on the circumstances. (ofgem.gov.uk)
Always verify the current requirements rather than relying solely on a company’s marketing claims.
3. Look at the Quality of the Solar Panels
Not all solar panels are identical.
When comparing quotations, ask for the exact panel manufacturer and model.
Important specifications can include:
- Panel efficiency
- Power output
- Product warranty
- Performance warranty
- Physical dimensions
- Temperature characteristics
- Manufacturer support
A reputable installer should explain why a particular panel has been recommended for your property.
4. Don’t Forget About the Inverter
The inverter is one of the most important components of a solar PV system.
Solar panels generate DC electricity, while the property’s electrical system generally uses AC electricity.
The inverter converts the generated electricity into usable AC electricity.
When comparing solar quotations, ask:
- Which inverter will be installed?
- What is its capacity?
- What warranty is provided?
- Does it support battery storage?
- Does it provide system monitoring?
- Is it suitable for the proposed solar system?
The cheapest inverter is not necessarily the best choice for every installation.
5. Ask About Battery Storage
If you are considering solar panels, it is worth asking the installer whether battery storage would be suitable for your property.
Solar panels generally generate electricity during daylight hours, while household electricity usage can continue throughout the evening.
A battery can store some surplus solar generation for later use.
Battery storage may be particularly useful for households that:
- Use significant electricity in the evening
- Have relatively low daytime electricity consumption
- Want to increase solar self-consumption
- Are considering an EV
- Want greater flexibility in managing electricity usage
However, a battery is not automatically necessary for every property.
A good installer should explain the potential benefits and costs instead of simply adding a battery to every quotation.
6. Ask for a Proper Property Assessment
Avoid choosing a solar installer based entirely on an online price.
A professional installer should assess your property before providing a final system design.
The assessment may consider:
Roof Orientation
The direction your roof faces can influence solar generation.
Roof Pitch
The angle of the roof can affect the positioning and performance of the panels.
Shading
Trees, chimneys, neighbouring buildings and other obstacles can reduce solar generation.
Roof Condition
The installer should consider whether the roof is suitable for the proposed installation.
Available Space
The available roof area determines how many panels can realistically be installed.
Electrical System
The property’s existing electrical installation should be considered when designing the solar system.
7. Compare Complete Quotations
When comparing solar installers in London, don’t compare only the total price.
Ask each installer what is included.
A quotation may include:
- Solar panels
- Inverter
- Mounting system
- Electrical protection
- Installation labour
- Scaffolding
- Monitoring
- Commissioning
- Battery storage
- Additional electrical work
Two quotations with similar prices may contain very different equipment and services.
Make sure you understand exactly what you are paying for.
8. Check Product and Workmanship Warranties
Solar systems are designed to operate for many years, so warranties are important.
Ask about:
- Solar panel product warranty
- Solar panel performance warranty
- Inverter warranty
- Battery warranty
- Mounting equipment warranty
- Installation/workmanship warranty
Also ask who will provide support if something goes wrong in the future.
A clear warranty and after-sales process can provide greater confidence in your investment.
9. Read Genuine Customer Reviews
Customer reviews can help you understand how a solar installer communicates with customers and handles completed projects.
Look at reviews across reliable platforms and pay attention to comments about:
- Installation quality
- Communication
- Professionalism
- Project completion
- After-sales support
- Problem resolution
Don’t focus only on the star rating.
Read the actual reviews and look for detailed experiences from customers.
10. Look at Previous Solar Installations
Ask the installer whether they can show examples of completed projects.
A good portfolio can help you understand the company’s experience with different:
- Roof types
- Property sizes
- Solar system sizes
- Battery installations
- Commercial buildings
For local customers, examples from nearby London areas can be particularly useful.
11. Consider a Local Solar Installer
There can be advantages to choosing a solar installer with a local presence.
A local company may have experience working with properties in your area and can potentially provide easier access to installation and after-sales support.
For homeowners searching for:
solar installers near me
or
solar panel installers near me
location can be an important part of the decision.
However, don’t choose a company based on location alone. Experience, qualifications, equipment, workmanship and customer service should also be considered.
Choosing a Solar Installer in Ealing and West London
If you are based in Ealing or West London, choosing an installer with a local presence can make the consultation and installation process more convenient.
MAPS Renewables by MSC Electric Ltd is based at:
Suite 12, Ground Floor, Boundary House, Boston Road, London, W7 2QE
The company provides renewable energy and electrical services for residential and commercial customers.
Services include:
- Solar panel installation
- Solar PV systems
- Solar battery storage
- Commercial solar installation
- Residential solar installation
- EV charger installation
- Electrical services
The company serves customers across Ealing and surrounding areas of London, including areas such as Acton, Hounslow, Brentford and Chiswick.
Questions to Ask a Solar Installer Before Hiring Them
Before accepting a quotation, consider asking these questions:
What size solar system do I need?
The installer should explain how the proposed system size relates to your electricity consumption and available roof space.
Which solar panels will you install?
Ask for the manufacturer, model, efficiency and warranties.
Which inverter will you use?
The installer should explain why the selected inverter is suitable for your system.
Do I need a battery?
Ask for a calculation or explanation of whether battery storage would benefit your particular usage pattern.
Is scaffolding included?
Find out whether scaffolding and access equipment are included in the quotation.
What warranties are included?
Ask for both product and installation warranty information.
Who will handle the installation?
Find out whether the work is carried out by the company’s own team or subcontractors.
What happens after installation?
Ask about monitoring, maintenance and after-sales support.
Red Flags When Choosing a Solar Installer
Be cautious if a company:
- Provides a quote without properly assessing the property
- Cannot explain the proposed system
- Avoids giving equipment model numbers
- Provides unclear warranty information
- Makes unrealistic savings promises
- Pressures you to make an immediate decision
- Cannot provide evidence of relevant qualifications
- Offers an unusually low price without explaining why
A professional installer should be willing to explain the system and answer your questions.
What Makes a Good Solar Installation?
A good solar installation is not simply about putting as many panels as possible on a roof.
The system should be designed around the property.
A well-planned installation considers:
Roof + Solar Panels + Inverter + Electrical System + Energy Usage + Battery Requirements
When these components are properly matched, the system can provide useful renewable electricity for many years.
Why Choose MAPS Renewables?
MAPS Renewables by MSC Electric Ltd provides solar and renewable energy solutions for homes and businesses across London.
Based in Ealing, the company can help customers assess their property and determine suitable options for solar PV and battery storage.
The focus is on designing systems around the customer’s property and energy requirements rather than offering a one-size-fits-all solution.
Get a Solar Installation Quote in London
If you are searching for a solar panel installer in London, take the time to compare installers, equipment, warranties and system designs before making your decision.
MAPS Renewables can assess your property and discuss suitable solar PV, battery storage and EV charging options.
Contact MAPS Renewables today to request a solar installation quotation in London and find out whether solar is suitable for your home or business.