CALL
CONTACT US
0203 834 9440
Call us today on 020 3834 9440

Cardiff solar panels Trusted commercial solar in South Wales

Solar Panels Cardiff Affordable Commercial Solar Solutions

Excel Energy is an award-winning solar panel installer specialising in commercial solar panels across Cardiff, Swansea, Newport, Bridgend, and the wider South Wales region.  

Our consulting-based approach ensures that every solar photovoltaic (PV) system we design and install meets the client’s needs. By partnering with trusted manufacturers like REC and Trina, we provide durable, high-performance systems that improve efficiency and deliver long-term results.  

For businesses in South Wales, investing in solar panels is not just about being sustainable. It is also about realising real energy savings, reducing carbon emissions, and achieving a solid return on investment. 

Contact Us
cardiff solar panels

What our clients say

Excel Energy installed a 1.58MWp DC PV system with 3855 panels and 11 SolarEdge inverters. The installation team, led by Nick Neza, displayed an exceptional work culture, taking pride in every detail and creating an engineering art piece. The professionalism, knowledge, and commitment of Excel Energy surpassed expectations, making them the top choice for PV solar installations in the UK.
Karl JamesQuidelOrtho, Facilities Manager ⭐⭐⭐⭐⭐
Qualiturn’s aim is to be one of the greenest subcontractors available in the UK, producing subcontracted Turned & Milled components. Our factory uses power from 130kw to 160kw per hour. Our new system along with the existing panels, will give us the potential to produce 200kw We will now be helping our customers with the carbon reduction and CBAM requirements of their products. Thank you to Excel Energy for the install, support and advice to achieve these targets.
Nicholas GroomManaging Director ⭐⭐⭐⭐⭐
A site visit from Nick Neza left me in no doubt that my solar installation was going to be in good hands with Excel Energy and I wasn't wrong! The quote was favourable, the whole process was smooth and efficient. All the various permissions were obtained by Nick, the attention he gave to detail was thorough and so very reassuring. The installation team were simply magnificent. Ploughing on through rain and shine, their work ethic was truly amazing. I could never have imagined the project being completed as it was. Nothing was too much trouble, simply first class!
Royston SumnerFort Stamford, Health And Fitness, Owner ⭐⭐⭐⭐⭐
Excel Energy were very knowledgeable and responsive to our requirements. We ordered a 7.2kWh solar PV system with Solar Edge battery and inverter, and the team that came to install did an excellent job. I was impressed with their good attitude, attention to detail and high quality of workmanship. I would recommend anyone considering a PV solar system use Excel Energy. I have been so impressed with their work and the performance of the system installed at my home that I have just commissioned them to do a commercial installation on my business premises.
John MLimlab, Director ⭐⭐⭐⭐⭐
Great team to work with. We had issues getting approval from national grid on our system Excel Energy kept me informed through the process. When we had approval the installation was carried out in no time.
Glenn WilsonFacade Hoists, Director ⭐⭐⭐⭐⭐
We were looking to put Solar Panels on our farm buildings and had researched a few different companies, but found Excel Energy to be the most competitive. The service and support we have received from Nick Neza has been amazing throughout the whole installation process. He visited us on the farm, went through everything with us, planned the job and gave us a timescale. The team of men turned up on the planned date, fitted all the panels, installed all the electrical equipment and commissioned the system within the planned timescale. All the paperwork has been excellently planned. All certificates have been received. If there are any problems or queries then Nick is available at any time. The company has been excellent all the way through the whole process. We thoroughly recommend them.
Clive PritchardKeepers Lodge Farm ⭐⭐⭐⭐⭐
Excel Energy Ltd, A great installation from the products used the effective fitting of PV Panels and provision of scaffolding, the team lead by Nick and Bled were efficient and tidy with the whole operation and cleared the site with out any disruption or mess, the system its self is working to maximum effect and performing as per design, I can thoroughly recommend Excel Energy Neville Blake RC, Sussex Yacht Club, Shoreham by sea
Neville BlakeSussex Yacht Club Facilities Manager ⭐⭐⭐⭐⭐
Nick and his team are simply excellent. They installed our 200kw system on our factory roof without any glitches...a very smooth and professional operation.
Orazio GualtieriByron & Byron Ltd Director ⭐⭐⭐⭐⭐
I have known Nick for a few years, and his installations/commissionings are first-class. Would highly recommend his workmanship.
Joe MartelloRoscomac, Director ⭐⭐⭐⭐⭐
Nick Neza and his team have just installed a Home SolarEdge Battery and Backup System for me. They did a great job, no fuss, all good despite a software version issue between the relevant boxes. They even came back on a Sunday to work on the problem. Overall, a very good service, the problem was not of their making and they sorted it out with no fuss.
Dave B⭐⭐⭐⭐⭐
The installation itself was meticulous, and the team was both friendly and knowledgeable. They navigated the complexities of my building with ease, proving that no job is too complicated for them. If you're looking for a reliable and skilled company for EV charger installation, I wholeheartedly recommend Excel Energy Ltd. They turned what seemed like an impossible task into a seamless experience.
Amir⭐⭐⭐⭐⭐
Having looked at several other installers we decided to go with Excel Energy. From the initial survey right through to installation & commissioning the service and attention to detail was outstanding. We installed a 18.48kwp Solar PV System & a couple of EV Chargers. Nick & his team were extremely professional in every aspect of the works. Special mention to Bled the supervisor for his never ending patience! I absolutely would recommend Excel Energy for your Solar PV System installation.
Patrick AhernCharity For Civil Servants ⭐⭐⭐⭐⭐
Solar in safe hands! Nick and his Team at Excel Energy have done a great job supporting a refit, service and upgrades to our Business systems. Everything was on time, as quoted and additional support provided when asked. Good job!
Joe MRoscomac ⭐⭐⭐⭐⭐
Nick from Excel Energy supervised the installation of our ground mounted panels with battery back up. This was done carefully and to a very high standard. We are now enjoying free electricity and earning money from feeding surplus into the Grid. I would also like to thank Nick for his patience guiding me through the procedures so that I can now see what is being generated by each panel on my computer and mobile phone. This is addictive!!
Nick JonesLamberhurst Farm ⭐⭐⭐⭐⭐
After meeting a number of Solar companies, Nick and his Team at Excel were by far the most helpful when it came to designing a system which needed to be split over multiple roofs and have no visual impact to the unique design of the building the panels sat on or the surrounding area. Very happy customer.
Nick Herridge⭐⭐⭐⭐⭐
We would like to express our appreciation for the excellent service provided by Nick at Excel Energy Ltd. He efficiently installed our replacement SolarEdge inverter and seamlessly integrated it with our existing SolarEdge account. Thank you for your professionalism and expertise.
Michael H⭐⭐⭐⭐⭐
We have just had Solar installed by this excellent Company. Led by Nick, who was knowledgeable, helpful and efficient all the way through the process, everything went smoothly. The team of installers were courteous, conscientious and hard working. Everything was installed, up and running within a week. Impressive!
Heather BoardOwner ⭐⭐⭐⭐⭐

Case Study: QuidelOrtho Pharmaceutical Manufacturer, Bridgend, South Wales

QuidelOrtho, a global pharmaceutical manufacturer based in Pencoed, Bridgend, approached Excel Energy to reduce their operational costs and carbon footprint by installing a large-scale commercial solar panel system. 

The Challenge 

With high energy demands and large roof space, QuidelOrtho needed a solar partner capable of meeting strict deadlines while delivering a system that matched the highest industry standards. 

The Solution 

Excel Energy designed and installed a 1.58MW rooftop solar PV system using REC Twin-peak 410wp solar modules and SolarEdge synergy inverters with S1000 optimisers. 

✅ System Size: 1.58MW 

✅ Estimated Annual Output: 1.41 GWh 

✅ Payback Period: 2.8 years 

✅ 25-Year Net Profit: £20.5 million 

✅ Annual Carbon Savings: 272.16 tonnes 

The project was completed within tight timeframes and commissioned in compliance with G99 and G100 regulations. Training was provided to staff on system monitoring and performance tracking. 

The Outcome 

QuidelOrtho now enjoys: 

✅ Major savings on annual energy costs 

✅ Reduced reliance on the grid 

✅ Significant carbon reductions 

✅ A future-proof energy strategy for pharmaceutical manufacturing 

“The Excel Energy team were professional throughout, completing the project on time and to a very high standard. We wouldn’t hesitate to recommend them for commercial or industrial solar installations across the UK.” 

 — Karl James, Facilities Manager, QuidelOrtho 

Read the full QuidelOrtho case study 

Solar Energy Return on Investment (ROI) in South Wales

Businesses across Cardiff, Swansea, and South Wales are turning to solar panels for their strong financial returns. 

ROI:

Commercial solar systems in South Wales see an average ROI of over 20%.

Payback Period:

Typically, between 3–7 years.

Savings:

Businesses can cut electricity bills by up to 70% compared to grid energy.

Cashflow Positive:

Flexible finance options mean your system can generate savings from year one, often without using your business’s capital funds.

By locking in fixed-price electricity at around 5 pence per unit for the next 25 years, companies gain stability in an unpredictable energy market. 

Other Benefits of Commercial Solar in Cardiff & Swansea

✅ Free fuel for electric vehicles (EV charging powered by solar). 

✅ Reduced operational costs with predictable energy pricing. 

✅ A measurable reduction in carbon footprint, boosting ESG credentials. 

✅ A reliable, long-term energy asset increasing property value. 

Contact Us

Excel Energy – Trusted Solar Panel Installers in South Wales

Whether you’re a pharmaceutical manufacturer in Bridgend, a logistics centre in Cardiff, or an agricultural business in Swansea, Excel Energy provides turnkey solar PV solutions tailored to your sector. 

We handle: 

✅ Feasibility studies & consultancy 

✅ System design 

✅ Installation & commissioning 

✅ Ongoing monitoring, maintenance & aftercare 

We cover the entire South Wales region – from Cardiff to Swansea, Newport, Bridgend, and beyond. 

Selecting the most appropriate commercial solar installer reassures the importance of your organisation’s interest in solar investment. As one of the leading solar panel companies, Excel Energy is a proven, reliable partner with a good reputation and previous experience in managing similar large solar panel projects.

To ensure they are qualified to install solar PV panels, you should check out their previous projects and establish that they have relevant quality monitoring bodies and certifications like the MCS and are members of RECC.

Choosing the right Commercial solar installer

Power Your Business With Solar PV in South Wales

For more information about solar PV electricity for your South Wales-based business, our team at Excel Energy is here to help.

Whether you’re in Cardiff, Swansea, Newport, Bridgend, or anywhere across South Wales, we’ll design and install a commercial solar panel system that delivers real savings, a strong return on investment, and long-term sustainability.

Call us today on 0203 834 9440 or complete our Contact form for a free consultation and a site survey.

Excel Energy – award-winning solar panel installers in Cardiff and South Wales, trusted by businesses across the region.