COVID-19 NOTICE. Updated 01/06/2020

We are open as usual.
Underfloor Heating: All goods are being sent out on a next working day service however there may be delays with Parcelforce during these unprecedented times. We are still operating as normal and we can answer any questions by phone or email
Solar Maintenance: We have restarted Engineers visits for both domestic and commercial properties. Our team strictly following social distancing and follow the Governments guidelines for working in people’s homes. Due to the recent good weather, appointments are in demand and will be booked on a first come, first served basis Please contact us ASAP to avoid disappointment.

Solar PV Maintenance & Repair

We cover Surrey, Sussex, Hampshire, Middlesex, Berkshire, Kent and Greater London.
Rayotec repair and maintain solar PV electricity systems of all sizes ranging from small domestic six panel systems to commercial systems comprising of hundreds of panels.   We look after the thousands of systems that we have installed over last 30 years as well as systems installed by other companies. Our aim is to give a professional expert service, at very competitive prices.

WhichWhy Choose Rayotec
  • Free Assessment and Fault Finding: Free telephone or email assessment and fault finding. In many cases we give advice over the phone that allows customers to get their system up and running themselves at no cost.
  • No Hidden Charges: Transparent Pricing - If a visit is required then it includes up to an hours labour which is long enough to fix many common problems.
  • Accreditation: We are accredited NICEIC "Approved Contractors", the highest electrical qualifications a company can get. 
  • Experienced: We have installed and serviced thousands of systems over the last 30 years
  • Great Value: We have local engineers dotted around the South East and group call outs together to lower costs 
COVID-19 Update - During these uncertain times it more important than ever to look after your solar PV system. We are operating as normal however appointments will be on a first come first serve basis. We ask you to maintain a 2m distance from our engineers to follow Government guidance. 

Contact Us Now

For Advice or to Book an Engineer


We give a free telephone or e mail assessment for every new customer. Often by asking a few questions we can fault find and give advice which allows the customer to get the system up and running themselves at no cost. We will only arrange for a chargeable engineers visit if it's absolutely necessary. 

Our Services:
Fault Finding and Repairs
Even though solar PV systems are generally very reliable  sometimes things do go wrong. If your system stops generating energy or doesn't seem to be generating as much as it used to, one of our expert engineers can come and assess system, identify the problem and resolve any issue quickly and efficiently to ensure that your Solar PV System is back to full working order as quickly as possible. All of our call outs include up to 1 hour of labour and often we can resolve any problems within this period.
Rayotec Team

Common issues with Solar PV systems:
  • Reduction in electricity generation
  • Loose electrical connections
  • Faulty parts including inverters
  • Damage by pests such as pigeons
  • Storm damage
The most common inverters we deal with are manufactured by SMA, Fronius, Mastervolt, Arura, SolaX, Solis, SolarEdge, Afore and Growatt although we can service any other kind of solar inverter. We are also familiar with the Maslow, Goodwe, Growatt and SolaX battery storage systems.

Comprehensive Health Check

Solar Photovoltaic systems don't have a lot moving parts that can fail so they don't require a huge amount of work to keep them in good working order. However, as with any technology, the better care you take of it the longer it will last. In order to make sure that your solar panels are performing at their best efficiency it is recommended that you arrange a regular health check to make sure that they live a long and happy life, supplying you with all clean energy, savings on your energy consumption and protecting your investment.e. In addition to all the standard checks and controls our engineers will also:

Solar Panels Being Installed

  • Check the inverter for error messages
  • Check the functional operation switches
  • Do a complete shut-down test of the inverter
  • Do a full test and inspection on the DC side of the system
  • Remove the fan housing and clean the fan unit
  • Carry out a system performance check

What Areas do We Cover?

Our main office is based in Middlesex and we have experienced engineers based around the South East of England . Our Solar PV engineers cover: Middlesex, Surrey, Berkshire, Hampshire, Sussex, Kent and the Greater London Area.

Rayotec Ltd

Rayotec is a family run business. With over 30 years of experience working in Solar Energy under our belts you can rest assured that we have the knowledge and expertise to check your system thoroughly and efficiently. As Which? Trusted traders we ensure that the work we do is of the highest quality and that our customers get the exceptional service that we are known for. We have installed thousands of system throughout the South of England and as a well established business we are able to group our calls geographically in order to keep your costs low, and with every call including up to 1 full hour of labour we are able to offer the highest level of service at the best possible price. Added to that, as we are based in the South East of London, we are in the perfect place to offer expert, local advice and servicing to the Greater London Area and the Home Counties. To find out more about Rayotec click here...

Get in Touch (Phone or E mail)

Customer Reviews

Maggie Mcdonnald Posted 09 May 2019
The engineer did an excellent job in sorting everything out for us!
Checkatrade Customer in Woodbridge Posted 13 May 2018
Solar inverter (failed) was replaced.

“Prompt, courteous and intelligent service. Removed all rubbish. Couldn't have asked for more.”
Checkatrade Customer in Ingatestone Posted 08 Feb 2018
New inverter fitted - Excellent.
Checkatrade Customer in Guildford Posted 09 Jan 2018
Check system and supply and fit new inverter.

“Carried out to my satisfaction very well. Very pleased with all aspects of work from initial contact with Rayotec to job completion."
Anonymous Posted 08 Nov 2017
A professional experience from my telephone call for help as renewing the solar generation failure by the friendly and informed electrician
Customer in Seaford Posted 22 Aug 2017
Customer in Sidcup Posted 17 Aug 2017
Very efficient, professional work with knowledgeable answers to questions about solar systems
P Manley Posted 08 Apr 2017
Rayotec installed our Solar PV system so when the inverter failed, typically only months after the manufacturer's warranty expired, I contacted them about a replacement.

I spoke with Reza who gave me two options with prices and when I had made my decision Reza kept me informed of progress of the order and the install date. The wait time for installation was only one week and good communication was maintained throughout this period.

Dave came to install the new inverter and he was excellent. He was punctual, very efficient with a high level of expertise, very helpful and always polite - a credit to Rayotec. When Dave identified a further problem with my panel array, caused by nesting Jackdaws between the panels and the roof, he was again very knowledgeable and helpful in recommending a pest control company who could resolve the problem.

I am very happy with the service I received from the Rayotec Team and cannot recommend them highly enough.
Anonymous Posted 01 Feb 2017
I've had underfloor heating and solar panels fitted by Rayotec, I'm very happy with both the work done and the top service they gave me. They are friendly, professional, I had a small problem with the boiler system, which they very kindly took the time to explain how it all worked so the issue was resolved.

They really went above and beyond the call of duty, and I recommend them highly to others, no problems at all. I'll be booking them again for another job on another property very soon.
Customer, Lingfield Posted 04 Jan 2017
We had our solar panels serviced by Rayotec. The Engineers arrived on time and were very efficient, the men were pleasant and polite and explained in details what they were doing, very helpful
         Which Trusted Traders

Our membership of MCS and RECC only applies to our renewable products