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About MCS

MCS is a mark of quality and demonstrates
compliance to industry standards that companies
strive to meet. It highlights to consumers that
companies are able to consistently install or
manufacture to the highest quality every time.

MCS has been receiving an increasing number of reports from consumers claiming to have been contacted by companies – cold calling and offering free health checks on their Solar PV installations in conjunction with MCS. MCS is aware that the brand is being misrepresented by individuals and companies claiming to either be working for, or with, the MCS carrying out these checks. 

 We would like to confirm that MCS has not partnered with any installation or maintenance companies and contact details are not coming from MCS directly.

We have been notified by consumers who have received calls regarding the following services:

  • Maintenance
  • Upgrades
  • Safety checks
  • Inverter checks
  • Buy back solar solutions

Other claims being made are that, if the system inverter, which forms part of a Solar PV installation, is not replaced and a fire ignites on the roof, the Fire Brigade will not respond. This is categorially untrue. MCS is highly concerned about such pressure selling and scaremongering.  We can assure everyone that these claims are unfounded; the fire brigade always turn out to a fire! Replacing the system inverter is not an automatic/mandatory requirement and system owners should not feel pressured into making this purchase.

We would like to reassure you that MCS takes consumer protection very seriously. Whether the company is certified or not, MCS would expect any responsible company to act with due diligence, honesty, fairness and integrity in its dealing with any consumer.

We are working closely with Trading Standards to end these practices.  We encourage anyone who is approached by companies or individuals offering these services to contact Trading Standards through the Citizens Advice helpline (Tel:03454 040506) or ourselves (Tel: 020 7090 1082 / Email: This email address is being protected from spambots. You need JavaScript enabled to view it.).