The Code sets out the high standards of service that consumers can expect from a reliable company. It covers providing estimates and quotations, seeking permission and approval and agreeing the contract. It also covers providing guarantees, safeguarding deposits, providing after-sales service and resolving problems that may occur.

Virginia Graham, REAL Assurance Scheme Chief Executive, welcomed the OFT’s announcement: ‘This is a really significant step to protect consumers who want to reduce their carbon emissions by installing micro generation in their homes.’ She added: ‘Companies signing up to the REAL Code are sending a powerful signal that cowboys have no place in this industry.’

The Code applies whether consumers are buying or leasing solar water heating panels, photo-voltaic solar panels, small-scale wind turbines, biomass boilers, ground-source heat pumps or any other renewable or low carbon micro generation technology.