I am writing this just a year after the installation of Sigenergy solar panels. I chose GEC after getting quotes from several companies. Mark from GEC responded very promptly and gave me quotes and information about five possible products. Sigenergy wasn't the cheapest, but seemed the best on reviews. From initial survey to installation was around four weeks. Scaffolding went up in no time, and the whole system was up and running within a few days. The scaffolding was only up for a week. The whole system was impressive with control and automation making generation completely hassle-free, mainly because Mark is a great organiser. I didn't need to involve myself or spend time reading instructions because I had such good support, and all the permissions and paperwork were taken care of. We are now one year in and reaping the benefit of supplying energy to the Grid. I subsequently used Mark, and GEC to install automatic heating controls at our village hall. This involved some innovative thinking, and once again we enjoyed hassle-free installation. Mark was always there at every stage. We also used GEC to install an Ohm car charger quite recently, which was installed within a week of asking. As with all the electrical work we have had done, it is highly professional and efficient.