Renewable Energy Systems

The RES Group (Renewable Energy Systems) is a company operating in the global renewable energy sector for over 40 years. The company specializes in developing, constructing, and operating large-scale renewable energy projects that are connected to the grid. These projects cater to commercial, industrial, and utility clients. RES's primary areas of activity include both onshore and offshore wind energy, as well as solar energy. In recent years, the company has increasingly emphasized supporting the transition to a low-carbon economy. This includes focusing on transmission, energy storage, and demand-side management solutions.

History
Renewable Energy Systems was started in 1982 as part of the Sir Robert McAlpine group of engineering and construction companies. Its early years were spent in researching various designs for commercial wind turbines, including work on a vertical axis wind turbine (VAWT) model as well as the now more widely used horizontal axis (HAWT) units. The company built its first commercial wind farm at Carland Cross in Cornwall in 1992, using 15 Vestas turbines, each of 400 kW capacity. In December 1998, the first commercial 1MW wind turbine to be designed and built in the UK was installed by RES at Slievenahanaghan, Co Antrim.

In 2001 the company built the then-largest wind farm in the world at King Mountain in Texas, using 214 Bonus turbines of 1.3 MW capacity. In 2005, RES won a Queen's Award for Enterprise in the Sustainable Development category. More recently the company has been active in the developing offshore UK wind power market. It has supported the delivery of both onshore and offshore engineering works for the Lynn and Inner Dowsing offshore wind farms off the coast of Lincolnshire in the UK.

The RES Group has now developed and/or constructed over 100 wind farms worldwide, with more than 12 GW of capacity. In addition, it has projects on its books totalling several thousand megawatts worldwide, at various stages of development.

The group manages the assets of The Renewables Infrastructure Group, a company involved in onshore wind and solar energy in Britain, France and Ireland, that floated on the London Stock Exchange in 2013 to raise up to GBP 300 million.

The RES Group has offices across the UK, Europe, North America, and Australia.

UK headquarters building
Since late 2003, the headquarters of RES have been situated at Beaufort Court, Kings Langley, Hertfordshire, UK. The site, occupying the renovated 'Arts and Crafts' style building of the former Ovaltine Egg Farm, built in 1929, integrates several sustainable energy solutions. These include electricity generation from an onsite wind turbine and solar photovoltaic panels, heating through solar thermal panels and a biomass boiler, and cooling using pumped groundwater. The headquarters also includes an area for growing miscanthus, a type of energy crop, reflecting the company's use of sustainable practices.