Established in the 1980’s within the UK’s Sir Robert McAlpine engineering and construction group, today, RES (Renewable Energy Systems) is the world’s largest independent renewable energy company, with the expertise to develop, construct and operate projects around the globe. Headquartered in the UK, the company operate globally with offices in 10 countries across the Americas, Europe and Asia Pacific.

RES is active in a range of energy technologies including onshore and offshore wind, solar, energy storage and transmission and distribution.

RES is the world’s largest independent renewable energy company, working across 24 countries and active in wind, solar, energy storage, biomass, hydro, green hydrogen, transmission, and distribution. An industry innovator for over 40 years, RES has delivered more than 26 GW of renewable energy projects across the globe and plans to bring more than 22 GW of new capacity online in the next five years.

RES provides high quality, reliable services for the growing renewable energy sector. With its extensive experience and ability to manage large-scale projects, RES continues to play a key strategic role in supporting global sustainability and decarbonisation goals.

The company has increased its presence in 10 new markets, including Mexico, Chile, Mexico and Brazil in the LATAM region, where the company has achieved a leading position in the solar sector. In Europe and the United States, RES foresees great growth potential and new opportunities in the coming years.

Wind projects
RES have been involved in researching renewable technologies since the 1980s, and built their first wind farm in Cornwall, UK, in 1992. Within 10 years the company had completed the largest wind farm in the world at the time, in Texas. Today, with one of the largest project portfolios in the industry and an asset management portfolio exceeding 2 GW, RES continue to provide partnerships and services to the world's fastest growing energy sector.

Solar
RES has a wealth of experience in solar development, construction, and operations covering both utility-scale, centralized energy solar farms and distributed solutions, across the Americas and the EMEA region.

RES has the capabilities to develop, construct, operate, and optimize the operation of solar projects utilizing photovoltaic (PV) technology.

The company can provide feasibility, detailed design, and project management through to construction, finance, ownership, asset sale or continued energy generation.

RESolve energy storage
RESolve energy storage systems encompass the full life-cycle of energy storage solutions, from day-one modeling and in-house engineering, to construction and long-term management.

The company's systems are customized to meet the demands of any customer and bolstered by RES’ industry-leading expertise in development, engineering, construction, operations, finance, and project ownership.

Key operational activity in 2024

UNITED KINGDOM

In December 2024, RES was awarded the asset management contract for the landmark Larks Green project, the UK’s first co-located solar and battery energy storage system connected to the transmission network.

Developed by Enso Energy and owned by Cero Generation, the site near Bristol combines 70MW of solar power with a 50MW battery energy storage system (BESS), delivering renewable energy to the grid when it’s needed most. This milestone reinforces RES’ position as a trusted partner in renewable energy services, – supporting 41GW of renewable assets across 1,300 sites globally, including a significant portfolio in the UK.

OWOP
The Offshore Wind O&M Partnership (OWOP), an alliance between RES, GEV Wind Power, Outreach Offshore and Rix Renewables, welcomes Rovco, a leading UK-based provider of technology-powered offshore wind solutions, to complement its package of quality, long-term operations and maintenance (O&M) services to offshore wind asset owners internationally.

FRANCE

RES entered the French market in 1999 as a joint venture with Eole Technologie, a wind farm developer active since 1995. The company were originally known as EOLE-RES and are now one of the leading renewable energy companies on the French market.

RES is behind 627 MW (megawatts) of renewable energy installed or currently under construction in France. These utility-scale projects produce 1.6 terawatt hours annually, providing enough electricity for 355,000 homes and preventing 136,000 tonnes of CO2 emissions every year.

The company have more than 2,500 MW of projects under development, at different stages.

GERMANY

Since 2013, RES has been developing wind energy projects and turnkey energy storage for landowners, municipalities, energy suppliers and industrial clients in Germany.

NORWAY

Established in 2002, Nordisk Vindkraft is a leading wind power developer in Sweden and Norway. Operating as an independent business with full technical and financial support from family owned parent company, RES.

In June 2024, Storåsen wind farm was approved by Ånge municipality in the municipal council. Storåsen, which consists of 24 turbines, will contribute a total of 500 GWh to the energy mix in SE2 – which corresponds to 50% of the energy supply for Ljungaverk’s hydrogen plant.

Storåsen wind farm will supply renewable energy to Tovåsen grid station, which in turn will be the hub for the two large-scale hydrogen plants that RES is developing in Ånge. The energy production from Storåsen corresponds to half of the energy needs for Ljungaverk’s green hydrogen plant.

SWEDEN

In April 2024, RES, was given the green light to develop a large-scale solar park in Falköping, in the south of Sweden. The park is expected to produce 13.5 million kilowatt-hours per year which is enough electricity to power 700 homes.

With an area of 20 hectares, this facility will be a significant producer of renewable energy, helping to reduce the region’s dependence on fossil fuels and thus also reducing its carbon dioxide emissions.

Construction of the solar power park is expected to begin in 2025, and once operational, it will be able to supply hundreds of households with green energy while serving as a living example of how renewable energy and nature conservation can coexist for the benefit of both people, animals, and the environment.

TURKEY

In October 2024, RES received a Generation License for its 70MW Elmacık Wind Power Plant (WPP) from the Energy Market Regulatory Authority (EMRA). Elmacık will be located in Kırklareli, Turkey and the 12 turbines are anticipated to generate 305GWh of clean electricity every year. 

It is a significant milestone for the project, which aligns with the Turkish National Energy Plan’s long-term vision to increase the share of renewable energy in the country’s electricity production to 45.7% by 2026. The Elmacık WPP is set to play a vital role in this vision as well as providing local jobs and employment opportunities during the construction and operation of the wind power plant. 
In November 2024, RES announced the successful sale of the Elmacik Wind Energy Project in Turkey. Located in Kırklareli Province, this 12-turbine, 70MWe project has been acquired by a Turkish investor specialising in renewable energy and large-scale infrastructure construction, marking a significant addition to Türkiye’s renewable energy landscape. With an investment of approximately $77 million, the project is anticipated to begin commercial operation in late 2025.

USA

RES have been providing development, engineering, construction and operations services to the utility-scale wind, solar, transmission, energy storage markets across the United States since 1997.

RES Webberville solar park, Texas (Image source: RES)

RES employs more than 500 full-time professionals and have more than 8,000 MW of renewable energy projects installed or currently under construction in the US. These total an annual production of 25 terawatt hours, and can provide enough electricity for 2.3 million homes. They also prevent 17 million tons of CO2 emissions every year. In addition, RES currently have more than 5,300 MW of projects at different stages of development.

RES are experts in third-party engineering, procurement, and construction (EPC) and balance of plant/systems (BOP/BOS) construction services for the renewable energy, transmission, and energy storage industries. The company also develop and/or own and operate renewable energy and storage projects.

CANADA

RES has been a leading force in Canada’s renewable energy industry for 20 years, with a portfolio that includes over 4,000 MW of wind, solar, and energy storage projects developed or constructed.  The company’s expertise spans the full lifecycle of renewable energy projects, from development and construction to operations and maintenance (O&M) and asset management. 

In February 2025, RES announced the selection of the Eigg Mountain Wind Project in Nova Scotia as part of the province’s Green Choice Program.  

The project will be developed in partnership with Paq’tnkek and Pictou Landing First Nations who have signed a memorandum of understanding with RES. The project will contribute significantly to Nova Scotia’s clean energy transition, providing new jobs, investment into the community, and sustainable power to the grid.  Once constructed by RES it will have 25 turbines with a combined installed capacity of up to 150 MW. 

The Green Choice Program is the single largest addition of clean electricity in Nova Scotia’s history and will move the province closer to its goal of 80% renewables by 2030.  Six wind farms, including Eigg Mountain, were chosen through a competitive independent procurement process, and will supply over 2,000 GW hours of renewable energy annually by 2028, supporting 11 large-scale electricity customers. 

AUSTRALIA

RES has been developing renewable energy in Australia since 2004, providing wind farms that generate pollution free electricity, contribute to a cleaner environment, and have a positive economic effect on their local communities.

In September 2024, The Queensland Government welcomed Stanwell’s acquisition of the 436.5MW Tarong West Wind Farm project from RES.

Stanwell and RES recently signed the historic agreement, meaning Queenslanders will own 100 per cent of the project and the clean energy it will produce.

The project located in South Burnett will realise significant economic benefits for Queenslanders, including around 200 construction jobs and hundreds more indirect jobs as well as 15 operational jobs.

The Tarong West Wind Farm project, which recently received development approval, will feature 97 wind turbines and produce enough clean energy to power the equivalent of 230,000 homes.

CONTACT

RES Global Head Office
Beaufort Court, Egg Farm Lane
Kings Langley, Hertfordshire
WD4 8LR, England, UK

Tel: +44 (0)1923 299 200

LEADERSHIP

Gavin McAlpine, Chair
Eduardo Medina, CEO
Douglas McAlpine, Chair, Americas
André Canguçú, CEO Americas
Juan Gutiérrez, CEO Services
Marco Perona, CEO EMEA
Henrik Brandt, CFO
Maria Irvin, Chief People & Culture Officer
Dominic Hearth, General Counsel
Paula Murphy, Chief Communications, Marketing & Sustainability Officer

KeyFacts Energy: RES UK country profile