About
Meet the developers
Seagreen is an offshore windfarm owned by SSE Renewables (49%), TotalEnergies (25.5%) and PTTEP (25.5%).
SSE Renewables led on the development and construction of the windfarm, supported by TotalEnergies, and is the operator. First power was achieved in August 2022 and Seagreen became fully operational in October 2023.
PTTEP joined the consortium in 2024.
SSE Renewables is a leading developer and operator of renewable energy, headquartered in the UK and Ireland, with a growing presence internationally.
Part of SSE plc, the UK-listed energy infrastructure company, its strategy is to lead the transition to a net zero future through the world-class development, construction and operation of clean power assets across a diverse mix of renewable technologies.
SSE Renewables is investing around £7bn to 2027, or almost £4m a day on average, to support the delivery of SSE’s Net Zero Acceleration Programme to address climate change head on.
This includes plans to increase installed renewable energy capacity to around 9GW by 2027, including the delivery of the world’s largest offshore wind farm in construction.
SSE Renewables has a team of around 1,800 renewable energy professionals based across the UK and Ireland, Continental Europe, and Japan, all committed to delivering the green energy the world needs now and in the future.
TotalEnergies is a global integrated energy company that produces and markets energies: oil and biofuels, natural gas and green gases, renewables and electricity. Our more than 100,000 employees are committed to provide as many people as possible with energy that is more reliable, more affordable and more sustainable. Active in about 120 countries, TotalEnergies places sustainability at the heart of its strategy, its projects and its operations.
As part of its ambition to get to net zero by 2050, TotalEnergies is building a world class cost-competitive portfolio combining renewables (solar, onshore and offshore wind) and flexible assets (CCGT, storage) to deliver clean firm power to its customers. At the end of 2023, TotalEnergies’ gross renewable electricity generation installed capacity was 22 GW. TotalEnergies will continue to expand this business to reach 35 GW in 2025 and more than 100 TWh of net electricity production by 2030.
In the UK TotalEnergies is a leading oil and gas operator, operating around 30% of the UK Continental Shelf’s gas production, with average daily production of 142,000 barrels of oil equivalent per day in 2023.
They have invested in several offshore wind developments in the UK which will have the capacity to deliver over 5GW of renewable power this decade, including Seagreen (1.1GW) which became fully operational in October 2023, West of Orkney (2GW) and Outer Dowsing (1.5 GW). We are also developing a portfolio of solar projects totalling around 500MW.
They are one of the UK’s largest suppliers of gas and electricity to businesses and the public sector. They also offer electric vehicle charging solutions and market petroleum products including lubricants, aviation fuel, bitumen and specialty fluids.
PTT Exploration and Production Public Company Limited (PTTEP) is Thailand’s leading energy company, covering business areas in petroleum exploration, development, and production, alongside pioneering efforts in renewable energy, new forms of energy, and advanced technology, committed to fostering sustainable future growth.
PTTEP sets forth to reach Net Zero Greenhouse Gas (GHG) Emissions by 2050 and transition into a low-carbon organization. Focusing on our E&P operations, PTTEP operates over 50 projects in more than 10 countries across several regions with a primary focus on Southeast Asia and the Middle East as well as other petroleum-prolific areas.
The company emphasizes on implementing cleaner practices within our E&P activities to support GHG emissions reduction goal. PTTEP initiated Thailand’s first Carbon Capture and Storage (CCS) project study at Arthit gas field in the Gulf of Thailand, along with studying the Carbon Capture and Utilization (CCU) technologies. Beyond oil and gas, PTTEP has diversified into new businesses embracing renewable energy and new forms of energy such as the Seagreen Offshore Wind Farm project in Scotland, UK and the Green Hydrogen project in Oman, demonstrating our commitment to pioneering sustainable energy solutions for a greener future.
Image: The first transformer delivery destined for Tealing preparing to leave the Port of Dundee.
Ten years of development
In 2010, the Crown Estate awarded Seagreen Wind Energy Limited (now a joint venture between SSE Renewables (49%), TotalEnergies (25.5%) and PTTEP (25.5%) was awarded the exclusive development rights for the Firth of Forth Zone of the UK's Round 3 offshore wind farm development programme. The Zone, located over 27km from the Angus coastline, covers an area of around 3,091 Km2 in the outer Firth of Forth.
Seagreen Wind Energy Ltd (SWEL) has worked closely with stakeholders and undertaken extensive surveys and assessments to develop the Seagreen offshore wind farm. 114 turbines are currently under construction with a 1,075MW installed capacity.
The original Seagreen consent provided for up to 150 turbines. SWEL is progressing plans for the connection of the remaining 36 turbines which is known as the Seagreen1A project. You can find out more about the Seagreen 1A project by clicking here.
Separately, SSE Renewables is developing proposals for an additional wind farm within the Firth of Forth Zone. You can find out more about the proposals for the Berwick Bank offshore wind farm by clicking here.
Sensitively located
The location and layout of the Seagreen offshore wind farm has included extensive assessment taking into account the potential impacts on marine wildlife, bird populations and landscape and visual.
The map shows the location of Seagreen in relation to the Angus coastline.
This map shows the export cable route for the first phase of 114 turbines from Seagreen to the Tealing substation.
For more information about the connection for the remaining 36 turbines into Cockenzie, East Lothian, please click here.
In both cases the electricity generated by Seagreen will be transmitted to the substations via subsea and underground cables.