Ampeak Energy
Ampeak Energy is a renewable-energy company focused on tidal power, hydropower, waste-to-energy and battery energy storage.
Last updated August 27, 2026
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Overview
Ampeak Energy Limited is a renewable-energy business incorporated in Singapore and operationally headquartered in Edinburgh, Scotland. The company is the latest name in a corporate lineage that began as Atlantis Energy, later became Atlantis Resources, then SIMEC Atlantis Energy, and subsequently SAE Renewables before adopting the Ampeak Energy name on 21 August 2025. Its historical core was the development of tidal-stream turbines and tidal-energy projects, particularly the MeyGen array in Scotland's Pentland Firth. Over time, the company broadened its activities into hydropower, waste-to-energy and grid-scale battery storage. The business originated in Brisbane, Australia, and established a Singapore base in 2005. Although Singapore remained the place of incorporation, its operational centre moved to Edinburgh in 2014. A major turning point came in November 2013, when the company acquired the MeyGen project, described as Europe's largest tidal-energy project. In February 2014, the company became the first tidal-energy business to float on the London Stock Exchange's AIM market. Construction at MeyGen began around the same period, and the first major phase, known as Phase 1A, was completed in 2017. The phase involved four 1.5 MW turbines and established MeyGen as one of the world's most significant tidal-stream demonstration and generation projects. The Scottish Government provided a £1.5 million grant to the project in 2020. Between 2015 and 2016, the company expanded its tidal portfolio and technical capabilities. It acquired Marine Current Turbines from Siemens, including the SeaGen turbine and a collection of project sites. It also acquired the 100 MW Ness of Duncansby project and a 10 MW project in the Sound of Islay from ScottishPower Renewables. The company later concentrated on its most advanced opportunities and returned leases for projects at Kylerhea and Anglesey Skerries to the Crown Estate. In 2017, GFG Alliance acquired a 49.99% interest in the business in connection with the proposed redevelopment of the Uskmouth power station in Wales. The station was intended to be converted into a 220 MW waste-to-energy facility, and the transaction was followed by the change from Atlantis Resources to SIMEC Atlantis Energy. The Uskmouth conversion subsequently faced planning difficulties and was abandoned in April 2022. The company also entered the hydropower sector through its 2019 acquisition of Scottish developer Green Highland Renewables. International activity included tidal-energy demonstration projects in China and Japan. In Japan, a subsidiary supplied and deployed a 500 kW AR500 turbine in the Goto island chain for Kyuden Mirai Energy. The unit was manufactured in Scotland, shipped to Japan and began producing power in early 2021. It was later decommissioned and was expected to be upgraded for possible redeployment. The company also participated in Chinese tidal-turbine development with Chinese industrial and energy partners, and held an interest in a proposed tidal project in France. These turbine-development and engineering activities were separated from the main business in 2022 through a management buyout that created Proteus Marine Renewables, in which SAE retained a minority interest. Ampeak's current project portfolio includes the MeyGen tidal array and battery-storage development. In partnership with EDF Energy, it is developing the AW1 Battery Energy Storage System at Uskmouth. The project was initially described as a 120 MW/240 MWh system and was being expanded to 480 MWh of storage capacity in 2025. The company has also proposed other tidal and storage projects, including the Wyre tidal barrage and a large battery project in northern Scotland. Its business model combines ownership and development of renewable-energy assets with project development, operations and partnerships rather than a conventional consumer-facing energy-retail brand.
History
The business began as Atlantis Energy in Brisbane, Australia. It established a base in Singapore in 2005, where the company remained incorporated, while its operational headquarters later moved to Edinburgh in 2014. Its early work centred on tidal-stream technology. In 2002, the predecessor business tested a 100 kW Aquanator device in Victoria, Australia, and connected it to the electricity grid in 2006. The company subsequently tested Nereus turbines and the Solon series, including devices with capacities ranging from several hundred kilowatts to 1 MW. The company acquired the MeyGen tidal project in November 2013. Located in the Pentland Firth north of mainland Scotland, MeyGen became the principal development in its portfolio and one of the most important tidal-energy projects in Europe. In February 2014, Atlantis became the first tidal-energy company to float on the London Stock Exchange's AIM market. Construction at MeyGen commenced, and Phase 1A was completed in 2017 with the deployment of four 1.5 MW turbines. The project later received a £1.5 million Scottish Government grant in 2020. Atlantis's turbine programme included the AK-1000, unveiled in 2010 as a 1 MW dual-rotor turbine, and the AR1000, a single-rotor turbine tested at the European Marine Energy Centre and subsequently used for drivetrain testing. In 2013, the company partnered with Lockheed Martin on the AR1500, a 1.5 MW turbine intended for MeyGen. Between 2015 and 2016, it expanded through the acquisition of Marine Current Turbines from Siemens, including the SeaGen turbine and several development sites. It also acquired the Ness of Duncansby project and a tidal project in the Sound of Islay from ScottishPower Renewables. Some less-developed leases were later returned to the Crown Estate. A major strategic change occurred in 2017, when GFG Alliance obtained a 49.99% stake in the company in exchange for the Uskmouth power station. The station was intended to become a 220 MW waste-to-energy plant, and Atlantis Resources changed its name to SIMEC Atlantis Energy. The project was called in for planning consideration by the Welsh Government in early 2021 and was abandoned in April 2022. The company diversified further by acquiring Scottish hydropower developer Green Highland Renewables in 2019. The business developed international demonstration projects. In China, it worked with China Shipbuilding Industry Corporation and China Three Gorges Corporation on a 500 kW tidal turbine installed in the Zhoushan archipelago. In Japan, Atlantis Operations Japan supplied a 500 kW AR500 turbine for Kyuden Mirai Energy. Manufactured at the Nigg Energy Park in Scotland, the turbine was installed in the Goto island chain and produced its first reported energy in early February 2021. It was later decommissioned, with plans described for an upgrade and possible redeployment. In October 2022, the Advanced Tidal Engineering and Services division was separated through a management buyout. The new company, Proteus Marine Renewables, received the division's engineering staff and intellectual property and continued to supply turbines for projects including MeyGen. SAE retained a 21% minority stake. The separation reduced the direct scope of the main company’s turbine-manufacturing activities while preserving a relationship with its former engineering division. Other development proposals included a 160 MW Wyre tidal barrage on the River Wyre, a planned project involving Natural Energy Wyre, and a proposed 300 MW battery-storage facility in northern Scotland. The latter attracted opposition from Highland councillors because of its potential visual and tourism impacts near the Castle of Mey and the North Coast 500 route. In partnership with EDF Energy, the company is developing the AW1 Battery Energy Storage System at Uskmouth. The project was initially described as 120 MW and 240 MWh and was being expanded to 480 MWh in 2025. On 21 August 2025, SIMEC Atlantis Energy Limited changed its name to Ampeak Energy Limited. The renamed company remains associated with renewable-energy project development, particularly tidal generation and battery storage, while its former turbine-development activities are principally represented by Proteus Marine Renewables.
- 2025
Ampeak Energy name adopted
[1]The company changed its legal name from SIMEC Atlantis Energy Limited to Ampeak Energy Limited.
- 2022
Proteus Marine Renewables formed
[1]The Advanced Tidal Engineering and Services division was transferred to Proteus Marine Renewables through a management buyout.
- 2020
MeyGen grant and Japan programme
[1]MeyGen received a Scottish Government grant, while the company advanced its Japanese AR500 demonstration programme.
- 2019
Green Highland Renewables acquired
[1]The company expanded into Scottish hydropower through the acquisition of Green Highland Renewables.
- 2017
MeyGen Phase 1A completed
[1]Four 1.5 MW turbines were designed, manufactured and deployed for Phase 1A.
- 2017
GFG Alliance investment and rebrand
[1]GFG Alliance acquired 49.99% of the company, which was renamed SIMEC Atlantis Energy.
- 2014
AIM listing and MeyGen construction
[1]Atlantis became the first tidal-energy company to float on AIM and began construction at MeyGen.
- 2013
MeyGen acquired
[1]Atlantis Resources acquired the MeyGen tidal-energy project in the Pentland Firth.
- 2005
Singapore base established
[1]The company established a Singapore base, which remained its place of incorporation.
- 2002
Early Aquanator tidal-device testing
[1]The predecessor business tested a 100 kW Aquanator tidal device in Victoria, Australia.
Products and positioning
A project developer and operator focused on marine renewable energy and complementary infrastructure, with additional activities in hydropower, waste-to-energy and utility-scale battery storage.
Tidal-energy project · 2013
MeyGen
MeyGen is Ampeak Energy's principal tidal-energy development in the Pentland Firth. The project was acquired in 2013 and its first major phase comprised four 1.5 MW turbines. It is designed as a commercial tidal-stream array and has served as the company's main platform for demonstrating predictable marine renewable generation in Scottish waters.
Battery energy storage
AW1 Battery Energy Storage System
AW1 is a grid-scale battery-storage project at Uskmouth power station being developed in partnership with EDF Energy. It was initially described as a 120 MW/240 MWh system and was being expanded to 480 MWh in 2025. The project represents the company's strategic move toward flexible power infrastructure alongside renewable generation.
Tidal-stream turbine · 2021
AR500
The AR500 is a 500 kW tidal-stream turbine developed by the company's former turbine-engineering activities. A unit manufactured at the Nigg Energy Park was deployed in Japan for Kyuden Mirai Energy in the Goto island chain. The turbine was later decommissioned and was expected to undergo an upgrade for possible redeployment.
Tidal-stream turbine · 2013
AR1500
The AR1500 was a planned 1.5 MW tidal turbine developed through a partnership with Lockheed Martin. It was intended for use at MeyGen and represented the company's effort to move from demonstration-scale devices toward larger commercial tidal arrays. Turbine-development activities were later separated into Proteus Marine Renewables.
Tidal-energy project · 2020
Wyre tidal barrage
The Wyre proposal is a tidal-barrage concept on the River Wyre between Fleetwood and Knott End. Developed with Natural Energy Wyre, the scheme was described as having 160 MW development potential and approximately 90 MW of electricity-generation capacity. It is a proposed project rather than an operating asset.
Brand decisions
2025
Expanded battery-storage focusStrategyBackground
The company pursued flexible power infrastructure to complement its renewable-generation portfolio.
Action taken
In partnership with EDF Energy, it advanced the AW1 battery project at Uskmouth and increased the planned storage capacity from 240 MWh to 480 MWh.
Aftermath
The expansion positioned battery storage as a major part of the renamed company's development portfolio.
2025
Corporate name changed to Ampeak EnergyOtherBackground
The company had operated under several names as its business developed beyond tidal technology.
Action taken
On 21 August 2025, SIMEC Atlantis Energy Limited changed its name to Ampeak Energy Limited.
Aftermath
The Ampeak Energy identity became the company's current corporate brand.
2022
Separated turbine engineering activitiesStrategyBackground
The company reorganized its tidal technology and engineering activities after years of turbine development and international demonstration projects.
Action taken
The Advanced Tidal Engineering and Services division, related intellectual property and staff were transferred through a management buyout to form Proteus Marine Renewables.
Aftermath
Ampeak's predecessor retained a 21% minority interest, and Proteus continued to supply turbines for MeyGen and other projects.
2017
Accepted GFG Alliance investmentM&ABackground
The company sought to broaden its portfolio beyond tidal power through the proposed redevelopment of Uskmouth power station.
Action taken
GFG Alliance acquired a 49.99% stake in exchange for the Uskmouth power station, and the business adopted the SIMEC Atlantis Energy name.
Aftermath
The proposed Uskmouth waste-to-energy conversion later encountered planning difficulty and was abandoned in April 2022.
Recent events
- 2025
SIMEC Atlantis Energy renamed Ampeak Energy[1]
Other · Leadership change
The company changed its legal name from SIMEC Atlantis Energy Limited to Ampeak Energy Limited.
- 2025
AW1 battery project expansion announced[1]
Product generation
The AW1 battery-storage project at Uskmouth, developed with EDF Energy, was being expanded from its originally stated 240 MWh configuration to 480 MWh.
- 2022
Uskmouth waste-to-energy conversion abandoned[1]
Other · Regulation
After planning intervention and continuing uncertainty, the proposed conversion of Uskmouth power station into a waste-to-energy facility was abandoned.
- 2022
Tidal engineering division separated into Proteus Marine Renewables[1]
M&A
A management buyout transferred the Advanced Tidal Engineering and Services division, related intellectual property and staff into Proteus Marine Renewables.
- 2017
MeyGen Phase 1A completed[1]
Product launch · Product generation
The company announced completion of MeyGen Phase 1A, comprising four 1.5 MW tidal turbines.
- 2017
GFG Alliance acquired a 49.99% stake[1]
M&A
GFG Alliance acquired a 49.99% interest in the company in connection with the proposed redevelopment of Uskmouth power station.
- 2014
Atlantis became the first tidal-energy company to list on AIM[1]
Other
The company floated on the London Stock Exchange's AIM market and commenced construction activities at MeyGen.
- 2013
Atlantis Resources acquired MeyGen tidal-energy project[1]
M&A · Other
The company acquired the MeyGen project in Scotland's Pentland Firth, establishing the project as the centrepiece of its tidal-energy portfolio.
Sources1 sources
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