popular articles

Greenwater project boosts energy stability in the American Northwest

The Greenwater project, a 200 MW energy storage system, is designed to improve Puget Sound Energy's energy management, meeting the growing demands for reliability in the Washington region.

Please share:

The energy sector in the northwestern United States is facing increased pressure from rising demand for electricity, particularly in the areas served by Puget Sound Energy (PSE).
The Greenwater Battery Energy Storage System (BESS) project, with a capacity of 200 MW/800 MWh, is designed to meet these challenges by providing a reserve of energy that can be mobilized during periods of high demand or when renewable energy production fluctuates.
This project is part of a growing trend in which storage systems are playing a crucial role in balancing power grids.
As renewable production capacities increase, the question of energy storage becomes essential to guarantee grid stability.
Greenwater provides a direct response to this issue, enabling stored energy to be discharged as and when required, thus reinforcing security of supply throughout the area covered by PSE.

Cost and infrastructure optimization

Unlike traditional transmission infrastructures, which are often costly and time-consuming to deploy, the Greenwater project has the advantage of reducing the need for new transmission lines.
Located in Pierce County, close to centers of consumption, it limits investment in long transmission infrastructures, which are both costly and have an impact on the environment.
Storage systems like Greenwater are also more flexible and responsive.
By storing energy when it is produced in excess (notably from renewable sources such as solar and wind power), BESS can then redistribute this energy during consumption peaks, thus avoiding shortages and reducing dependence on non-renewable energy sources during these critical periods.

A project in line with regional objectives

The Greenwater project is in line with the regional objectives set by the Western Resource Adequacy Program (WRAP), whose aim is to guarantee a reliable and affordable energy supply in the Northwest region of the United States.
The flexibility provided by this storage system will contribute to the optimal management of renewable electricity production, facilitating the integration of intermittent energies into the grid while ensuring continuity of service.
In addition, compliance with the requirements of the Clean Energy Transformation Act (CETA) requires Puget Sound Energy to increase the share of renewable energies in its energy mix, while guaranteeing maximum reliability.
The Greenwater project meets these legal obligations by strengthening PSE’s ability to maintain continuous service, even in the most extreme conditions, such as intense heat waves or cold.

Economic impact and community benefits

Beyond the technical aspects, the Greenwater project also represents a significant economic gain for the region.
The implementation of this storage system will generate significant fiscal spin-offs, estimated at $43 million, which will directly benefit local infrastructures such as schools, emergency services and public transport.
The project also plans to support education by funding STEM (science, technology, engineering and mathematics) programs in local schools, a key element in strengthening the skills of younger generations in rapidly developing sectors such as renewable energies.
This support for education is seen as a strategic investment in the region’s future, helping to train tomorrow’s talent.

Long-term prospects and emerging business models

The Greenwater project is part of a series of initiatives aimed at strengthening the region’s energy independence, while paving the way for a business model in which energy storage will play a central role.
The multiplication of similar projects is essential to enable energy companies to better manage the intermittent production of renewable energies and guarantee reliable service in all seasons.
The returns on investment for Puget Sound Energy and its partners should be significant, both in terms of reduced operating costs and improved grid stability.
With increased storage capacity, the company will be able to better anticipate fluctuations in demand and avoid the penalties associated with service cuts or interruptions.
Greenwater’s success could also encourage the development of other storage projects in the region, thereby contributing to the energy transition and the achievement of decarbonization objectives.

Register free of charge for uninterrupted access.

Publicite

Recently published in

The Polish government is backing Ascend Elements with $320mn to build a lithium-ion battery materials plant, marking one of the country’s largest industrial subsidies.
Abundance Energy, sonnen and Energywell launch a residential virtual power plant project in Texas, combining home batteries and smart software to optimise electricity management.
Abundance Energy, sonnen and Energywell launch a residential virtual power plant project in Texas, combining home batteries and smart software to optimise electricity management.
Software provider Twaice announces a set of improvements to help battery storage system operators improve financial performance and manage increasingly complex assets.
Software provider Twaice announces a set of improvements to help battery storage system operators improve financial performance and manage increasingly complex assets.
Taiwanese company HD Renewable Energy won five energy storage projects totalling 300MW during Japan’s long-term decarbonisation power source auction.
Taiwanese company HD Renewable Energy won five energy storage projects totalling 300MW during Japan’s long-term decarbonisation power source auction.
Turbo Energy and Chilean utility Saesa have launched their first joint smart battery installation, marking the Spanish provider’s entry into the South American market.
Chinese battery manufacturer CBAK Energy rose to fourth place in the global 32140 cylindrical cell market, according to data from the Start Point Institute of Research.
Chinese battery manufacturer CBAK Energy rose to fourth place in the global 32140 cylindrical cell market, according to data from the Start Point Institute of Research.
Vattenfall has signed an agreement with Return to operate and optimise a 50-megawatt battery park in Waddinxveen, aiming to strengthen its energy storage portfolio in Northern Europe.
Vattenfall has signed an agreement with Return to operate and optimise a 50-megawatt battery park in Waddinxveen, aiming to strengthen its energy storage portfolio in Northern Europe.
Atlas Renewable Energy and COPEC inaugurate one of Latin America’s largest energy storage systems, strengthening Chile’s power grid stability.
Atlas Renewable Energy and COPEC inaugurate one of Latin America’s largest energy storage systems, strengthening Chile’s power grid stability.
South Korean battery manufacturer LG Energy Solution and French group Derichebourg announced the creation of a joint venture to build a recycling plant near Paris, with a processing capacity of 20,000 tonnes per year.
Copenhagen Infrastructure Partners has signed an agreement to sell 50% of the Coalburn 1 energy storage project to AXA IM Alts, marking a key step in the development of energy infrastructure in the United Kingdom.
Copenhagen Infrastructure Partners has signed an agreement to sell 50% of the Coalburn 1 energy storage project to AXA IM Alts, marking a key step in the development of energy infrastructure in the United Kingdom.
Durapower is seeking partners to open a battery factory in the United States as part of its global expansion plan, with initial contacts scheduled during the ACT Expo in California.
Durapower is seeking partners to open a battery factory in the United States as part of its global expansion plan, with initial contacts scheduled during the ACT Expo in California.
METLEN Energy & Metals and Glenfarne Asset Company announce the acquisition of a portfolio of solar and battery energy storage projects in Chile, with an installed capacity of 588 MW and storage capacity of 1,610 MWh.
METLEN Energy & Metals and Glenfarne Asset Company announce the acquisition of a portfolio of solar and battery energy storage projects in Chile, with an installed capacity of 588 MW and storage capacity of 1,610 MWh.
The European Investment Bank (EIB) and Iberdrola have signed loans worth €108 million to finance improvements to the Valdecañas hydroelectric complex in Spain, aiming to boost energy security and integrate renewable energy sources.
The Office National de l’Électricité et de l’Eau potable launches a large-scale storage programme to absorb production fluctuations from renewable sources.
The Office National de l’Électricité et de l’Eau potable launches a large-scale storage programme to absorb production fluctuations from renewable sources.
Backed by Meridiam, Verkor's Dunkirk facility begins testing ahead of planned production launch in early 2026, with Renault as a primary client.
Backed by Meridiam, Verkor's Dunkirk facility begins testing ahead of planned production launch in early 2026, with Renault as a primary client.
Indexel Engineering partners with UNIGRID to bring 50 MWh of sodium-ion batteries to India, targeting industrial facilities and decentralised storage projects starting in the second half of 2025.
Indexel Engineering partners with UNIGRID to bring 50 MWh of sodium-ion batteries to India, targeting industrial facilities and decentralised storage projects starting in the second half of 2025.
US-based Eos Energy enters the UK market through a memorandum of understanding with Frontier Power covering 5 GWh of long-duration energy storage under the new cap and floor scheme.
EVLO and Eastern Power Solutions have completed the commissioning of a 4 MW solar-plus-storage installation on the island of Tutuila, marking the launch of a 10 MW project aimed at strengthening the local power grid.
EVLO and Eastern Power Solutions have completed the commissioning of a 4 MW solar-plus-storage installation on the island of Tutuila, marking the launch of a 10 MW project aimed at strengthening the local power grid.
Driven by rising grid resilience demands and renewable energy growth, the US battery storage market is set to expand at 26.8% annually through 2029.
Driven by rising grid resilience demands and renewable energy growth, the US battery storage market is set to expand at 26.8% annually through 2029.
Chinese firm Sinexcel has launched a logistics station equipped with a hybrid lithium-sodium system, marking a global first in integrating grid-connected energy storage with urban drone logistics.
Chinese firm Sinexcel has launched a logistics station equipped with a hybrid lithium-sodium system, marking a global first in integrating grid-connected energy storage with urban drone logistics.
TagEnergy and Banque des Territoires launch a three-year investment partnership to co-finance several battery storage projects, including France’s largest facility located in Cernay-lès-Reims.
The Thacker Pass mine site, led by Lithium Americas and General Motors, launches with major public funding and national industrial ambitions for lithium supply in the United States.
The Thacker Pass mine site, led by Lithium Americas and General Motors, launches with major public funding and national industrial ambitions for lithium supply in the United States.
Swedish battery manufacturer Northvolt will lay off more than half its workforce while partially maintaining operations during the bankruptcy process initiated in March.
Swedish battery manufacturer Northvolt will lay off more than half its workforce while partially maintaining operations during the bankruptcy process initiated in March.
Sungrow will supply its liquid-cooled PowerTitan 2.0 system for the Kalanti BESS project, a 50 MW/100 MWh facility developed by Renewable Power Capital in southwest Finland.
Sungrow will supply its liquid-cooled PowerTitan 2.0 system for the Kalanti BESS project, a 50 MW/100 MWh facility developed by Renewable Power Capital in southwest Finland.

Advertising