GE Research, the technology development arm of General Electric Company (GE), has been awarded a 30- month, $4.3 million project through US Department of Energy’s Water Power Technologies Office to improve both the operating capacity and flexibility of hydropower assets.
A multi-disciplinary team of engineers from GE Research will work with GE Renewable Energy’s Hydro business, and two major hydro plant operators, Eagle Creek Renewable Power, and FirstLight Power, to outfit three plants with minimal sensors and other tools to enhance the existing operational flexibility by more effectively ramping electricity generation up or down with their hydro assets.
Arvind Tiwari, Advanced Technology Platform leader in the Electrical Systems group at GE Research and Principal Investigator on the project, says the pioneering approach will allow hydro plant operators to unlock previously untapped flexibility to help address the transition to a more renewables-intensive grid.
“Hydro power today already is the most flexible and dispatchable renewable resource, but the growth of other variable renewables, such as wind and solar, will require it to become even more flexible and keep the grid in balance, especially as other traditional forms of base load generation come offline or retire,” Tiwari said. “We believe this can be accomplished at minimal cost and disruption by outfitting hydro plants with sensors and other tools that allow hydro units to expand their capabilities.
“Working together with Eagle Creek Renewable Energy, and FirstLight Power, we will have the opportunity to demonstrate our methods in three grid connected hydro plants.”
Tiwari explained that a key objective of the demonstration is to show the increased flexibility and operating capacity of hydro plants with existing components, without compromising the life of plant equipment. Certain hydro plants were initially designed for stable, constant operations with limited flexibility. The GE Research team believes that with more data and great visibility of plant behavior, they can introduce more variability in operations such as fast ramp ups of hydro units without compromising the life of their components.
GE Research’s hydro plant partners, FirstLight and Eagle Creek Renewable Energy, each have significant hydro footprints in the US. FirstLight’s portfolio includes nearly 1400MW of pumped-hydro storage, hydroelectric generation, battery storage, and solar generation in the New England region. Eagle Creek Renewable Energy owns and operates 86 hydroelectric facilities across the US.
As part of the $4.3 million project ($3 million from the DOE, $1.3 million in cost share from GE and its project partners), Tiwari said the GE team will look at a variety of operating scenarios, including the combination of batteries with hydropower and operational improvements for pumped storage hydropower.
Justin Trudell, FirstLight’s Chief Operating Officer, said “We are very excited to work with our institutional partners to help find new ways to enhance hydropower’s already critical contributions to the fight against climate change. Hydro’s flexibility is vital to our efforts to create a cleaner, more sustainable energy future, ensuring that the growing renewable sector is both reliable and resilient.”
Eagle Creek’s Sr. Advisor, Jose Zayas added: “As we continue to decarbonize our electricity system, hydropower can provide significant system benefits to accelerate the transition to a cleaner grid. This research project is a critical step in identifying novel and cost-effective ways to unlocking hydropower’s true potential.”
“As the nation moves through the energy transition, we will need to introduce more resiliency and flexibility into the grid to handle the changes that are coming,” Tiwari stressed. “Hydro is a key renewable asset and tool for not only producing more clean, renewable electricity, but serving as a stable partner in welcoming other renewables generation to the mix as well.”
Images: Pictured at top is Eagle's Creek's High Rock hydro facility in North Carolina, and second is FirstLight's Stevenson Generating Station in Connecticut. Both are among the Eagle Creek and FirstLight facilities being considered for the flexible hydro project demonstrations.