Hydropower, recognized for its longstanding role in electricity generation, has recently been spotlighted for its crucial function in the shift towards a cleaner power system.
Several significant findings underscore its importance in the broader adoption of renewable energy technologies.
In Alaska, research indicated an abundant potential for pumped storage hydropower (PSH) development, with over 1,800 suitable sites identified. This opportunity could support Alaska’s transition to a renewable-powered grid.
A simulation of the Railbelt grid, which serves much of Alaska’s population, projected up to 600 megawatts of long-duration PSH capacity needed by 2046 alongside other energy storage forms like batteries. However, batteries tend to be more cost-effective for Alaska’s remote communities.
The role of hydropower is projected to evolve, especially in regions increasingly reliant on variable wind and solar power supply.
Traditional hydropower plants, currently valued for energy provision, will gain significance for their flexible generation capabilities, and the ability to ramp up or down generation to balance the variable output of other renewables.
This ramping up and down for grid balance is expected to appreciate in value as the grid evolves.
For PSH, the importance of long-duration energy storage is underlined.
As renewable energy generation becomes more common, PSH facilities are anticipated to play a key role in smoothing out the inconsistencies of wind and solar by storing excess energy and releasing it during times of shortage.
Grid operators might need to recalibrate their strategies for utilizing hydropower in their quest to meet clean-energy targets.
Additionally, innovative solutions like geomembrane liners for PSH reservoirs could improve efficiency by reducing water leakage, laying the groundwork for more effective energy storage.
