In Gia Lai province, pumped-storage hydropower is expected to play a central role in stabilizing the grid, improving renewable energy integration, and supporting long-term sustainable development.
Reporters from Gia Lai Newspaper and Radio & Television spoke with Deputy Director of the Department of Industry and Trade, Trần Thúc Kham, about the province’s strategy.
* Mr. Kham, as electricity demand rises rapidly and renewable energy accounts for a larger share of the power mix, what role does pumped-storage hydropower play in ensuring stable and proactive energy security?
- We are entering a period of rapidly increasing electricity demand, aligned with ambitious economic growth targets. At the same time, the energy structure is shifting strongly toward renewable sources such as wind and solar power. This transition is inevitable, but it also introduces significant fluctuations into the system.
The challenge today is not only ensuring sufficient electricity supply, but also maintaining stable and efficient system operations. In this context, pumped-storage hydropower can be considered a critical “hinge” of the power system.
Its operating principle allows electricity to be stored on a large scale. When excess electricity is available—particularly during midday peaks in solar generation—the plant uses that power to pump water to an upper reservoir. When demand increases or renewable output declines, the stored water is released to generate electricity.
This mechanism helps maximize renewable energy use, reduce waste, and lessen dependence on conventional power sources. Pumped-storage hydropower plants can also adjust output very quickly, helping regulate frequency and stabilize voltage, which becomes increasingly important as renewable energy expands.
In that sense, pumped-storage hydropower is not simply a power plant. It is a system-regulation tool that supports proactive and sustainable energy security.
* Given Gia Lai’s strong wind and solar potential, how will pumped-storage projects support renewable energy development in the province?
- Despite the province’s significant renewable energy potential, development has faced limitations due to the grid’s absorption capacity. At times, wind and solar generation has been very high, but output could not be fully utilized because of low demand or transmission bottlenecks.
Pumped-storage hydropower can directly address this issue. With flexible operations, the system can absorb surplus electricity during off-peak hours and release it when demand rises. This reduces renewable energy curtailment and minimizes wasted electricity.
The biggest advantage is improving the grid’s ability to absorb renewable power. With stronger storage infrastructure, the province will have more capacity to attract additional renewable energy projects, particularly in areas where potential remains underdeveloped.
In addition, pumped-storage hydropower provides ancillary services such as frequency regulation, voltage control, and reserve capacity, helping maintain stable system operations despite fluctuations in renewable generation.
Over the long term, these projects will not only improve the efficiency of existing renewable plants but also establish a foundation for sustainable and well-regulated green energy development.
*The Vĩnh Thạnh Pumped-Storage Hydropower Project is the province’s first project of this kind and is currently undergoing preparatory procedures. What measures will Gia Lai take to balance energy development, environmental protection, and socio-economic benefits?
- The Vĩnh Thạnh Pumped-Storage Hydropower Project, located in Vĩnh Thạnh commune, has a planned capacity of 600 MW and a total investment of nearly VND11 trillion (approximately USD423 million). The project has already been included in the revised Power Development Plan VIII and related provincial planning frameworks.
The investor is currently finalizing appraisal documents, with construction expected to begin in 2027.
One advantage of the project is that it will utilize the existing Định Bình reservoir, helping minimize environmental impacts compared with building an entirely new facility. Its closed-loop pump-and-release cycle is also designed to avoid significant impacts on water resources.
However, our position is clear: energy development must go hand in hand with environmental protection. The project will be required to carry out comprehensive environmental impact assessments and maintain strict oversight during both construction and operations to ensure no harmful effects on ecosystems or local communities.
In socio-economic terms, the project is expected to contribute between VND320 billion and VND350 billion annually to the provincial budget (approximately USD12.3 million to USD13.5 million).
But beyond direct revenues, we believe the broader spillover effects are even more important.
The province will prioritize local employment, strengthen vocational training, and encourage local businesses to participate in the project’s service chain. Revenue generated from the project will also be reinvested into infrastructure, education, and other key sectors.
In the longer term, the project is expected to enhance Gia Lai’s competitiveness in attracting investment into renewable energy and green industries. With energy storage infrastructure in place, the province’s power system will become more flexible and more attractive to investors.
More importantly, the project reflects Gia Lai’s broader ambition to develop a synchronized green energy ecosystem that integrates power generation, storage systems, and grid infrastructure.
The objective is not only to increase the share of clean energy, but also to build a modern, secure, and highly adaptable energy system.
We are determined that Gia Lai will not only develop energy to meet immediate demand, but also create a flexible and sustainable green energy ecosystem that can support long-term growth.
The Vĩnh Thạnh Pumped-Storage Hydropower Project represents a new approach to energy development—one focused not only on electricity generation, but also on energy storage, regulation, and system optimization. This will be key to helping Gia Lai unlock its renewable energy potential and strengthen its position in the region’s green energy transition.