Pumped Hydro Storage: Revolutionising renewable energy stability
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- Опубліковано 6 сер 2024
- In this episode, we delve into the crucial problem of maintaining grid stability amidst the injection of intermittent renewable power. Unlike traditional battery systems, electrochemical methods of storage have limitations in scalability, making them impractical for large-scale storage requirements. That’s where pumped hydro storage comes into play.
Pumped hydro storage operates through a closed-loop system, utilising an upper reservoir and a lower reservoir to store and generate electricity. By pumping water from the lower reservoir to the upper reservoir during periods of excess electricity, energy is stored. When electricity is needed, the water flows down, turning a turbine to generate electricity. Despite a slight loss of efficiency, the economics of pumped hydro storage remain favorable.
The advantages of pumped storage are twofold. Firstly, it offers the ability to scale up storage capacity according to demand, making it an ideal solution for addressing dynamic supply and demand challenges. Secondly, pumped hydro storage is the most cost-effective method of storing electricity, surpassing the affordability of new coal power plants.
The potential for pumped hydro storage in India is vast, with numerous suitable sites featuring topographical variations. Notably, Greenko, a leading renewable energy company, is constructing the world’s largest pumped hydro storage system with a capacity of 1,680 MW in Andhra Pradesh. Moreover, the Central Electricity Authority estimates a pumped storage potential of 103 GW in India, with multiple projects already in operation or under development.
To facilitate the growth of pumped hydro storage projects, the Indian government has issued guidelines that empower state governments to allocate projects and streamline the process. Furthermore, pumped hydro projects are exempt from certain levies, making them an attractive option for developers and investors.
With significant projects underway, including those by Greenko, JSW Energy Ltd, NTPC, Tata Power, and Power Grid Corporation of India, pumped hydro storage is poised to meet the challenges of grid stability in the face of increasing renewable energy integration.
Stay tuned for our next video, where we explore another promising technology, redox flow batteries, as we continue our quest to unlock the full potential of renewable energy and ensure a sustainable future. Subscribe now to be part of the energy revolution!
Chapters:
00:00-00:59- Introduction.
01:00-02:42 -Need for pumped storage.
02:42-03:10 -What is pumped storage?
03:10-05:35 -Advantages of pumped storage.
05:35-06:00- Flipside.
06:00-09:00- Conclusion.
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Very informative and in depth analysis…
Looks promising
Apart from that it can be even used in flood management as well when water at the upstream of a dam increases then that water can be pulled up and stored by pumped hydro storage plant at its upstream till a certain point.
I think this idea can even be used for irrigation in hilly areas as well by pulling up the water from upstream of a dam located in valley and can be distributed through pipelines to other surrounding areas as well.
But we must ensure that Electricity needed to pull the water up must be cheap. That's challenging.
Is electricity generation possible when the water travels upstream??
The last question is interesting. While I'm not an engineer, I think that while generating electricity while the water is traveling upstream is technically possible, it would mean even more energy to push it upwards through a turbine. So, it'd be economically infeasible.
Using PSP as a tool of flood management may be difficult because the storage tanks would be far too small to hold the flooding waters. In any case, most of the pumped storage projects are closed loop, not connected to a river.
But thanks for the questions.
Regards
Ramesh
@@RameshMatham0507 Thank you for giving time to address my doubts sir.
Other than turbine any other options to generate power while water is travelling upstream?
Yes most of them are closed loop but is it feasible to establish PSPs on upstream of a dam especially in Hilly areas so that water can be used for power generation when dam stores the water.
Even top-up wouldn't be needed when PSPs are established at the water storage end of the dam.
@@SaiPraneethMullapudi Dear Sai, there is no other means to capture the kinetic energy of flowing water than placing a turbin in its path. It is indeed feasible to put a PSP in a dam, it is actually done in many places. But the functions is a hydroelectric project and a PSP are different. While a hydro electric project produces electricity, the PSP only stores the energy.
@@RameshMatham0507 thanks for the info sir. In green shift playlist 2 videos are not available if possible please make them available by contacting the team.
Sir u am from Orvokal mandal kurnool .our lands are filled with high tension wires
This technology is very expensive, my HHG is the answer, cheaper and easily maintain.