Pumped Storage Hydropower is Superior to Regular Dams

Pumped Storage Hydropower is Superior to Regular Dams

Pumped Storage Hydropower

Pumped storage hydropower is a renewable energy technology that uses the power of water to generate electricity. When water is pumped from a lower reservoir to a higher one, it can be used to turn turbines, which in turn produce power. PSH is an important part of the renewable energy portfolio because it’s intermittent ; meaning that it can only generate power during peak hours – and doesn’t require large amounts of land or costly infrastructure.

What is Pumped Storage Hydropower

Pumped storage hydropower (PSH) is a type of hydroelectric power plant in which water is pumped from a lower reservoir to a higher reservoir, then released to flow back down through the turbines. The difference between the two reservoirs changes the hydraulic head, or pressure, at the turbine inlet and thus how much power the turbines can generate.

The first pumped storage plant was built in 1907 in Switzerland. Since that time, PSH has increased in popularity because it has many advantages over other types of hydroelectric plants. For example, PSH can be used to generate power even when there isn’t enough water available in an upstream reservoir.

The Big Chino Valley project in Arizona is the biggest pump storage plant in the U.S and is currently under development. Once completed, it will have an installed capacity of 2,000 MW.

Types of Pumped Storage Plants

Pumped storage hydropower is a clean and a renewable energy source that can be used to generate power when the demand for electricity is high and the available resources are dwindling. There are two types namely; open loop and closed loop pump storage plants.

Open Loop Hydropower Plants

Let’s take a fascinating journey into the world of Open Loop Pump Storage Plants! These marvelous marvels of engineering take advantage of the natural flow of rivers and other water sources to power our energy needs.

First, imagine a gigantic artificial reservoir, affectionately known as the lower reservoir, sitting patiently below the main power plant. This reservoir eagerly awaits its fill of flowing water from the nearby river or stream. As the water flows into the lower reservoir, it’s like a superhero gaining power from a radioactive spider bite, increasing its gravitational potential energy to superhero levels.

But wait, there’s more! The water is then pumped up to the upper reservoir, using massive pumps that would make the Incredible Hulk proud. This process further increases the potential energy of the water, like a rocket being fueled up for an intergalactic journey.

Now, it’s showtime! The water is released from the upper reservoir, racing downstream like a high-speed train on a mission. But before it reaches its final destination, there’s one more surprise. The lower reservoir can also function as a hydroelectric dam, complete with flood gates that generate even more electricity. It’s like having a hidden talent that you bust out at the right moment to impress your friends.

In conclusion, Open Loop Pump Storage Plants are like the superhero of the energy world, harnessing the power of water to generate electricity and save the day.

Closed Loop Hydropower Plants

Now! Get ready to dive into the captivating world of closed-loop hydroelectric power systems These powerhouses are like a well-oiled machine, with a controlled volume of water circulating continuously within.

Picture this: powerful jets of water surging through the main penstock, like a fierce dragon breathing fire. These jets are released with such force that they create a high-water hammer pressure that could make even the bravest knight tremble.

But wait, there’s more! This ingenious system includes supplementary pipes that bring water from the reservoir, like a faithful servant dutifully obeying its master’s commands. This water is directed to the main penstock during the high vacuum phase, which happens right after the expulsion of an immense volume of water from the penstock.

It’s like a carefully choreographed dance, with each step designed to maximize the system’s efficiency and power output. And let’s not forget the jets, which are so powerful they could probably blast a hole through a mountain if given the chance.

Pumped Storage Hydropower

In conclusion, closed-loop hydroelectric power systems are like the ultimate power duo, with water and engineering working together in perfect harmony. It’s like having your own personal superhero team at your beck and call, ready to save the day and power your world.

Benefits of Pumped Storage Hydroelectricity

There are numerous benefits that come with pumped storage hydropower, we have put together a list that addresses the most significant reasons why countries opt to build PSH:

1. It is a renewable source of energy. This is true for all hydropower. We can never really run out of water as quickly as we are going to run out of fossil fuels.

2. It can generate power during hours of high demand, like during peak hours when the grid needs more power, and then be used to store the energy for later use.

3. It is always available, unlike other forms of hydropower. Even when there isn’t enough rain to fill up a reservoir, they can still draw on water from the lower reservoir.

4. There is a reduced risk of flooding since most of the water is kept in the lower reservoir, which is much closer to sea level than regular hydroelectric dams.

5. Pumped storage hydropower is environmentally friendly, as it does not produce greenhouse gases. Once more, this applies to all forms of hydropower.

6. Pumped storage hydropower is cheaper than some forms of electricity generation, such as coal or natural gas. However, it is not as cost-efficient as solar power.

Drawbacks of Pumped Storage Hydroelectricity

There are a few major drawbacks to pumped storage hydropower:

1. It can be much less efficient than other forms of hydropower. This is because the efficiency of a pumped storage facility is based on the difference in water levels between the upper and lower reservoirs. When the water level in the reservoir falls, more power is needed to raise it back to its original level, which itself consumes power.

2. Open Loop Pumped storage facilities can be relatively inefficient when drawing power from the river at high flow rates. In these cases, the pumps need to run constantly in order to keep up with the high flow rate, which reduces overall efficiency.

3. A major drawback is that it can be quite an expensive proposition. To build a pumping station capable of pumping water to an upper reservoir in order to generate power from a river. You need to invest significant money into both the construction and operation of the facility.

4. Pumped Storage Hydropower plants require a large amount of space; typically, an entire valley or mountain range, which can be difficult to come by. In fact, some experts believe that pumped storage hydropower may eventually become commercially unviable due to these costs.

Pumped Storage Hydropower Plants

Pumped storage hydropower plants solve the availability problem regular dams come with. It does this by pumping water from a lower reservoir to an upper reservoir, where it can be released in controlled amounts to generate power. They come in two kinds of pumped storage hydropower plants: closed-loop and open-loop.


In the quest for a sustainable future, we must explore every avenue to reduce our carbon footprint. One of the promising paths we can take is to embrace renewable energy, such as pumped storage hydropower.

While hydropower has always been hailed as a clean and efficient source of energy, it does have some limitations. Think of it as a beautiful flower that blooms only when the rain comes. Just like a garden, dams require a steady supply of water to fill up and generate power. Moreover, building dams across rivers can be compared to a game of Tetris, where finding the right spot to place them can be a tricky feat.

But despite these challenges, pumped storage hydropower still offers a glimmer of hope in our fight against climate change. Like a beacon of light in the darkness, it provides a reliable source of energy that can be tapped into whenever we need it the most. So let’s continue to explore and invest in this technology, as we strive towards a cleaner, brighter future for all.

2 Responses

Leave a Reply

Your email address will not be published. Required fields are marked *

sEARCH Posts


Pumped Storage Hydropower

Lastest Posts