Spot The Battery
RheEnergise have just released this picture, of one of how one of their pumped storage systems might look.
They describe it as a typical small site after landscaping.
This is their description of the image.
This is an image of a small water works in Fife Scotland, you can just see 2 small water tanks at the base of the hill. This is an example of what a small High-Density Hydro project could look like after landscaping.
How many times have you seen a scene like this in the UK, Europe and all over the world.
They didn’t disclose the storage capacity of this system.
Holy Grail Of Energy Storage Receives Two Grants
The title of this post, is the same as that of this article on Off Grid Energy Independence.
This is the introductory paragraph.
RheEnergise is one of only a select handful of businesses to have been awarded grants under both the Sustainable Innovation Fund & the Small Business Research Initiative.
So what have RheEnergise developed?
The home page of their web site, is surprisingly detailed, unlike those of some other companies with new ideas, and not just energy storage companies!
This is the first paragraph on their home page.
RheEnergise is bringing innovation to pumped hydro storage. We call our new solution High-Density Hydro ™.
I think that is a good start, as although pumped hydro storage is well proven and the UK has the 1,728 MW Dinorwig Power Station, which has a storage capacity of 9.1 GWh, building new large pumped storage systems is fraught with difficulties and the technology has seen only modest innovation in the last few decades.
The next paragraph on their home page describes their innovation.
HD Hydro ™ uses our proprietary HD Fluid R-19 ™, which has 2.5x the density of water. R-19 gives RheEnergise projects 2.5x the power and 2.5x the energy when compared to water.
This means that for the same size of pumped hydro storage power station, you get 2.5 times the amount of energy storage.
Alongside a diagram of the system, the advantages of their systems is stated.
Projects can be installed on hills 2.5x lower than a project using water and still achieve the same power – for example, there are so many more hills at 150m than at 375m.
2.5x smaller, by volume, meaning dramatically lower construction costs, faster build times, easier reinstatement and easier landscaping – projects can be entirely hidden.
A very simple innovation has greatly increased the possibilities of pumped hydro storage.
The home page also gives a typical capacity.
RheEnergise projects provide 10MW to 50MW power and 2 to 10 hours of storage capacity.
These systems are in the same range as those of Highview Power, who are building a 50 MW system, with a five hour capacity at Carrington near Manchester, that I wrote about in Highview Power Breaks Ground on 250MWh CRYOBattery Long Duration Energy Storage Facility.
Both have the advantage, that they are easily scalable.
With RheEnergise’s HD Hydro ™, the size of the upper reservoir would need to be increased and with Highview Power’s CRYOBattery, more tanks for the liquid air would need to be added.
The Technology
I certainly agree with the principle behind ReEnergise, both mathematically and practically.
My interest scientifically, is what is the fluid they use?
- Pure water has a specific gravity of one and everything else is measured with respect to this.
- So aluminium, which has a specific gravity of 2.7, is 2.7 times as heavy as water.
- Many of us will be familiar with mercury, which is a metal, that is liquid at room temperature.
- Mercury has a specific gravity of 13.56.
It puzzles me, how someone has created a liquid, almost as heavy as aluminium, that can be pumped and handled like water, as it would need to be, to make a pumped storage system work.
The Anonymous Widower 