Underwater Compressed Air Energy Storage

A brief review of land based caes storage indicates limited potential only two plants with a total capacity of 400mw 4gwh one of which is 40 years old.

Underwater compressed air energy storage.

7 1 p ρ sw g d where ρ sw is the density of seawater typically 1025 kg m 3 and g is acceleration due to gravity 9 81 m s 2 using equations from chapter. Compressed air energy storage caes is one of the few storage options that this blog has not looked into and here i review how this technology might contribute to an all renewables world. Garvey in storing energy 2016. The gauge pressure in seawater at a depth d is given by.

It is very similar to underground caes in all aspects but the energy store. Toronto hydro has partnered with hydrostor incorporated to connect the world s first underwater compressed air energy storage system to toronto s electricity. Compressed air energy storage it is possible to obtain curves of energy density against depth for an underwater compressed air store assuming the air is stored at a. Uwcaes is a developing storage technology which is a natural extension of caes for coastal environments.

Underwater compressed air energy storage. Underwater compressed air energy storage uw caes a step beyond underground energy storage in caverns may soon offer conventional utilities a means of long duration load shifting for their large scale electrical grids and niche microgrid operators a means of reducing their fossil fuel dependence say its advocates.