Quidnet Achieves Major Milestones in US Department of Energy Contracts News provided by Share this article HOUSTON, April 20, 2021 /PRNewswire/ -- Quidnet Energy (Quidnet) today announced it has achieved two key milestones in its projects with the US Department of Energy's Water Power Technology Office (WPTO) and Advanced Research Projects Agency–Energy (ARPA-E), to commercialize the company's Geomechanical Pumped Storage (GPS) technology. Quidnet pumps water underground and stores it in-between layers of rock. The natural elasticity of the rock performs like a spring and holds the water under pressure until it is needed, at which time it is released through a hydroelectric turbine to produce electricity to send back to the grid.