At Spira Energy we are developing a system for large scale, cost efficient energy storage. If we can efficiently store energy, we can utilize energy from varying renewable energy sources such as sun and wind and phase out fossil energy. The technology is based on a new principle for compressing air which creates unique opportunities for high efficiency. The technology is patented and has already been successful in a series of prototype tests. Now, we plan to start installation of the first machines in 2019.