What is Zero Terrain?
Geotechnical Pumped-Hydro Storage
Pumped-hydro energy storage plants are the most mature and favourable large-scale storage technology, which helps balancing the power system and enables to switch from fossil-based economy to renewable-based economy. The challenge however is the need of mountains which significantly limits suitable locations.
Zero Terrain pumped-hydro storage technology can be used in regions which traditionally lack environmental prerequisites for hydro power projects, e.g. mountains or big rivers. The technological novelty of Zero Terrain Storage Solution is the placement of the lower reservoirs of the pumped storage plants in the Earth’s crust with favourable geology and using the surface water bodies as the upper reservoirs of the plants.
By placing the lower reservoirs in a suitable location on the Earth’s crust, additional income from sales of excavated rock is obtained. In case of the Estonian Pumped-Hydro Energy Storage project, the business plan involves production and sales of 15 million tonnes of chrystalline aggregates, which is to replace an imported high-cost igneous aggregates and low-quality domestic limestone aggregates, where appropriate.
WHAT IS PUMPED STORAGE?
Pumped storage is effectively a big battery
It is charged when there is surplus or low cost electricity, and discharged when that electricity is needed.
Pumped storage can also provide a wide range of electricity system benefits.
What are the advantages of the Zero Terrain solution?
Classical hydroelectric energy storages can only be built in the mountains, whereas the Zero Terrain solution allows hydroelectric energy storages to be built in flat terrain as well.