Electricity Storage, Heating and Cooling in One Device

*Example calculation: 150kW_el Green-Y device, peak-shaving in an office building

Do you want to save money and become green?

Get your Green-Y device with the following steps:

Patented Compressed Air Technology

How Green-Y works: Compressing air creates heat and consumes electricity. Expanding air creates cold and generates electricity. These two main steps are performed separately in time. Therefore, Green-Y unifies the functionalities of a heat pump and a battery by storing electricity and generating heat and cold. The compressed air is stored in commercial pressure tanks which is a durable and inexpensive solution to store electricity.

Innovation: We essentially advanced the well-known compressed air energy storage technology by increasing the energy density by a factor of three and double the heat & cold extraction. This reduces the required storage volume by a factor of three and makes the decentralized application possible. Further, efficient heating and cooling is enabled directly in the building where the thermal energy is needed. The heat energy can be used to provide e.g. hot water for domestic use and room heating and the cold for e.g. cooling the building.

Technology Benefits