Nostromo Energy is a provider of the IceBrick system, a virtual power plant (VPP)-enabled thermal energy storage solution designed for commercial and industrial (C&I) buildings. The IceBrick technology utilizes ice to store energy when electricity prices are low or renewable energy is abundant. During peak demand hours, the stored energy is discharged to avoid purchasing expensive and carbon-intensive electricity, reducing the building's cooling costs and carbon emissions.
The IceBrick system operates by freezing water into ice capsules during off-peak periods using low-cost electricity. This stored "cold energy" is then released to cool the building's air conditioning system when electricity demand and rates are high. The modular IceBrick units are non-flammable and can be easily retrofitted into existing C&I buildings, providing a safe and efficient alternative to conventional air conditioning systems.
Nostromo's technology has gained significant traction, with notable deployments including a 1.4 MWh system at the Beverly Hilton and Waldorf Astoria Beverly Hills hotels in June 2023. The company has also secured agreements to install systems at various office buildings and retail centers across the US.
In August 2023, the US Department of Energy (DOE) Loan Programs Office invited Nostromo into due diligence and term sheet negotiations for a loan worth up to USD 176 million. If approved, this loan would finance the installation of the IceBrick system in up to 120 C&I buildings across the US, with an aggregated capacity of 100MW/275MWh.
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