What We Do

Terrafore Technologies LLC (Terrafore) is a Minnesota-based technology development company, active in the fields of energy efficiency and renewable energy with a specific focus on Thermal Energy Storage (TES) for use with Concentrating Solar Thermal Power (CSP), Concentrating Solar Photovoltaics (CPV), industrial processes and buildings.


  • Terrafore’s encapsulated thermal storage reduces cost of storing thermal energy towards meeting Department of Energy’s SunShot cost goal. Terrafore’s capsules TerraCaps can be used to store energy in various salts with melting points from 300 C to 900 C.
    TerraCaps can be used with molten salt CSP, next generation high temperature s-CO2 based CSP and Stirling or Brayton engines, hybrid CPV, in process industries.
  • Terrafore displayed their innovative phase change capsules for storing thermal energy at the ARPA-E Transformative Energy Solutions Summit Showcase.
    Read this article in IEEE Spectrum
  • Terrafore’s dynamic mathematical models of various CSP – TES configurations using various Thermal Energy Storage and Solar Receivers (Solar Tower, Parabolic Trough and Linear Fresnel) were used to analyze the dynamic response to different utility dispatch profile and ancillary services, such as regulation, ramp rate, and day-ahead schedule utility profiles, on California Utility Grid.
    Analysis showed that using a system designed to provide ancillary services and consisting of a very large storage and a power block coupled to the smallest solar collector field (a Solar Multiple of less than one) can be highly profitable.
  • Terrafore provides molten salt expertise for design of 2-tank thermal storage for the 100 MW Crescent Dunes solar thermal project under construction at Tonopah, Nevada.
  • Terrafore developed TerraKline, a patented technology to eliminate degradation of thermocline in a dual-media of granite and molten salt or oil. Energy storage using thermal stratification in dual-media can reduce cost of storing energy by over 35% when compared to a two-tank sensible heat storage in heat transfer fluids.