The ability to effectively store energy is among the most pressing challenges as we move towards a more resilient and sustainable future using renewable energy.
Air conditioning comprises a majority of peak loads, and energy storage is needed to match the intermittent generation of sustainable resources like wind and solar with the relentless power needs of the hottest summer days. TES’ Ice Bear technology is flexible, reliable and enables a more efficient and renewable energy future by storing energy through the simple, abundant, and inexpensive medium of ice.
The Ice Bear product enables customers to be strategic about their electricity consumption from air conditioning: they can take advantage of times when utility rates are lowest to both save money and reduce their carbon footprint. Our Ice Bear line of products turn air conditioners into resilient, efficient and sustainable energy storage. The Ice Bear is a distributed ice-powered battery allowing customers to create up to 40 ton hours of thermal energy storage a day:
- The Ice Bear turns a standard HVAC into a hybrid HVAC with an ice battery
- The Ice Bear is scheduled to charge by freezing ice in an insulated tank
- When dispatched, the Ice Bear turns off the HVAC compressor automatically and provides ice cold refrigerant to the AC unit
- The Ice Bear offers flexible energy storage capacity that can be scheduled to meet the customer’s most pressing cooling needs, typically during the peak electricity consumption period
- Seamless installation of an auxilliary Ice Coil in the HVAC allows Ice Bear to utilize existing air flow of buildings and residences
Ice Bear 40

Up to
21 kW
of on-peak reduction
Up to
8 hours
ice discharge duration
20 tons
AC cooling capacity
- Accommodate multiple HVACs configurations and sizes up to 20 tons
- Provides cooling from stored ice instead of running a HVAC compressor (compressor automatically shut off during ice melt hours)
- Permanent peak load shift of AC loads
- Smart grid controller and mobile connectivity provide real-time control and demand response capabilities

Contact us for pricing, as commercial terms depend on application.
Ice Bear 20

Up to
7 kW
of on-peak reduction
Up to
20 ton hours
ice discharge duration
5 tons
AC cooling capacity
- Ice Bear 20 is an all-in-one AC & thermal energy storage device that fully replaces residential condensing units
- The Ice Bear 20 turns off integrated HVAC compressor automatically when ice is used for cooling
- Supports residential applications that use ductless mini splits and traditional ducted systems
- Smart grid controller and mobile connectivity provide real-time control and programming ability

VIEW TECHNICAL SPECIFICATIONS (pdf)
Contact us for pricing, as commercial terms depend on application.
Benefits
Proven, flexible and highly reliable technology
Cost Savings
Customers realize a 20 to 40% reduction in utility costs
High Efficiency
100% effective efficiency, 85% round-trip efficiency1
Easily Deployable
Long term useful life
Units have a long-term economic life of 20 years+ and will improve the life of HVACs by reducing compressor cycles
Renewable Generation Integration
Enables renewable grid integration by scheduling ice charge and ice dispatch around renewable production
Remotely Monitored
Units are remotely monitored and can be scheduled or programmed for on-demand storage
Emissions Benefits
Ice Bear enables customers to move load to less carbon-intensive and more renewables-weighted hours on the grid
No Hazardous Chemicals
No fire or hazardous chemical risks; storage medium is tap water, all product parts are recyclable
