Thermal Battery Storage Systems

Trane Thermal Battery™ systems are premier HVAC plants that provide a distributed resource for our changing grid. Their ability to store thermal energy enables your building to reliably modify HVAC operations to optimize for carbon reduction or energy cost savings.

Lower utility bills: Reduce peak electricity demand costs and shift energy use to less expensive and more efficient off-peak periods
Increased Sustainability: Support renewable energy by making it more dispatchable
Greater Agility: Enable flexible operation for a grid interactive building

How our Systems Work

Trane Thermal Battery systems are chiller plants enhanced with thermal energy storage. The chiller plant operates like a battery. It charges when excess or inexpensive energy is available or when you can depend on renewables. It discharges when demand spikes, price is high or when the utility or grid operator asks for help meeting capacity.

Trane Thermal Energy Storage

Air-Cooled Chiller Plant

The Trane® Thermal Battery air-cooled chiller plant is a thermal energy storage system, which can make installation simpler and more repeatable, saving design time and construction costs. Trane offers pretested, standard system configurations for air-cooled chillers, ice tanks, and pre-packed pump skids integrated with customizable, preprogrammed system controls.

Thermal Battery Heat Pump for Water-Cooled Chillers

Storage Source Heat Pump

The all-electric Storage Source Heat Pump system leverages thermal energy storage to provide cooling and heating. It captures waste energy to eliminate traditional heating equipment that relies on fossil fuels.

Customized Solutions

Our experts draw on 30+ years of engineering experience installing more than 1 gigawatt+ of thermal storage to help you design the best solution for your needs. Combine the benefits of Trane’s industry-leading chillers and controls with best-in-class CALMAC® storage tanks.

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Optimize Your Control Strategy

Our assessment tools can help you choose the best control strategy for your application. You can depend entirely upon thermal storage to cool your building or leverage storage plus chillers.

Based on multiple factors — electric rates, building occupancy, carbon emissions and available footprint — we help you identify the best control strategy to reach your financial and sustainability goals.

Learn more about controls

System Components

Compatible Chillers

Series R® Helical Rotary Chiller Model RTAC
At a Glance:
- Capacity Range: 140 to 500 tons
- Refrigerant: R-134a
- Compressor Design: Helical rotary screw
- Energy Efficiency Rating (EER): IPLV: 13.6-15.4 (standard); 14.2-15.9 (high-efficiency); 14.1-15.2 (extra-high-efficiency)
Ascend™ Air-Cooled Chillers Model ACS
- Capacity Range: 140 to 230 tons
- Refrigerant: Low-GWP R-454B
- Compressor Design: Scroll with variable volume ratio
- Energy Efficiency Rating (EER): IPLV: 15.8-16.5
Sintesis® Air-Cooled Chillers
- Capacity Range: 115 to 500 tons
- Refrigerant: Low-GWP R-513A
- Compressor Design: Helical rotary screw
- Energy Efficiency Rating (EER): IPLV: 16.0-18.0 (high-efficiency)
- Enabled by Symbio® 800 unit controller
Scroll Chiller Model CGAM
- Capacity Range: 20 to 130 tons (60 Hz)
- Refrigerant: Low-GWP R-454B
- Energy Efficiency Rating (EER): IPLV: 13.7-16.6 (high-efficiency); 14.5-16.9 (extra-high-efficiency)
- Enabled by Symbio® 800 unit controller
Agility® Centrifugal Water-Cooled Chillers
- Capacity Range: 175 to 425 tons, 60/50 Hz
- Available with next-generation low-GWP R-513A refrigerant
- Best Full-load Efficiency: 0.52 kW/ton (at AHRI conditions)
- Best Part-load Efficiency: 0.31 kW/ton
CenTraVac® Water-Cooled Centrifugal Chiller
- Capacity Range: 200 to 4,000+ tons, 60/50 Hz
- Refrigerant: R-514A and R-1233zd
- Compressor type: Centrifugal
- Low Pressure
Series R™ Helical Rotary Screw Chillers
- Capacity Range: 80-400 tons; 600-5,000 MBH
- Available with refrigerants R-513A and R-515B
- Enabled by Symbio® 800 unit controller
Ascend® Air-Cooled Chillers Model
- Capacity Range: 150 to 550 tons
- Refrigerant: Low-GWP R-513A
- Compressor Design: Helical rotary screw
- Energy Efficiency Rating (EER): IPLV: 19.7-21.6
- Enabled by Symbio® 800 unit controller
- Integrated Free-cooling option