What is thermal energy storage?
Thermal Energy Storage (TES) is an advanced energy technology that serves as a large-scale substitute for traditional energy sources. TES accommodates a wide range of needs and applies to space and water heating, cooling, and air conditioning. Thermal energy is collected and held for later use, making it a key technology for energy conservation — lowering the cost of energy and enabling efficient use of natural sources.

PRT’s TES capabilities
Paso Robles Tank provides Thermal Energy Storage tanks in many different sizes for both cooling and heating applications. Every project is delivered in-house and by a single contractor, including:
- Engineering and design
- Fabrication
- Foundation installation
- Tank erection
- Internal diffuser systems
- Shop and field coatings
- Exterior insulation
Our turnkey operation gives you, the owner, sole-source responsibility and peace of mind — and as an added benefit, PRT provides professional liability insurance on all of our projects.
Stratified water thermal energy storage
Stratified water TES separates warmer and cooler water within a single tank, drawing from each layer through engineered inlet/outlet piping and diffusers. Key components include:
- Diffusers — distribute flow to maintain thermal stratification
- Inlet/outlet pipes — engineered for low-turbulence charge and discharge
- Molten salt storage — for high-temperature thermal applications
Where TES makes sense
PRT’s TES tanks can be designed to meet the thermal storage needs of:
- Universities
- Hospitals and medical facilities
- Data warehouses
- Military facilities and government buildings
- Solar grids and energy company supply
- Other commercial facilities
Industries suited for PRT TES
Thermal energy storage; cryogenic, ethanol & biofuels; oil & gas; power; food & beverage; terminals; water & wastewater; drilling; chemical; refining & petrochemical; pulp & paper; transportation; asphalt; mining & minerals; oil sands; and dry bulk storage.
Proven, award-winning delivery
PRT strives to lead every industry we serve and let our quality of work speak for itself — exemplified by ten consecutive years as an STI/SPFA Product of the Year award winner. Safety + Quality = Production.

