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Thermal-storage systems

Store heat and cooling for later use, and save with off-peak rates.

What are thermal-storage systems?

One way to save money is to heat and cool primarily during off-peak times, when rates are traditionally cheaper. Thermal-storage systems allow you to store heat or cooling for use during traditional hours.

Types of thermal-storage systems

There are several technology designs to serve heating and cooling systems.

  • Underfloor heat storage — using either cables or in-floor hydronic heat — creates a heat reservoir within a layer of sand under the surface.
  • Central thermal-storage furnaces use specialized ceramic bricks to store heat — and for smaller spaces are available thermal-storage room units.
  • Thermal-storage cooling (generally used for commercial buildings) generate ice or cooled water that’s then used to cool during peak periods.

Most systems can be installed in either homes or businesses and can provide heating or cooling for a whole building, a single floor, or a specific area.

Rebates are available

Install a thermal storage system on a qualified discounted off-peak rates and receive a rebate. See details in our electric heating rebate page.

Learn more about thermal-storage systems

There are several different types of thermal-storage systems, depending on your needs and applications. Dive deeper into thermal-storage systems on the following pages.

Related programs

Residential Business

Deferred Load Rate

Store now, use later—save up to 30% on your heating and cooling costs by switching to our Deferred Load Rate.

Dual Fuel Rate

Gain the benefits of both electric heat and backup non-electric heat through use of our Dual Fuel Rates.

Electric heating rebates

Rebates are available for several electric-heating technologies.

Fixed Time of Delivery Rate

Set your energy delivery to off-peak hours to store heating and cooling power for the day—all at one of our lowest prices.

Heat pump rebates

Install the most efficient and environmentally friendly heating and cooling system on the market and start saving big!

Thermal-storage systems

Add a thermal-storage system to a new building or upgrade an existing system and get up to $75 per kilowatt in rebates.