Off-Peak Heating For the Homeowner

Off-Peak Heating

A definitive guide on getting started with ETS.

Choosing the right ETS heating system
Choosing The Right System

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Off-Peak Heating For the Professional


Commercial ETS UnitsLarger Capacity Systems & Solutions For Heavy-Duty Applications


Info for utility companies Resources & Info on Power Management, Balancing and Control

Off-Peak Heating with Electric Thermal Storage (ETS)

Electric Thermal Storage (ETS) is the technology of converting off-peak electricity to heat and storing this low cost heat for use in satisfying comfort requirements of a home or business 24 hours a day.

An ETS system contains electric heating elements which lie within special, high-density ceramic bricks. These bricks are capable of storing vast amounts of heat for extended periods of time.

Power is cheaper when demand is low

Electricity is more expensive during certain times of the day when we use a lot of it due to operating dishwashers, washers and dryers, computers, blow dryers, heating and cooling systems… it’s a long list. A power company may refer to the hours when the demand for electricity and associated costs are high as on-peak hours. In the commercial and industrial market, on-peak times are when their electric consumption is at its highest point, usually during daytime hours.

Off-peak hours are the times of day or night when the power companies have excess energy supply due to low demand. In commercial and industrial applications, it is those hours when "demand free" power is available and generally when consumption within the facility is low. Some power companies offer reduced rates or substantial discounts on electricity consumed during off-peak times. These rates are called “off-peak rates.”

During hours a power company deems as off-peak, the electric elements generate the heat that will be stored in the bricks of the ETS Heating Systems. This stored heat is used to satisfy immediate heating requirements and to provide total comfort during peak hours.

Environmentally Friendly

Today, there is great interest for energy efficiency, conservation, and preservation of our environment. Steffes ETS Heating Systems make the most efficient use of power generation, transmission and distribution. These innovative heating products allow for full utilization of power from renewable energy sources such as wind and solar. Steffes ETS heating systems are your green heating solution that brings benefit to consumers, power companies and our environment.

How ETS is a Green Heating Solution

Manufacturing Marvels® Features Steffes Video:

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Information For Power Companies

Steffes has a long history of working with power companies in developing off-peak rates and strategies that lower overall power costs, reduce peak demand, and benefit all parties involved.

Learn More about Off-Peak for Power Companies