Clean and Renewable

Electric Thermal Storage Units

Heat your home economically with a clean and renewable ETS unit while taking advantage of our off-peak rate.

What it is

“ETS” is a heating technology designed to store electric heat during the OFF-PEAK hours of the day when electricity costs are cheaper, saving you money.

A super-insulated storage cavity containing ceramic bricks is charged (heated) to approximately 1,400°F and is stored for use during the ON-PEAK hours of the day when electricity costs are higher.

A fan forces air over the heated bricks sending the warm air into the room throughout the day; keeping your room at a comfortable temperature and using a minimal amount of electricity. AND the ETS unit surface temperature will not harm or burn when touched and is safe for children to be near.


ON-PEAK RATE: $0.149 per KwH
OFF-PEAK RATE: $0.076 per KwH (first 1,000 KwH)
Power GREATER than 1,000 KwH: $0.062 per KwH

SUMMER: (MAY – AUGUST) 11:00 p.m. – 7:00 a.m.
WINTER: (SEPTEMBER – APRIL) 11:00 p.m. – 7:00 a.m. & 10:00 a.m. – 4:00 p.m.
$30 Access Charge Per Month

For more information about Steffes ETS technology go to www.steffes.com or call San Isabel Electric’s Energy Services Department at 719-647-6242.