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“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.

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

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

State Water Heater

  • $475 to purchase
  • $ Free with gas to electric exchange (requires load control form)
  • 95% Efficient
  • 6-year warranty

Rheem Marathon Water Heater

  • Lifetime tank warranty
  • 95% Efficient
  • 40 – 100 gallon sizes

Contact SIEA Energy Services Today