Energy Savings6 min readJune 20, 2026

How Renewal Thermal Energy Cuts Heating Bills by 67%

Discover the science behind GeoMass thermal storage and how homeowners across Canada are dramatically reducing their energy costs.

Gabriel Tremblay

GeoMass Team

Renewal Thermal Energy (RTE) works by storing thermal energy underground during off-peak hours and releasing it when needed. This approach leverages the stable temperature of the earth to buffer your home against extreme weather, reducing the load on your HVAC system year-round.

The Science

Underground thermal mass acts as a giant battery for heat. During summer nights when electricity is cheap, the system charges the ground with coolness. During winter, stored warmth from the previous season is released gradually.

Real Results

Homeowners in Quebec and Ontario have reported heating bill reductions of 55–67% in the first full year after installation. The payback period averages 7–9 years depending on home size and local energy prices.

Getting Started

The first step is a thermal assessment of your property. Contact GeoMass to schedule a consultation.