Could borehole thermal energy storage solve Canada's Winter woes?

An innovative technology known as Borehole Thermal Energy Storage (BTES) could be an effective solution to Canada’s winter woes. The technology behind BTES systems is elegantly simple. Initially designed for building heating and cooling, a BTES system captures solar heat during the summer months and stores it underground.

Can underground thermal energy storage be used in northern China?

A study assessing the potential for large-scale underground seasonal thermal energy storage in northern China, including their preeminent winter city Harbin, known for its massive ice buildings and sculptures festival, identified numerous suitable sites for STES implementation.

Is seasonal storage economically viable?

Seasonal storage typically requires considerable planning and co-ordination between end-use demands and energy resources, and it is economically viable only when costs are low, given that the storage systems charge or discharge so infrequently.

What is the difference between seasonal storage and district heating?

The electricity generation capacity of district heating systems is often determined based on the winter heat demand. Seasonal storage allows the system to operate with less generation capacity, lowering costs.

Why do we need a winter heat pump?

This can be especially valuable for meeting the expected increases in winter electricity demand amid the greater adoption of heat pumps in district heating networks, homes and other buildings. The electricity generation capacity of district heating systems is often determined based on the winter heat demand.

Can borehole storage help heat a city?

For instance, rigorous modeling for Helsinki—a city hardly known for mild winters—indicates that borehole storage, combined with solar collectors or renewable-driven heat pumps, could cover 90 percent or more of its heating needs under optimal conditions.