Page 9 - U4SSC Case study: Energy efficiency in buildings, June 2020

Figure 1: DLWC Process (Source: Toronto Hydro)

The Next Evolution for DLWC

Three major initiatives are being planned that have the potential to expand the benefits of DLWC and
capture additional value for Toronto:

• To install a fourth intake to expand renewable cooling capacity for DLWC.

• To add large-scale thermal storage tanks to increase renewable cooling utilization.
• To develop a district heat recovery system that uses rejected heat from buildings connected to
DLWC to heat other buildings.

Fourth Intake

Installing a fourth intake into Lake Ontario has the potential to increase the capacity of DLWC
significantly, while providing improvements to the city infrastructure such as control upgrades at the
city’s water filtration plant. To make this project a reality, a strong leadership commitment, a close
working relationship between Enwave and Toronto Water, and a fiscally-responsible approach will be
required. The city and Enwave will need to revise existing agreements to govern the use and upgrade
of the existing, abandoned pipe infrastructure and the necessary rights of way to complete the project.
Enough growth in demand must be secured to support investing in this new infrastructure.

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