Conservation impact of submetering in multi-residential buildings demonstrated in Ontario


Tom Cooper, VP
Sales & Marketing,
EnerCare Connections
Toronto, ON, Canada — (METERING.COM) — April 19, 2012 – The conservation and environmental impact of submetering multi-residential apartment and condominium buildings in Ontario is much larger than previously thought, according to a new report from Navigant Consulting Ltd.

For non-electrically heated units, the average electricity use was reduced by 34 percent (corresponding to 112 kW), while for electrically-heated units the average reduction was by 27 percent (corresponding to 106 kW).

Based on these figures the report estimates that if submetering were deployed in all currently bulk metered multi-residential buildings, the annual potential electricity savings following complete deployment could be 3.3 TWh over five years – more than all of the electricity produced from Ontario’s wind power facilities in 2010 – with a summer peak reduction potential of 383 MW.

Over a twenty-year period, the potential cost savings (in terms of investments for new generation assets, as well as transmission and distribution system upgrades) could be CA$2.73 billion (US$2.75 billion). The reduction in greenhouse gases over the same period could be 22,000 kt – approximately the same amount that was emitted by all private vehicles in Ontario in 2007.

“Navigant’s findings relating to conservation potential and avoided costs are a clear indication that submetering promotes energy conservation by encouraging reduced consumption,” commented Tom Cooper, EnerCare Connections’ vice president, Sales & Marketing. “Submetering is a win-win for building owners, condominium corporations and residents.”

The report (Evaluation of the Impact of Sub-Metering on Multi-Residential Electricity Consumption and the Potential Economic and Environmental Impact on Ontario) was prepared by Navigant for the Ontario submetering service provider, EnerCare Connections Inc.

It was based on consumption data provided by EnerCare Connections for 3,971 units in 22 buildings in Ontario covering the period from September 2009 through September 2011. Data from 672 of these units (i.e. those units that switched from bulk to submetering during the twenty-five month period) was used to estimate the conservation impact of submetering.

The report notes that to date, energy conservation impacts from submetering have not been counted by the Ontario Power Authority or local distribution companies toward conservation targets. Integrating submetering into conservation program delivery would contribute to Ontario’s conservation targets and could potentially deliver considerable benefits to the province.