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Hot-water heating cheaper than DES

LETTER: For the week of Jan. 9

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In a 2012 white paper, The Regulation of District Energy Systems (DES) by The Pacific Institute for Climate Solutions, University of Victoria that reviewed both private and public district energy systems including Whistler's DES system, Resort Municipality of Whistler (RMOW) staff estimated that the cost of energy for heat-pump systems (hydro plus DES fees) would be about 84 per cent of the energy costs for electric baseboard hot-water heating (hydro only).

What was not mentioned was the associated capital costs of installing heat-pump systems compared to the capital costs of installing electric baseboard hot-water heating systems.

The cost of parts and labour to install electric baseboard hot water heating would be approximately $5,000 compared to the cost of parts and labour, estimated at $35,000, to install a heat-pump system: $30,000 more for the heat-pump system.

The capital cost of the 100-square-foot mechanical room for the heat-pump system in my townhouse at $300 per sq.ft. is approximately $30,000. Water heaters for electric baseboard hot-water heating systems can usually be installed in four square feet of closet space. At $30,000 per sq.ft. the capital cost would be approximately $1,200 for electric baseboard hot water heating; $28,800 more for the heat-pump system.

In terms of operating costs, hydro averaged $126/month in my last annual billing cycle of which 50 per cent was for space and water heating; $63. DES fees added $48/month for an average monthly total cost of energy of about $110. Based on RMOW staff estimates, installing electric baseboard water heating would result in a $21/month increase in the cost of energy (hydro) for a total of $131/month compared to $110/month cost of energy (hydro plus DES fees) for the heat pump system: $21 less in the cost of energy for the heat pump system.

The cost of maintenance deemed "critical" for the heat pump system averages $50/month compared to zero dollars for electric baseboard hot-water heating: $50/month more for the heat pump system.

The 10-year replacement cost for the two water heaters for the heat-pump system is estimated at $7,500 compared to an estimated 10-year replacement cost of $1,500 for the water heater for the electric baseboard hot-water heating system: $62.50/month compared to $12.50/month and $50/month more for the heat pump system.

The above operating costs do not include the cost of repairs and replacement of system components such as the heat pump. The cost of repairs and replacement of components for the electric baseboard hot-water heating system is minimal.

When capital and operating costs are analyzed, electric baseboard hot water heating is $58,800 less to install and $79/month less to operate than the heat-pump system.

In terms of [being] green, the DES white paper concluded, "to justify the development of DE systems solely on the basis of narrowly focused 'lower carbon emissions' is insufficient, particularly in BC with its low carbon electricity."

Whistler's zeal to be green at any cost appears to have pre-empted a process of due diligence that would have included, at the very least, a financial cost/benefit analysis. 

The District Energy white paper states that systems regulated by political bodies do not offer the same level of customer protection, particularly when the regulator is also the system owner and has mandated a monopoly, or where the political body may not be adequately fulfilling its fiduciary responsibilities. (Unlike a water or sewer customer where almost all users are voting taxpayers, the small customer base of a municipal system wields minimal influence.)

Ultimately, Whistler's zeal to be green has manifested in affordable housing with a heating system that is unaffordable to operate and maintain thus placing an onerous financial burden on the very Whistler residents Whistler Housing Authority housing is supposed to help.

David MacPhail // Whistler

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