Volume 3 - Program & Project Ideas (PDF - 4.5 - Natural Life Network

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<strong>Natural</strong> Resources Canada – Community Energy Systems A.9.1 Solar heating (See healthy housing and passive solar design guidelines) Solar heating is using the sun's energy to heat our homes and water. There are many solar heated houses in Canada. These homes often use passive solar designs that operate without pumps, fans, or other mechanical equipment to store and distribute the sun's energy. In contrast, active solar designs need additional mechanical components. - Case study: Okotoks, AB A subdivision development is being planned in the Town of Okotoks, where each of the 74 houses will have solar collectors on the garages and bore-hole storage (ground storage) of heat capabilities, allowing heat stored during summer to be used in the heating months via a district energy system. The houses will be built to R-2000 standards. Garages are accessed through back lanes. • The project will save 1,300 Megawatt hours per year and will reduce greenhouse gas emissions from 370 tonnes per year per year. For additional information, contact Doug McClenahan, 580 Booth 13 th floor Ottawa, Ontario, K1A 0E6 Tel.: (613) 996 6078, E-mail: dmcclena@nrcan.gc.ca web http://www.town.okotoks.ab.ca/ A.9.2 Solar water heating The sun also can heat water for bathing and laundry. Most solar water-heating systems have two main parts: the solar collector and the storage tank. The collector heats the water; then, it flows to the storage tank. The storage tank can be just a modified water heater, but ideally it is a larger, well-insulated tank. The water stays in the storage tank until it is needed for something, such as a shower or to run the dishwasher. - Case study: Lillooet, BC Solar energy is used to heat Lillooet’s municipal swimming pool. • Solar energy is greenhouse gas emission free. • Payback times will vary, but will generally lie between five and ten years. Source: City of Lillooet. Undated. Lillooet Solar Municipal Pool. Community Energy Association Committee case study http://www.energyaware.bc.ca/tk_c_lillooet1.htm Draft 4/11/2005 126
<strong>Natural</strong> Resources Canada – Community Energy Systems Source: NREL. For solar hot water systems flat-plate solar collectors like this are usually used. - Case study: Okotoks, AB Okotoks is a rural town with a population of 12,000 in the metropolitan area of Calgary. The municipality, working with the University of Calgary and a local real estate developer, wrote an award winning municipal development plan (MDP) for growth management and sustainable development. The plan sets out a long-range commitment to live within the carrying capacity of the surrounding environment and preserving the small town atmosphere using innovative planning and land use strategies. This includes limiting water use; expansion of the urban boundary; and pursuing eco-efficiency through urban design and recycling. The MDP plan focuses on: land-use and urban design; mixed residential housing; transportation systems; open space/urban forest; regional partnerships and planning; planning for a socially responsible community and long term affordability. CMHC. 2002. Sustainable Community Design Demonstration in Okotoks, Alberta: Testing Consumer Receptivity http://www.cmhc-schl.gc.ca/publications/en/rh-pr/index.html. For more information, contact municipalmanager@town.okotoks.ab.ca web site: http://www.town.okotoks.ab.ca/ Draft 4/11/2005 127
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