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

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Natural Resources Canada – Community Energy Systems - Case study: Cobourg, ON Habitat for Humanity of Northumberland renovated buildings that were formerly used for military housing. To-date, 10 of the 29 units are complete and occupied. • Reusing existing buildings saves energy for construction, makes efficient use of land and reduces sprawl. • The project served as an important first renewal; it has led to revitalization of surrounding areas; developers have brought forward plans to redevelop a neighbouring parcel of land. Source: CMHC. 2003. Assessment of the Direct and Indirect Impacts of the ACT Program. For additional information, contact (613) 241-5221 ext. 242 info@actprogram.com B.2.3 Efficiency lighting Homeowners that replace regular incandescent lights with energy efficient compact florescent lights save energy. The bulbs bearing the international high efficiency ENERGY STAR ® symbol on the packaging assure maximum energy efficiency. According to NRCan’s Office of Energy Efficiency, a typical Canadian home can have as many as 30 light fixtures, costing an average of $200 annually in electricity. Replacing regular incandescent bulbs with compact fluorescent lights in just five fixtures that are used three hours a day or more could reduce the yearly expense by $30. These savings are enough to pay off the added cost of the compact fluorescent lights bulb in less than two years. For more information on the ENERGY STAR international symbol or tips on energyefficient products, call Natural Resources Canada's Office of Energy Efficiency (OEE) toll-free at 1-800-387-2000 or visit OEE's websites at http://oee.nrcan.gc.ca or http://energystar.gc.ca, or write to Energy Publication, Office of Energy Efficiency, Natural Resources Canada, c/o S.J.D.S. Ottawa, Ontario K1A 1L3. For details on incentives and rebates for Selected ENERGY STAR ® Qualified Products In Canada, contact OEE. - Case study: Santa Monica, CA, USA The City of Santa Monica retrofitted all its six downtown garages, the city hall, and the police department with energy efficient lighting. Lighting retrofits may be the most costeffective method of saving energy and have the fastest rate of return on investment. • The downtown parking garages were retrofitted at a cost of $198,750 (US); it will save the City over $60,000 (US) per year, and reduce electricity consumption by over 558,775 kilowatt-hours per year. • Lighting retrofits at the city hall and the police department were completed at a cost of $39,975 (US); it will save over $14,000 (US) per year, and reduce electricity consumption by over 130,500 kilowatt hours per year. Draft 4/11/2005 86
Natural Resources Canada – Community Energy Systems The City has retrofitted 55 per cent of its square meter area with energy efficient lighting and has committed to retrofitting 90 per cent, if it is cost effective. The project operates with assistance from the federal environmental protection agency as well from the local energy provider. Source: http://www.ci.santa-monica.ca.us/environment/policy/energy/ B.2.4 Shade trees Trees reduce cooling energy use in buildings by shading them and cooling the air. B.2.5 Rooftop gardens Traditionally two styles or types of green roofs are distinguished: intensive or traditional roof gardens, and extensive or ecological rooftops. The former, typically referred to as roof gardens, includes structures that can accommodate deep soils, trees, and shrubs, and deeper-rooted vegetation. Resources: http://www.cardinalgroup.ca/grhcc/main.htm http://www.greenroofs.com/ http://www.cmhc-schl.gc.ca/publications/en/rh-pr/tech/01-101_e.pdf - Case study: Ottawa, ON The National Research Council built a demonstration project on its Ottawa campus to study green roofs and vertical gardens. The Field Roofing Facility was designed to compare different roofing systems. It measured temperature profile, heat flow, solar reflectance, rooftop microclimate, soil moisture content, and storm water runoff. • Green roofs reduce energy used for air conditioning by 23 to 30 per cent (The savings being at the high end in Vancouver.) Evaporative cooling saves additional energy. • Green roofs reduce energy used for heating in the winter due to the increased insulation. Heating accounts for the largest share of energy consumption in residential and commercial buildings. Draft 4/11/2005 87
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