1. TowerWise.ca Energy savings in Multi-suite residential buildings: Case Studies TEEAC Meeting November 3 rd, 2011

2. Outline New Construction Appleby Woods Combined Heat and Power Bloor Street

3. Appleby Woods Design Objectives: Reduce operating costs through good building design Conservation Renewable Energy Sources 101 condominium suites

4. Appleby Woods Building Envelope Insulated concrete forms Low window-to-wall ratio

5. Appleby Woods PV Generation Grid-tied, roof-mounted PV system Stand-alone LED parking lot lighting units

6. Appleby Woods Ground Source Heat Pump System 54 boreholes in the parking lot Hydronic loop Suite-based water-to-air heat pump and fan

7. Appleby Woods Other features Dual flush toilets Energy Star appliances Low-e argon-filled windows Motion-sensor parking garage lighting in stalls

8. Appleby Woods Costs Total Project Cost $22M Cost of GSHP System $1.8M Cost of Solar PV System $450K Cost of Solar Parking Lot LED Lighting $178K Unit purchase price lower than area average by 25% Monthly fee lower than area average by 60%

9. Bloor Street Pre-Retrofit Situation: 326 rental suites Built in 1980 Needed to replace emergency power system Pilot CHP system

10. Bloor Street Design and Installation 335kW electrical output 1.4MMBTU thermal output Housed in a 40ft container located on the roof Commissioned in July 2009

11. Bloor Street Energy Performance

12. Bloor Street Projected Financial Performance Scenario Est. Annual Program Revenue Simple Payback 15 year ROI IRR over 15 years Net Present Value in 2010 Energy Cost Savings Alone - 13 years 17%2%-$408,000 With DR3 Revenue $48,900 10 years 65%6%$24,000 With CHPSOP Revenue $116,000 7 years 130%11%$618,000 CHP System supplies about 40% of annual electrical demand while producing waste heat

13. Lessons Learned New Construction Low energy features for less Combined Heat and Power Detailed planning process http://www.stlucieco.gov/planning/planning.htm

14. For More Information Energy Retrofit Case Studies on the TowerWise Website http://towerwise.ca/case_studies