A Public Housing Perspective On Implementing Renewable Energy Projects

1. A Public Housing Perspective On Implementing Renewable Energy Projects Philip Jeung, Director Smart Buildings & Energy Management • Toronto Community Housing Corporation (TCHC) • Largest residential landlord in Canada • 160,000 residents, 6% of Toronto’s population • 57,500 units in Toronto

2. Corporate Green Plan • Green Plan – 40% reduction in greenhouse gas emissions by 2020 relative to a 2003 baseline • Renewable Energy Study and Implementation Plan (REP) – feasibility of a 5, 10, 15 per cent carbon reduction by 2020 through renewable energy technologies

3. Criteria for the Deployment of Renewable Energy Technologies • Ownership structure of renewable energy facilities provides greatest benefit to TCHC • Project Partners – provides synergy to optimize Housing’s mandate and community plan objectives • Incentive Program that is a good fit to business plan

4. Applicable Renewable Energy Technologies • Solar thermal • Solar air heating • Solar photovoltaic • Wind energy • Geothermal energy

5. Solar Thermal • Uses energy of the sun to preheat domestic hot water • Active systems – actively pump fluid around system • Passive systems – natural convection to circulate fluid • Opportunities • 40% solar fraction used • Compatible with existing building, new builds, retrofit • Large and relatively constant domestic hot water load • Process • Identify number of buildings • Identify representative buildings • Analyze roof condition

6. Solar Thermal ( Hot Water ) Project 201 Logan : 2- flat panel system

7. Solar Thermal – Case Study • City Solar Neighborhood program – 4 houses • Medium Size : six-plex in Logan • Large Size: Coatsworth • Challenges: • Toronto Building: review process and standards • Mechanical issues • Structural issues • CSA certified installer • Audit cost • Delay in permitting • Lack of real data to check assumptions in payback

8. Solar Thermal Project Example 81 Jones – evacuated tubes system

9. Solar Thermal – Case Study • Major risks : • Availability of incentives past the current limits • Capacity to manage plan and verify savings • Project Cost overrun and delays • Continuous performance and energy monitoring

10. Solar Thermal – 33 Coatsworth • Incentives • Long lead time for approval of contribution agreements • signed contract with NRCan on June 2, 2009 • Took 4 month for approval • Design • Install energy meter to measure load demand • Storage tank, system designed to reach 40% of DHW • Selection • Products and installers based on price and performance • Two types of solar hot water collectors • - Evacuated tube: heat transfer surface inside glass tube • - Flat plate collectors: heat transfer surface inside a flat • plate at atmospheric pressure

11. Solar Thermal Project : 33 Coatsworth

12. Solar Thermal – 33 Coatsworth • Project Highlights : • Over 100 solar panels installed • Relatively short payback • Acceptance from NRCAN • Proven product installed • Reference check • Ongoing performance measurement • Adopt Community Employment Development Policy

13. Solar Air Heating • Uses energy of the sun to preheat ventilation air • Mounting dark metal cladding over a south-facing wall • Heated air is drawn into HVAC system on the roof

14. Solar Air Heating – 40 Teesdale • Two solar wall heater, 319 m2 • Installed on upper 12 stories of masonry wall • Projected saving $8500/year, 53 tonnes of CO2/year • Solution Highlights: • Metal panels heat up in the daytime • Ventilation fans draw the warmed air on the surface of the wall through the perforations in the panels and into the air cavity • System is tied into existing roof mounted air make-up units • Heated ventilation air throughout the corridors and common areas

15. Solar Air Heating – 40 Teesdale • Challenges: • Little maintenance after installation • Re-commissioning, refurbished through SolarWall installer (Conserval) • Carry controls sub-contractor to install the control and monitoring components • Savings • Projected Saving 344.9 GJ/year based on 9 month heating season for 8250 cfm with operation schedule of 24 hr/day • 1694 l/s = 3595 cfm or 7,200 cfm • Actual saving totalling $1,500 from Sept 24 to Nov 10, 2009

16. Solar Air Heating – 40 Teesdale • Lessons learned • All new projects need continuous performance monitoring and maintenance • Post-retrofit savings verification • Through monitoring reduce maintenance cost

17. Solar Photovoltaic • PV installations under OPA Feed-In-Tariff contract • Pilot project to install 140 kW solar PV panels in 14 rooftops

18. Solar Photovoltaic • Business Model: • Owner purchased and installed • JV Partnership • Roof Leasing

19. Solar Photovoltaic • Challenges: • Intensive upfront capital investment • Application and administration logistics • Capacity to deliver • Scalability and Sustainability • Continuous performance monitoring and enhancement • Rapid technology changes

20. Solar Photovoltaic • Identification of risks and mitigation measures • Availability of incentives past the current limits • Internal capacity to manage plan and verify savings • Mitigation by: • Seek early approval and support from Board and senior executive • Set up focused team to manage and deliver plan • Build in flexibility and ease of installation and maintenance at design stage

21. Solar PV Business Case ( simplified)

22. Wind Study Annual energy yield per square meter rotor area for all 11 TCHC buildings.

23. Wind Speed Analysis at 75 Dowling

24. Conclusion • Critical Success Factors: • Understand the opportunities in the context of Portfolio • Sound business plan and implementation strategy • Well balanced mix of renewable technologies • Role of incentives, grants, rebate programs • Measurement and Verification • Capacity building and deployment • Communication and education

25. Renewable Energy Seminar Thank You Philip Jeung Toronto Community Housing Smart Buildings and Energy Management 416 – 981-4373 philip.jeung@torontohousing.ca www.torontohousing.ca