Combined Heat and Power (CHP): Cogeneration for housing and other buildings

1. Combined Heat and Power (CHP): Cogeneration for housing and other buildings HUD “GOING GREEN Conference: Intelligent Investments for Public Housing” Boston, July 13-14 2011 Bob Groberg, Co-Chair HUD Energy Task Force (Retired) John daSilva, Sales Manager, Aegis Energy Services

2. What is combined heat and power (CHP)” or “cogeneration”? • A way to produce electricity in • your own building • A way to use heat usually wasted when electricity is generated.

4. CHP Equipment for Multifamily BuildingsReciprocating Engines, Microturbines

5. CHP FOR SMALLER BUILDINGS • EPA has an “Emerging Technology” Initiative • 2011 ENERGY STAR Award recognized two “micro CHP” systems: • ECR International “freewatt” MCHP System • Marathon “ecopower MCHP System

6. Why Consider CHP? • Lower operating cost: reduced electricity and/or fuel bills • Avoid some cost of electric service • Offset cost of HVAC system upgrades • Increase reliability/avoid power outages • Reduce emissions – satisfy new restrictions, generate salable credits • Public relations – enhance “green” image

7. Housing Finance Agencies Can Support CHP Massachusetts HFA: • Financed adding CHP to many older developments • Reduced energy costs maintain affordability • Used reserves, refinancing, rebates, typical three-year payback for some • Supports CHP for new construction • Stresses the importance of the company installing and maintaining the system. • In Mass. utilities provide financial support.

8. CHP in Cambridge MA-808 Memorial • 300 units built in 1975 • Put 75 kW cogen system in boiler room in 2004 • Provides 42% electricity, • 33% heating and DHW • $175,000 MassHousing loan • Payback est. 3.4 years

9. HUD’S CHP INITIATIVE • HUD Energy Task Force Action Plan: Encouraged CHP for public and assisted multifamily housing • Worked with EPA/DOE CHP Partnership and Oak Ridge National Laboratory • DOE Regional Clean Energy Centers provided information and technical assistance

10. HUD Guides for CHP in Multifamily Buildings • #1 Q & A on Combined Heat and Power for Multifamily Housing • #2 Level 1 Feasibility Screening for Combined Heat and Power for Multifamily Housing • #3 Introduction to Level 2 Analysis Tool for Multifamily Buildings

11. Combined Heat and Powerin Danbury - CT, Wooster Manor • 100 units PH built 1970’s • 60kW system installed 1998 • Provides 66% electricity, 50% space and all domestic hot water. • Energy cost reduced by $40,000 annually • $275,000 gas company loan

12. First steps . . . • For a quick preliminary view of potential: EPA has 11 Questions for you to consider. • Then for a simple calculation of the payback potential for a building try HUD’s CHP Feasibility Screening Software, prepared by Oak Ridge National Lab. • For sources of technical assistance, contactDOE Regional Clean Energy Application Centers (RACs) or EPA’s CHP Partnership.

13. Is My Facility a Good Candidate forCHP?

14. Data needed for preliminary CHP Feasibility Screening • Utility consumption (energy and demand) • Utility rates • Building area for heating and cooling • Number of occupants • Intermediate information

15. Monthly Utility Data

16. CHP Feasibility Guide “Results” Screens-Comparison of Methods

17. Results: Method 2- Hot Water, Space Heating and Cooling

18. Energy Plots

19. What “Results” Mean. • Indicates whether a more detailed analysis would be worthwhile doing • Encouraging results are a prelude to a more rigorous analysis by engineering professionals

20. CHP in HUD Programs • Mark-to-Market Green • Public Housing • HOME Investment Partnership Program • Multifamily Housing Management

21. Sources of Information aboutcombined heat and power • HUD CHP information- CHP Guides and links to ORNL software: www.hud.gov/offices/cpd/library/energy/ index.cfm • DOE CHP Initiative: http://www1.eere.energy.gov/industry/ distributedenergy/chp_basics.html • EPA CHP Partnership: www.epa.gov/chp • US Clean Heat and Power Association: www.uschpa.org