Energy and Sustainability in Chapel Hill

Transcription

1 Energy and Sustainability in Chapel Hill Background for Energy Strategy RFP John Richardson Chapel Hill Sustainability Officer

2 A Sustainability Community The Town s approach to sustainability includes the perspective that social, economic and environmental progress is of equal importance, and that the community s efforts to meet the needs of the present day should not lessen the ability of future generations to meet their own needs in these same focus areas.

3 OPERATIONAL & COMMUNITY ENTITIES Office of Sustainability Sustainability-related Committees Sustainable Operations & Services Team Mayor s Youth for a Sustainable Future

4 Office of Sustainability Established Sept. 2nd; positioned within Manager s Office; advancing vision Coordinates with senior mgt. and other staff to address sustainability within Town operations Officer a liaison to community and those outside of Chapel Hill on sustainabilityrelated issues

5 Sustainability by Committee Sustainability Committee (citizen advisory board, 11 members, advocates for each leg of the stool) Sustainability Energy and Environment Council Committee (Council Committee, 4 members) Sustainable Operations and Services Team (Town Staff Committee, 23 members)

6 Mayor s s Youth for a Sustainable Future Mayor s Youth for a Sustainable Future Youth Council: 9-12 grade, Parks & Rec. Concept: Skills to Service for Sustainability Partnerships with local organizations, businesses, etc. Fall: Water Conservation Audit 30% savings

7 PROGRAMS & PROJECTS Sierra Club Cool City Carbon Reduction Program Countywide GHG Emissions Inventory Fare-Free Transit Town Operations Center Energy Audits Energy Bank Solar Bus Stop Demonstration Project LED Street Lighting Pilot

8 Sierra Club Cool City Cool Cities Guide Step 1 Pledge USCMCC (May 9, 2005) Carbon Reduction Pledge (Sept 06) Step 2 GHG Inventory (Feb 09) Step 3 Developing Solutions Plan Step 4 Implement & Monitor Progress

9 Carbon Reduction Program (CRed( CRed) UNC students at Cambridge University bring pledge model home to U.S. 1 st U.S. Municipality to pledge 60% by 2050 as part of the Carbon Reduction Program; UNC made companion pledge 5% by 2010 for Town Operations

10 County GHG Emissions Inventory & Forecast Chapel Hill ICLEI Member since 2001 Joined Cities for Climate Protection to undertake GHG Emissions project 5 milestone framework Report released in February

11 Project History 2001: Chapel Hill joins ICLEI 2003: Chapel Hill, Carrboro and Orange County commit to take part in ICLEI s Cities/Counties for Climate Protection Program (CCP). 2005: MOA signed by all jurisdictions to develop countywide GHG Emission Inventory and Reduction Plan (consultant IES) 2009: ICLEI finalizes report

12 Fare Free Transit Partnership between UNC-CH-Carrboro 2 nd highest ridership in state Ridership up 100% since fare-free policy was instituted (6.6M+ annually)

13 Town Operations Center Sustainable/Energy Saving Systems Overview Solar Thermal (for water heating) Photovoltaic Panels (supplement load) Daylighting Ground source heat pumps

14 Solar Thermal At A Glance The Solar Thermal system is utilized to pre-heat water for the domestic hot water system. The system has a glycol loop which circulates glycol to the roof mounted flat panels and then through a heat exchanger on a storage tank.

15 Solar Thermal The pre-heated water from the storage tank needs little additional firing to achieve the desired temperature for building use (primarily hand washing and showering).

16 Photovoltaic System At A Glance The system consists of 36 panels each capable of producing 124 watts at peak for a total of 4,464 watts. The generated power goes through a Sunny Boy inverter to create AC power for our building. Power goes directly into electrical system of Building 2 at Public Works offsetting use PEMC supplied power.

17 Photovoltaic System To date the PV system has generated over 7,100 kw Hours of energy for the building. This also reduces our demand by about 1.5kW on average throughout the day.

18 Daylighting At A Glance The maintenance work spaces (bays) and crew areas are day lit. This system includes light sensors in the spaces, motion detectors and dimming control switches.

19 Daylighting

20 Daylighting

21 Ground Source Heat Pumps At A Glance Instead of an air-to-air heat exchanger outside the building, these have a shared source of ground water for heat exchange. They are operated via a direct digital control (DDC) interface.

22 Ground Source Heat Pumps At A Glance Total of 42 heat pumps between Transit and PW (29 in PW buildings/13 at Transit) There are 82 wells for the groundwater loops (50 on PW/32 on Transit) Wells are to a depth of 300 The water loops are re-circulating (closed)

23 Ground Source Heat Pumps

24 Energy Audits Grant awarded through SEO, Sustainable Community Project program Audits of Town Hall and Fire Station #1 Example: FS#1 Improvements EE windows and doors (low-e) HVAC units upgraded Solar hot water heating system 3.78 kwh solar collection system

25 Energy Bank Revolving fund financing energy efficiency and renewable energy projects at Town facilities 2003 Bond Referendum; $500,000 Acquisition of new lighting, heating, A/C fixtures and related machinery & equip. Concept: Value of energy savings roll back into bank for future project investments

26 Energy Bank Replaced nearly 20- year old HVAC system at Town Hall Used Energy Bank to help pay for the digital energy management control system Savings paid back over a 7-year period

27 Solar Bus Stop Roof-mounted solar array power LED lights Lights on a dusk; stay on for 9 hours Battery capacity enough for 5 days without direct sunlight

28 LED Street Light Pilot Before 400W HPS After 260W LED

29 POLICY Green Fleets LEED-Based Energy Ordinance Expedited Review for LEED Certification Energy Planning in Rezonings

30 Green Fleets Policy Adopted 2005 Energy efficiency and emissions reduction Fleet contains 60% alternatively fueled vehicles

31 LEED-Based Energy Ordinance LEED-Silver (min.) for all new Town buildings or expansions over 5,000 s.f. Most current version of LEED-NC or related rating system Example: Library Expansion project

32 Expedited Review for LEED Certification Priority status for review; priority status for scheduling on review agendas for Town Boards and Council Initial and continued LEED documentation is required to maintain expedited review status

33 Energy Planning in Rezonings Council s expectation that RZs with SUPs will be 20% more energy efficient than ASHRAE or most current std. Projects to include an Energy Management Plan Considerations: sustainable energy production or offset purchase (solar, wind, hydro, biofuels)

34 Water Conservation Water processing is energy intensive Year-round water conservation practices OWASA: Interlocal Water Conservation Strategies Stormwater Division: Outreach and Education