Davis Future Renewable Energy and Efficiency(DavisFREE)

Status Report to Davis Natural Resources Commission 1/26/15

Background

• CEC competitive research grant award to address the building-related energy components of the City of Davis “Climate Action and Adaptation Plan”

• GHG reduction targets for 2015, 2020, and beyond. City-wide carbon neutrality by 2050.

• 5 primary research components• Future implementation to be provided by existing

“community engagement” teams.

Status Summary• All major Research Activities completed.• Final Report assembly and integration under way• Close-out plan and schedule developed • 3 supplemental assignments under way

– Plan and budget for a pilot ZNE Retrofit Program for Davis– Estimate the market adoption potential for privately-owned

rooftop PV systems– Solar water heating marketing materials (.ppt)

• Community Engagement tasks under way• Project ends March 31, 2015• Will meet or exceed contract task deliverables• Will complete on-time, under budget

Components (1)

1. Energy Data Development and Integration– Integration of community-wide energy data from

PG&E “Green Communities” interactive database and City of Davis GIS system.

– Aggregated customer energy data (~20-30 homes)– “Beta” test team for Green Comms – advised on

data needs and tools improvements needed by municipalities to develop local energy and environmental programs

– Extraction of energy-related data from City databases; approach will be very beneficial

– Developed analytical databases and GIS maps from City data

Components (2)

2. Locally-available Renewable Energy Resource potential analysis (UCD and KEMA)

– Community-scale systems (“solar gardens”) that can feed into distribution grid

– PV on municipal properties, parking lots– Larger system (1MW+) options analyzed

• PV, biomass, wind, geothermal, micro hydro• RE resources and applicable generation

technologies; PV most viable• Supply curves, cost-of-generation studies

Components (3)

3. Zero Net Energy Guidelines for Existing Residential Buildings (BIRAenergy)

– Davis is a stable, low-growth community bound by agricultural lands

– Cannot achieve GHG goals without major participation in this sector

– Innovative research application using Davis GIS data– ZNE Guide will exceed contract reqts.

• 3 complete chapters• 8 detailed draft chapters• 2 more chapters may be derived from other BIRA reports

Components (4)

4. Solar Thermal Deployment Plan (Aztec Solar)

– Reduction of direct combustion of natural gas (GHG)– Addressed barriers to SWH adoption– “Fast-track” plan for domestic water heating,

swimming pools– Existing solar thermal and PV installations accurately

located for each premise in Davis– New IOU incentive program pending for 2015 – will be

included in final report

Components (5)

5. Community Engagement– Collaboration with Cool Davis, YEW, PG&E, YCH,

PACE, LGC, etc. – Stakeholder presentations, webinars, construction

contractor seminars, revised website, and other activities under way – Jan 15 through Mar 15

– DavisFREE has been integrated with market delivery plans for the Georgetown University Energy Prize

– Implementation to be performed by existing energy program implementers

Components (4)

5. Community Engagement (VCAC, subs)

– Work with CoolDavis, Yolo Energy Watch, PG&E, and others to integrate the research into their customer service delivery program designs, assist with messaging, and help develop delivery approaches

– Reliance on local contractor network– Work with CEC, LGC, COGs, and others to

disseminate products and approaches to other Central Valley communities

PG&E Green Communities “Dashboards” for Davis

• Energy Usage Overview and GHG Inventory reports; based on 3+ year detailed energy histories and incentive payments by program

• “Interactive” tool allows energy details to appear as the user slides the cursor over charts

• Identifies characteristics and trends in energy usage for a variety of market segments (single and multi-family housing, commercial, municipal)

• Data aggregated at ZIP+4 to protect individual customer usage and billing data (area of ~ 20-30 homes)

• Can serve as a “target marketing” tool

3 Green Communities Example Reports

• Energy Summary for Davis, 2005-2013• Residential and Non-residential Energy Usage –

trends, segments, and avoided emissions• PV Generation Interconnection capacity

Davis GIS Map Examples (7)

• Over 20 maps developed based on data from assessor’s office, land use and property records, construction permits, aerial photos, DavisFREE research, and other sources

• Can change map coverage area, resolution level, color enhancements, etc. to support neighborhood-level energy analyses and target marketing efforts

Example Maps

• Single Family Housing by Year of Construction• Single Family Housing – Rentals vs. Owner-Occupied• Current Rooftop Photovoltaic Installations• Yolo County Crop Residues, by Energy Value• Overlay map of Crop Residues with Direct Solar Energy

potential• Regional Wind Energy Map• City-Owned “Planning Area” Properties with Community-

Scale PV Potential