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Presenter: Otto Van Greet, National Renewable Energy Laboratory
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Solar Energy Technologies Program
Solar America Cities
“Accelerating Solar Energy Adoption at a Local Level”
Otto Van Geet, PE
National Renewable Energy Laboratory (NREL)
Solar Energy Technologies Program (SETP)
U.S. Department of Energy
U.S. Department of Energy Solar Energy Technologies Program
DOE’s Approach to Solar Market Transformation
GOAL Reduce market barriers to, and promote market expansion of, solar energy technologies through non-R&D activities.
Activities Solar America Board for Codes and Standards Workforce Development State Technical Outreach Utility Technical Outreach Government Solar Installation Program Solar America Showcases Solar America Cities
U.S. Department of Energy Solar Energy Technologies Program
Solar America Cities
GOAL Accelerate solar adoption in the nation’s electricity load centers by supporting cities’ innovative efforts.
Solar America Cities contribute to the President’s energy goals of creating green jobs, building domestic renewable energy capacity, and reducing greenhouse gas emissions
U.S. Department of Energy Solar Energy Technologies Program
Solar America Cities
SELECTION PROCESS
Competitive awards granted to cities of
100,000 or more committed to:
achieving a sustainable solar infrastructure
through a comprehensive, city-wide approach
that facilitates mainstream adoption of solar
and serves as a model for other cities to follow.
U.S. Department of Energy Solar Energy Technologies Program
The 25 Solar America Cities
U.S. Department of Energy Solar Energy Technologies Program
Solar America City Partnerships
Financial Assistance:
~$200,000 per city
Technical Assistance:
~$250,000 per city
Multi-institutional “tiger teams” of solar experts provide tailored assistance based on city’s needs
U.S. Department of Energy Solar Energy Technologies Program
Solar America City Projects
Streamlined permitting
Solar access laws
Building/zoning code review
Creative financing programs
Economic development studies
Workforce development
Code official/installer training
K-12 Education
Solar Mapping
Public outreach
U.S. Department of Energy Solar Energy Technologies Program
What Makes Solar America Cities Unique?
Federal/City partnership
Financial assistance PLUS hands-on Technical Assistance to Cities
Strong City and DOE network facilitates information sharing and replication potential.
U.S. Department of Energy Solar Energy Technologies Program
Solar America Cities – Maximizing the Network
Outreach ToolsAnnual Meeting
Solar America Cities website
Regional workshops
Crosscutting AnalysisSolar mapping
Interconnection in area/spot networks
Creative financing
Rate structures
U.S. Department of Energy Solar Energy Technologies Program
San Diego PV Rate Analysis
Slide 10
U.S. Department of Energy Solar Energy Technologies Program
Visual of TOU rate and PV System
U.S. Department of Energy Solar Energy Technologies Program
Winter 5530 Kiowa Load Profile
U.S. Department of Energy Solar Energy Technologies Program
Summer 5530 Kiowa Load Profile
U.S. Department of Energy Solar Energy Technologies Program
Winter 5540 Kiowa Load Profile
U.S. Department of Energy Solar Energy Technologies Program
Summer 5540 Kiowa Load Profile
U.S. Department of Energy Solar Energy Technologies Program
Discussion/Conclusion
• time of use (TOU) rates provide the most savings to grid connected PV systems where the system peak is coincident with the utility peak, when the utility places the highest value on reduced consumption
• increased demand charges relative to energy charges do not increase the economic value of these two solar systems (because the system performance may be compromised in one 15-minute interval and all benefit of the demand savings are lost)
• changes in peak timing did not have a major effect on the economics of the system over the course of a year (because the rates tested all had peak times coincident with high PV production, changes in the peaks did not have an impact)
U.S. Department of Energy Solar Energy Technologies Program
Roof Estimate - Residential
• SanGIS parcel database– Parcel size– Parcel classification (single family
residence, duplex, store, etc.)– Taxable value (land, improvements, total)
U.S. Department of Energy Solar Energy Technologies Program
Roof Estimate - Residential
• 2002 American Housing Survey (AHS) for San Diego Metro Area– Residential building area and number of
stories by different characteristics
AttributesUsed:ValueLot Size
U.S. Department of Energy Solar Energy Technologies Program
Roof Estimate - Residential
• Build statistical relationships between AHS data to build estimates by parcel size and value – Relationship driven to median/higher
proportion occurrences– Explored use of Census demographic
variables but better estimates were generated through parcel specific data
• Doesn’t account for property specific shading issues
U.S. Department of Energy Solar Energy Technologies Program Slide 20
Contact Information:
Otto Van GeetNREL
Email: [email protected]: 303-384-7369on the web:SolarAmericaCities.energy.gov
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Thank You