Solar American Cities, Accerlerating Solar Energy Adoption at a Local Level

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Presenter: Otto Van Greet, National Renewable Energy Laboratory

Presenter: Otto Van Greet, National Renewable Energy Laboratory

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  • Important notes: 5540 has a much flatter demand, so the PV system is a bit oversized for that need in the summer as shown in this graphic.


  • 1. 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
  • 2. DOE’s Approach to Solar Market Transformation
    GOALReduce market barriers to, and promote market expansion of, solar energy technologies through non-R&D activities.
    • Solar America Board for Codes and Standards
    • 3. Workforce Development
    • 4. State Technical Outreach
    • 5. Utility Technical Outreach
    • 6. Government Solar Installation Program
    • 7. Solar America Showcases
    • 8. Solar America Cities
  • Solar America Cities
    GOALAccelerate 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
  • 9. Solar America Cities
    Competitive awards granted to cities of
    100,000 or more committed to:
    • achieving a sustainable solar infrastructure
    • 10. through a comprehensive, city-wide approach
    • 11. that facilitates mainstream adoptionof solar
    • 12. and serves as a modelfor other cities to follow.
  • The 25 Solar America Cities
  • 13. 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
  • 14. Solar America City Projects
    • Streamlined permitting
    • 15. Solar access laws
    • 16. Building/zoning code review
    • 17. Creative financing programs
    • 18. Economic development studies
    • 19. Workforce development
    • 20. Code official/installer training
    • 21. K-12 Education
    • 22. Solar Mapping
    • 23. Public outreach
  • What Makes Solar America Cities Unique?
    • Federal/City partnership
    • 24. Financial assistance PLUS hands-on Technical Assistance to Cities
    • 25. Strong City and DOE network facilitates information sharing and replication potential.
  • Solar America Cities – Maximizing the Network
    Outreach Tools
    • Annual Meeting
    • 26. Solar America Cities website
    • 27. Regional workshops
    Crosscutting Analysis
    • Solar mapping
    • 28. Interconnection in area/spot networks
    • 29. Creative financing
    • 30. Rate structures
  • San Diego PV Rate Analysis
    Slide 10
  • 31. Visual of TOU rate and PV System
  • 32. Winter 5530 Kiowa Load Profile
  • 33. Summer 5530 Kiowa Load Profile
  • 34. Winter 5540 Kiowa Load Profile
  • 35. Summer 5540 Kiowa Load Profile
  • 36. 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)
  • 37. Roof Estimate - Residential
    SanGIS parcel database
    Parcel size
    Parcel classification (single family residence, duplex, store, etc.)
    Taxable value (land, improvements, total)
  • 38. Roof Estimate - Residential
    2002 American Housing Survey (AHS) for San Diego Metro Area
    Residential building area and number of stories by different characteristics
    Lot Size
  • 39. 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
  • 40. Contact Information:Otto Van Geet
    Phone: 303-384-7369
    on the web:
    Sign up for SETP quarterly newsletter by emailing:
    Slide 20
    Thank You