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City of Dubuque Municipal Services Center
Solar Panel Project Iowa APWA Spring Conference
MSC Solar Project
System Description • 200 KW System
• 847 Solar Panels • 77 strings of 11 panels • 2 Inverter Panels to convert DC
power into AC electric current
Completed in November of 2011
MSC Solar Project
MSC Solar Project
Project Goals
Electrical Cost Savings ($3,500 annually) 32 Percent of the building electrical use provided from solar energy Reduce 319,556 pounds of CO2 annually
MSC Solar Project
Project Financing Purchase Power Agreement (PPA) with Eagle Point Energy (third party) Year 1 – $0.1100 KWh Year 25 - $0.22361 KWh Rate increase of 3% per year
MSC Solar Project
Alliant Energy vs.
Eagle Point Solar Iowa Utilities Board Iowa District Court
Iowa Supreme Court
MSC Solar Project
Lease Agreement - 22 years Lease Payments $2,049.02 month – 1st year $3,690.28 month – 22nd year End of Lease The system becomes owned by the City Productive Life of the Panels 40 years
MSC Solar Project
2014 The Iowa Supreme Court sided with Eagle
Point Energy
May 1, 2015 The 2011 Purchase Power Agreement was reinstated
MSC Solar Project
Municipal Services Center • Public Works Department • Water Distribution
Division Main Building - 126,450 sq.ft Facility Completed in 2005
MSC Solar Project Facility Electrical Use Two Year Average 2011 M-F 7:00 a.m. – 9:00 p.m. $0.918-$.1958 321,918 peak kWh All other hours – 9:00 p.m. and weekends $0.0270-$0602 503,382 off peak kWh Yearly average $.1385 KWh
MSC Solar Project
2015 Alliant Total KWh used- 691,800 KWh Eagle Point Solar produced – 230,860 KWh Total KWH Used or sent back to the grid - 922,660 KWh
MSC Solar Project
Additional Alliant Rates Regional Transmission Service Peak Power Demand Power Factor Penalty
MSC Solar Project
System Description
• 200 KW System 847 Solar Panels 77 strings of 11 panels 2 Inverter Panels to convert DC power into AC electric current
MSC Solar Project
Panels are set at 30°
36,500 sq ft roof space
MSC Solar Project
MSC Solar Project
MSC Solar Project
MSC Solar Project
MSC Solar Project
MSC Solar Project
Project Goals Reviewed Electrical Cost Savings ($3,500 annually) 32 Percent of the buildings electrical use will be provided from solar energy Reduce 319,556 pounds of CO2 annually
MSC Solar Project
Project Goals Reviewed Electrical Cost Savings ($3,500 annually) No savings realized at this time • Power factor penalty • Low fee structure for power returned to
the grid
MSC Solar Project
Project Goals Reviewed 32 % of the buildings electrical use will be provided from solar energy Goal = 264,096 KWh Actual 4 yr. average = 233.151 KWh
MSC Solar Project
Project Goals Reviewed
Reduce 319,556 pounds of CO2 annually Actual = 291,740 (4 year average) C02 saved 1,217,282.71 (4 years)
MSC Solar Project
Lessons learned • Work with your utility provider • Understand your utility bill
• Transmission Costs • Peak Demand • Power Factor • Price paid for power returned to the grid
($0.02)
MSC Solar Project
Future of solar Storage – capture energy (weekends) store for high energy needs (lower peak demand) Alternate uses – Arizona State University
MSC Solar Project
MSC Solar Project
MSC Solar Project
City of Dubuque Solar Panel Project John Klostermann
City of Dubuque Public Works [email protected]
563-589-4348
