city of dubuque municipal services center solar panel...

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 jkloster@cityofdubuque.org

563-589-4348