UVM Campus Renewable Energy Feasibility Study Building: University Heights South Complex
Unirac Racking System PVP 100kW Solar PV Inverter Cooper Crouse Hinds Disconnecting, Surge Protection Combiner Boxes Total $/watt: $4.70 Estimated Installed Cost: $530,000 (rounded to nearest $10,000) Payback (with no incentives): 19.6 years Payback: 16 years Building Annual Electrical Usage: 375,000 kWh Solar System Annual Output: 135,240 kWh % offset: % 36.06
Applicable Incentives A detailed summary of applicable incentives is included 1. Vermont Small Scale Renewable Energy Incentive Program: $2.25/watt DC up to 10 kW, $1.50/W DC for next 50 kW (up to 60 kW). Maximum incentive $97,500 or up to 50% of project costs (whichever is lower). 2. Burlington Electric Department feed in tariff purchases PV produced power at 0.20 $/kWh, the offset calculation compares this power, which is fed directly into the grid, against the adjacent structure’s utility demand. Notes: 1. Structural analysis of the roof for ability to support the proposed solar PV system will be required. This should be coordinated with the structural engineer’s ballast requirement calculations. These have been included in the estimated cost. 2. Installed cost includes all materials, labor, design, engineering…etc. based on observed market conditions in Q2 2012. 3. Financial analysis assumes BED utility 4. Electrical engineering/design of interconnection required (included in est. cost) 5. Roof substrate is assumed to be standing seam metal 6. Roof conditions should be field verified and confirmed to be OK for installation. Coordinate with manufacturer to ensure continuation 7. *Slope varies slightly for the easterly facing roof which appears to be at a 50° angle whereas all south facing slopes are 55° 8. *Both orientation and slope values refer to each of the three different adjacent buildings from east to west respectively 9. Validity of reported slopes should be confirmed through building plans prior to construction