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264 He provided a rendering of Roseville City Hall with solar panels on the rooftop. <br />265 When roof repairs are needed, they can take the panels off, stack them near the <br />266 corners of the buildings to allow them to get at most of the roof. <br />267 <br />268 Chair Cihacek inquired when the City will need to replace the roof. <br />269 <br />270 Mr. Culver responded the roof on City Hall was refurbished in 2014 and they are <br />271 on a 20 -year life cycle before major repair is needed. With solar panels on the roof, <br />272 there is less wear. If they had 25 -year panels on the roof, they would try to delay it <br />273 as much as possible. If they did not have panels on the roof, it would be redone in <br />274 about 2036. <br />275 <br />276 Member Wozniak inquired what the proposed size of this installation would be. <br />277 <br />278 Mr. Weir responded the installation on City Hall would be about 204 kilowatts, on <br />279 Public Works it would be 299 kilowatts, and on the Skating Center it would be 230 <br />280 kilowatts. The total for all three buildings would be about 735 kilowatts. <br />281 <br />282 Mr. Culver stated the Public Works roof is a little more complicated because it <br />283 consists of three different roof ages. The largest roof in the middle was redone in <br />284 2014 and the oldest part is scheduled for major reconstruction neat year. The <br />285 remaining part is scheduled to be redone in about 10 years. <br />286 <br />287 Chair Cihacek inquired how they do roof maintenance. <br />288 <br />289 Mr. Culver responded they do annual patching as needed. When it is replaced, they <br />290 remove all the rock, replace the liner, and reset everything. If there are solar panels <br />291 on the roof, they would have to be removed and then replaced after the work is <br />292 done. It usually takes one to two weeks to replace the roof but could possibly be <br />293 done in a more compressed time if needed. <br />294 <br />295 Chair Cihacek inquired what the financial loss would be for the two weeks the solar <br />296 panels would be down and if it is possible to put them in ground applications during <br />297 that time. <br />298 <br />299 Mr. Weir responded they have in their contract that for 72 hours there would be no <br />300 financial loss. After that they would factor in an average daily production lost. <br />301 They would not be able to install them on the ground that quickly and it would be <br />302 cost prohibitive to build something to hold the solar panel on the ground. <br />303 <br />304 He continued his presentation and provided two offers to the City for a community <br />305 solar garden. One option would not involve any installed solar panels (off site <br />306 Community Solar Garden) and the other option would involve installing a <br />307 Community Solar Garden on the various rooftops with an added lease payment. <br />308 Xcel looks at the last two years bills and averages kilowatt usage hours and allows <br />Page 7 of 16 <br />