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Existing City Hall <br />The site’s current energy use (EUI) is 91. This energy use is higher than the national average for similar facility types (80.3). <br />We recommend the City execute a building envelop efficiency review and a detailed energy audit to identify strategies <br />for increased energy efficiency. Increased energy efficiency will enable the reduction of the total solar pv installation <br />required and increase the cost effectiveness of solar pv on-site. <br />Potential Renewable Energy Concept <br />The building orientation of the existing Arden Hills City Hall is ideal, with a long East-West configuration allowing <br />maximum Southern orientation. The roof’s Eastern sloping configuration is less than ideal for Solar PV, however, a fixed <br />tilt racking system can be installed in order to enhance the solar suitability of the roof configuration. The following <br />illustrates a preliminary array configuration and estimated energy generation metrics. <br />We recommend a project cost and payback assessment be pursued. <br />Renewable Energy Feasibility <br />3- 2 City of Arden Hills Energy and Sustainability <br />Site Renewable Energy Summary <br />Total Annual Electric Use: <br />Site EUI (energy use intensity): <br />National Average EUI: <br />Potential Annual Solar Energy Generation: <br />142.4 MWH <br />91 <br />80.3 <br />41.3MWH <br />29% of existing use