11-03-14 JDA - Laserfiche WebLink

Home Browse Search

TCAAP Energy Integration Resiliency Framework Policy White Paper – Unique Opportunities for the TCAAP Site 16 transit facility, integrating large fleets of EVs. With no existing loads on site, a facility that may house dozens of electric hybrid buses at night and EVs during the day could provide a predictable energy load. Combined with other large-scale energy storage and on-site renewables, the nature of this load growth could open up opportunities for additional utility innovative technology demonstration. Engaging potential partners on a comprehensive transit strategy could result in mutually beneficial development and operational costs, and a model of collaboration between the energy and transportation sectors. 3.5. Planning Streets for Optimal Building Orientation In Minnesota, building orientation has a significant impact on heating and cooling needs, and can also increase the potential for rooftop solar systems. Windows on the south side of a building gain heat throughout the day, while windows facing north lose heat. The optimal orientation for PV systems is facing south-southwest to generate solar electricity when it is needed the most – late in the day during peak demand. For these reasons, there is an opportunity for subdivision plans to consider optimal building orientation for energy purposes. The first factor to consider is street orientation as it is common practice to develop a building or home parallel to the street. The second factor is flexible zoning that allows for buildings to be oriented in different directions wi thin the boundary of a site. While street-facing entrances will increase site walkability, canted buildings could offer opportunities for welcoming public outdoor spaces. Landscaping placement can also play a role in buildings’ energy consumption. Deciduous trees can provide passive cooling on the west side of a building during the summer, while conifers on the north side can buffer the wind. Tall trees planted to the south can also hinder access to solar. 3.6. Coordination with Public Works The infrastructure needs of community energy systems (microgrids, CHP, district heating and cooling, etc.) can be extensive and expensive. The cost of constructing these facilities can be drastically reduced when constructed in conjunction with other large-scale utilities (water main, sanitary, storm sewer, etc.). District energy facilities are the most conducive to shared construction, and t ypically coordinated construction can experience cost savings of up to 35% for the installation of a district energy system, primarily due to the reduction in civil construction and surface restoration. Another advantage of cooperative construction of municipal utilities and district heating is the possibility of reduced excavation and cost for the installation of municipal utilities. In Mi nnesota, water main lines are typically installed at a minimum depth of seven feet to prevent freezing. To prevent contamination of the drinking water, the sanitary sewer must be installed deeper than the water main, typically ten feet deep or more. Because district heating systems have residual heat loss through the