RFQ - SBFD Solar PV - Performance Services Inc

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U P Performance Services c Describe some of the tech °noI ogies and strategies I ikely to be relevant to this project. Crystalline solar panel technology will be used in this project with efficiencies over 20%. Crystalline technologies are the oldest, most reliable and proven technologies available to the solar industry. The limited roof space would require a 40OW or larger panel to most efficiently utilize the fire station's available space. String inverter design is best fit for projects ranging in size from 50kW up to 2MW. The redundancy of design assures any system failure will not go unnoticed immediately. In rooftop applications, the addition of solar optimizers may prove to be a cost-effective solution for long term increased solar production. Indiana is currently following NEC 2008 which doesn't require rapid shutdown that is currently enlisted in NEC 2014. The rapid shutdown requirement in later codes is for fire safety. We believe this system should be installed to the latest NEC codes to ensure South Bend's fire station is a flagship and industry - recognized example of solar facility integration. This system can also be used for the training of South Bend firefighters to better understand how to fight fires with solar panels. Performance Services will facilitate this training, as well as provide marketing support if desired. As it relates to strategies relevant to this project and based on our experience, we believe that the fire station needs to be further assessed for energy savings opportunities so that the solar solution is "right - sized" to the true energy footprint of the building. In looking at the fire station facility drawings and utility bills, our first pass evaluation is as follows: The electrical usage is around 17 kWh/yr/sgft. This amount puts the facility at almost double the national mean rate of 9.8 kWh/yr/sgft for a fire station. In looking at the HVAC design and the age of the systems, there is an excellent opportunity to implement advanced energy conservation measures on the existing controls system to reduce the usage of the facility. As we have described above, energy savings through controls' strategies is a true strength of Performance Services. Specifically, PSI has our own controls division (about a quarter of our company) who work exclusively on PSI's project to deliver energy and operational savings to our customers. We believe that we are the best -suited company to "right -size" your energy use and therefore provide a much better solar solution. The existing roof area is only large enough for the installation of a solar system to offset about half of the buildings current electrical usage. With the implementation of other improvements, it is possible to be close to net -zero for the electrical usage of the facility. Confidential & Proprietary Document 9. Technical Approach - 3