The need for additional academic and program space is expected to continue at a modest pace in the near future. Constructing additional buildings typically means more energy consumption. However, Salisbury University continually strives to improve the efficiency of existing buildings and major new construction projects. In addition, an energy manager controls and optimizes building HVAC systems using an electronic building automation system. In 2007, a campuswide energy service contract (ESCO) was initiated which replaced lighting, plumbing fixtures, pumps, chillers and other aging infrastructure with more efficient equipment. The project resulted in significant utility reductions including electricity, natural gas, heating oil and water.
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As an energy saving initiative, occupancy sensors are a standard feature in all new construction and major renovations. These sensors automatically turn lights off after an area is unoccupied for a set period of time. Occupancy sensors are estimated to produce a savings of 30%, and are especially effective in areas which have frequent periods of inactivity. Sensors are now a standard feature in new construction projects and major renovations and may be observed throughout the campus.
A solar hot water array was installed on the roof of Nanticoke Hall during the renovation in 2011. The array consists of a series of glass chambers surrounding black-painted copper piping and copper flashing. The system provides a year-round, renewable source of heated water for the domestic hot water in this residence hall. In addition, the solar hot water was designed to serve as the heat source for the mechanical room in the basement of Nanticoke.
During the Comprehensive Housing Renovation Program (CHRP), 3 residence halls were renovated and HVAC systems were upgraded to higher efficiency geothermal equipment which also makes hot water. Three of the residence halls have exactly the same square footage and number of beds. One of those, Pocomoke Hall, had a relatively new boiler and chiller system when the renovation was performed so it remained. The Wicomico Hall and Manokin Hall required HVAC replacement due to age and condition. Geothermal systems were installed in Wicomico and Manokin, establishing a laboratory-like scenario! The three buildings are used in the same way, have the same number of beds, and differ only in the heating and cooling systems. Data has shown that the geothermal systems perform best in the extremes of weather - very hot and very cold. Annually, the geothermal systems use approximately 30% less energy than the traditional alternative! To illustrate that point, during the winter vortex in January of 2014,;
In 2010, the University System of Maryland (USM) and the Department of General Services executed three (3), twenty year Power Purchase Agreements for renewable energy. The projects are:
SU purchases a percentage of the output from each project, which equates to approximately 12 percent of our total electricity use. The Maryland wind project, Roth Rock Wind Farm, became operational in July 2011, with the Pinnacle Project (West Virginia) expected to be operational in the first quarter 2012; and the solar project at Mount St. Mary’s operational later in 2012.
Additional renewable energy is purchased under the Renewable Portfolio Standard (RPS), which is a requirement of our electricity providers under Maryland law. For 2014, electricity providers are required to provide renewable energy equivalent to 12.8% of our consumption. To put this in perspective, for every 100 kilowatt hours purchased, 12.8 kilowatt hours will be from renewable energy sources. This percentage will gradually increase until 2022, when it will remain 20%.
In 2007, Salisbury University partnered with PEPCO Energy Services to decrease water usage and energy consumption for a projected $5.3 million savings. PEPCO provided services for 17 projects, including the replacement of aging mechanical equipment or the installation of more efficient equipment for heating and cooling in 14 buildings, the installation of tens of thousands of more energy-efficient bulbs and lighting fixtures and the installation of energy “misers” on vending machines.
The project also involves upgrading approximately 1,700 plumbing fixtures to conserve 11 million gallons of water annually and reducing excessive air and solar infiltration to building interiors in 38 locations.
Funding for the project comes from the guaranteed savings through the investment, as well as from residence hall renovation funding. In all, the project is expected to save water equal to the amount consumed annually by 473 family homes, electricity sufficient to power 1,600 homes, and will reduce emissions equal to removing 1,571 cars from the road.
Ingenco operates an electricity generation station powered by recovered landfill gas at the Wicomico County landfill. In 2013, SU purchased 8,000 RECs from the facility to offset emissions from campus operations. The Wicomico County landfill is the repository for the solid waste from the campus and supporting the landfill gas power generation operations is an environmentally responsible way to reduce the impact of the solid waste. The estimated landfill gas being destroyed to produce 8,000 RECs is the environmental equivalent of the annual greenhouse gas emissions from 7,552 passenger vehicles, the carbon dioxide emissions from burning 210 railcars of coal or the energy benefit of powering 539 homes.
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