Medford Township Public Schools has solar roof and ground arrays at seven locations, including its transportation facility. Pictured is the district’s Chairville Elementary School and the transportation center.
As Medford Township (N.J.) Public Schools’ transportation department focuses on safely transporting students to and from school each day, there is also considerable effort among officials to reduce the district’s carbon footprint and save money or generate revenue.
The district has accomplished all of this under several initiatives, including a solar project, running all of its school buses and other vehicles with diesel engines on B20 biodiesel and sharing transportation services with a neighboring district.
Joe Biluck Jr., director of operations and technology for Medford Township Public Schools, has spearheaded many of these projects with his colleagues in the district’s business office.
Most recently, the district has begun working to partner with the New Jersey Sustainable Schools Project to develop a best practices model for districts to identify cost savings in recycling, resource use, energy conservation, etc.
“It provides a benchmark for school districts to review against their operations,” Biluck explains. “For example, if a K-8 district’s utility costs are $400,000 a year, we can compare those costs against a high-performing school district and what it’s paying for its utility costs and share the various measures a school district could implement to achieve those costs, and you can develop a strategy based on those practices.”
Biluck adds that this partnership is designed to spread the word about what his district has done, which could help others.
“What we’re finding is that there’s not a lot of awareness about these practices, how they can be implemented and the benefits that are associated with them,” he explains. “We feel as though it’s our responsibility, since we’ve been successful, to share this information with folks.”
Solar project, sustainability practices
Two years ago, Medford Township Public Schools energized its solar electric generation panel system, which comprises panels at seven locations, including schools and the transportation center. Biluck says it is the largest solar array project for a K-8 school district in the state. The system generates just under 3 megawatts of power annually, which reduces the district’s utility costs by about $300,000.
To fund the $22 million project, the district developed a power purchase agreement, allowing it to enter a private-public partnership with an investment group that would pay for system installation, maintenance and operation. The district partnered with Nautilus Solar, which owns the system.
“We provided all of the assets on which to construct the ground arrays, the roof arrays and the parking canopies, and we entered into a long-term agreement to buy the power that’s generated,” Biluck explains. “So although the district does not own the system, where we benefit is that the kilowatts that are generated from those arrays are sold back to us at a fixed price with a fixed escalator; we’ve created a predictable rate for our power.”
Medford Township Public Schools has also adopted an aggressive resource and energy conservation program.
As an example, geothermal heating and cooling systems were incorporated into the construction of some of its schools. Biluck says that the initial costs were higher than non-geothermal systems, but incentive programs are offered through the state of New Jersey to help offset the costs. The district received approximately $400,000 for the geothermal systems from the state’s Department of Public Utilities after submitting an application for funding.
Biodiesel vehicles reduce operating costs
The district has also achieved cost savings by fueling its vehicles with B20 biodiesel for the last 15 years. Medford Township began running its first school bus — bus No. 74 — on the alternative fuel as part of a demonstration project in conjunction with the New Jersey Clean Energy Program and the U.S. Department of Energy (DOE). Biluck says the bus was the first in the state to run on the fuel.
“We purchased a fuel tank using funding provided by the U.S. DOE and started to do emission testing on some of the vehicles that were going to run on biodiesel so that we could develop an emissions profile prior to introducing the fuel,” he explains.
After the demonstration project ended, the district decided to run all of its vehicles with diesel engines on biodiesel.
“We continued to monitor the emissions program, and a report was released from the New Jersey Clean Energy Program — they found that the units running on B20 had a 2 cent per mile lower operating expense compared to the units running on diesel,” Biluck says. “The reduction is attributed to reduction in particulate matter, which extended the life of the exhaust systems, and increased lubricity in the biodiesel compared to the diesel, so the injection systems last longer. We weren’t replacing certain bus components on the biodiesel buses as frequently as we were on the diesel buses. That equated to about $10,000 a year, so over the last 15 years, we’ve saved $130,000 to $150,000.”
(Bus No. 74 was retired in 2011 after more than 13 years of service because of New Jersey’s mandatory retirement age for school buses.)