Article excerpt from Distributed Energy Magazine by Lyn Corum, January 16 2013. Read full article here.
Schools and universities are taking command of their energy use in ways that reveal a phenomenal sophistication and innovation.
School District Sells Power Into PJM
Tangent Energy Servicess Web-based active management platform began managing electricity demand at Bethlehem Area School District buildings on June 1, says Mark Stein, the school districts director of facilities and operations. The school district selected Tangent after looking at several proposals, he says.
Bethlehems school district in Pennsylvania educates 14,000 students in 22 school buildings. Those plus an additional three administration, maintenance, and transportation buildings altogether take up 2.5 million square feet. Stein says the districts peak load in 2011 was 3 MW. Using the active management platform, which monitors and controls the schools electrical demand and onsite generation, the peak load was cut in half in the summer of 2012. “Using Tangent, we can be smart about using energy,” he says.
Cutting the load in half was achieved by putting the largest 15 buildings on night load during the summer months when school is closed, even while some programs are being held at various school locations. Stein says next years electric bills based on demand charges will be reduced, saving the district $132,000 – savings that could be put to hiring two teachers, he says.
The districts cost-sharing arrangement with Tangent gives Bethlehem 70% of the energy savings and Tangent, 30% says Stein. The $132,000 savings next year will be the districts share. Full article here.