Ageto Energy worked with DEIF to reconfigure the power system so that energy generated by the solar panels could be more efficiently stored by the batteries, using the generators only for back-up power when needed. The ultimate solution was the DEIF AGC-150 controller, which enabled Ageto Energy to synchronize the two generators and run them parallel to the AC bus.
The batteries serve as the reservoir of the facility’s energy storage system. The batteries store the power charged by the solar panels on the building’s rooftop, or from the generators themselves. “When the Ageto ARC controller calls for the DEIF AGC-150 to start, it runs at a base load set point, in parallel to the AC bus,” Murray explains, “and the DEIF controller gets a signal from Ageto to start the generator, ramping it up to its set point and keeping it there.”
The AGC-150 controller also provides important safety factors, monitoring the oil and cooling temperatures in order to protect the generators, Murray says.
“If we hadn’t brought in Ageto and DEIF, we would have the generators running all the time, and we wouldn’t be able to efficiently run the building,” says Holli Riebel, executive director of Headwaters Center. “We rely mostly on the power of the sun and the battery system, and without the DEIF controller, we wouldn’t be able to modulate the generator system for consistent energy.”