The project’s first phase went online Oct. 18 when Crystal Lake’s 100 General Electric turbines began producing 150 megawatts of electricity.
The second phase was completed just before Christmas when 80 Clipper turbines, located southwest of Forest City, began producing 200 megawatts.
A power outage early in December caused the Phase 1 turbines to go down. Lance Ginn of FPL Energy said workers had them back up and running within a few days.
“Due to the cold temperatures, the turbines that are energized will heat up first before start-up. Everything is great on Phase 1,” he said.
Shortly after the majority of the Clipper turbines were erected, it was discovered the blades had a manufacturer’s defect.
“Phase 2 has some minor repairs to the blades which is under way but it will not affect energization,” Ginn said.
Thirty-seven miles of transmission line, stretching from the Crystal Lake substation to the Lime Creek substation north of Mason City, were interconnected into the grid owned and operated by Midwest Independent Transmission System Operator (MISO).
MISO is responsible for dispatching and balancing transmission resources to serve customer demand throughout the upper Midwest.
Phase 2 has its own substation and is connected to the Phase 1 substation through 5 miles of transmission line.
Ginn said all turbines are linked by fiber optic cables that run from the base of each turbine to an operations and maintenance building so the technicians can see what’s going on inside each turbine.
“We can monitor all 180 turbines and remotely monitor the power input. If the system operations should trip we’ll know it,” said Eric Johnson, plant leader for Crystal Lake 1.
A team of technicians is assigned to each phase and includes a high-voltage technician to handle substation and power transmission and a plant technician who orders parts and handles budgets.
Ginn could not confirm that there would be more phases.
“We have a developer in there and are working on securing land, but we don’t know when this is expected to be built.
“There are power purchase agreements, T-line agreements, land owner lease agreements, interconnect agreements. There is a lot of stuff to do.”





