Work has begun to make the Columbia Basin College campus more energy efficient.
The college last year received a $2 million grant from the Department of Commerce, said Bill Saraceno, vice president for administrative services.
That money triggered a state matching funds guarantee that CBC could use to secure a loan.
Workers have begun to switch out light bulbs, install systems that turn off lights as the last person leaves a room and put in more efficient lighting in parking lots.
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Also up for replacement are old boilers used to heat buildings.
The measures will save $100,000 a year in energy bills, Saraceno said.