January 29, 2023
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Someone new under the sun: Mainstream hires former UTC exec


Paul Winnowski, the new CEO of REC Solar parent company Mainstream Energy. The solar installer employs about 200 people in San Luis Obispo County. (Stephen Nellis photo) San Luis Obispo-based solar firm Mainstream Energy has brought aboard a new CEO with deep experience at industrial powerhouses GE Corp. and United Technologies Corp. Paul Winnowski joins…


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