ReVision Energy CEO will take year-long sabbatical

Photo / Tim Greenway Fortunat Mueller, co-founder, CEO and president of ReVision Energy, plans to take a year-long sabbatical from the solar company to spend time abroad with his family.

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By Renee Cordes

The head of ReVision Energy, an employee-owned solar company headquartered in South Portland, is taking a year off to recharge.

Fortunat Mueller, the company’s co-founder, CEO and president, is planning a one-year sabbatical overseas, he announced on LinkedIn.

“For the last 20 years, I have been exceedingly blessed to have a job I love, working with people I love, working to solve one of the most critical challenges of our time,” Mueller posted. “And I’m already looking forward to coming back in the summer of 2025 and putting my shoulder back to the wheel, ‘cause we have an awful lot of work left to do.”

In the meantime, he and his wife, Shana Cook Mueller, are following through on a pledge to ensure that their daughters, now 13 and 14, grow up “with global context and understanding," he wrote. Next year will be their final year before entering high school.

In August, the family plans to move to the African city of Arusha, Tanzania, where they will live — and where the girls will go to school — until the end of the year. Then in January, the family will relocate to Switzerland, where Fortunat Mueller was born and where some relatives live. Mueller, his wife and daughters will spend the spring semester traveling and exploring Europe and beyond.

“We’re excited (and a little nervous) for what I’m sure will be a different kind of adventure for our family,” he told his LinkedIn followers, promising to share the adventures on Instagram.

He told Mainebiz that the second half of the year is still unplanned, “but we’re always open to suggestions.”

During Mueller’s absence, ReVision energy co-founder Daniel Clapp will serve as the company’s interim president and CEO.

The firm is owned by its 495 employees and expects to be closer to 525 by the end of this year, Mueller told Mainebiz. ReVision Energy is ranked No. 17 among Maine's largest employee-owned companies in the 2024 Mainebiz Book of Lists; rankings are based by the number of Maine employees.