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Certasun. No Surprises.


Certasun serves customers in Illinois and Wisconsin. We’re 100% committed to an exceptional customer experience.  That’s why all customers get our No Surprises Guarantee:

  1. We will clearly and honestly explain how residential solar works and its economics.
  2. We will give you unbiased advice about the pros and cons of different types of solar financing.
  3. We will handle all the details and costs of permitting, grid interconnection, scheduling, and construction.
  4. We guarantee your system will be installed by a team of well-trained professionals.
  5. We will use the world’s best solar panels, from SunPower.  Read about what makes SunPower great.
  6. We will leave your home as clean or cleaner than when we arrived.
  7. Your roof will not leak as a result of our installation.
  8. We will guarantee your system will perform as intended over its lifetime.

Our Team

Meet the Certasun team!  (At least some of us.)  We’re with you from start to finish. Please don’t ever hesitate to give us a call.

Service Area

Certasun serves northeastern Illinois and southeastern Wisconsin.


Our Illinois service area includes the entire Chicagoland area, as far as Bourbonnais to the south and Rockford to the west. This specifically includes Cook, DuPage, Kane, Lake, McHenry, and Will counties as well as parts of Boone, DeKalb, Grundy, Kankakee, Kendall, and Winnebago counties. Certasun is headquartered in Buffalo Grove, IL.

Read about Illinois solar incentives.

Phone: (312) 638-0800



Our Wisconsin service area includes the Milwaukee area and south, including Kenosha, Milwaukee, Racine, Walworth, and Waukesha counties.  Just outside our service area?  Don’t hesitate to ask if we can build your solar system.

Read about Wisconsin solar incentives.

Phone: (262) 258-2640




We’re hiring!  Check out our careers page for more details on our open positions and what it is like to work at Certasun.

Our Management Team

Josh Lutton

Josh Lutton

Founder & President

Josh founded Certasun in 2018 after nine years as Managing Partner of Woodlawn Associates, a consulting firm providing advisory services to solar equipment manufacturers, financiers, and  solar installers. Prior to founding Woodlawn Associates, he served as an executive at Motorola. Raised in Mequon, Wisconsin, Josh now resides in Glencoe, Illinois. He enjoys spending time with his wife Laura and his two boys, Ted and Cal.

Email: [email protected]

Jesse Feinberg

Jesse Feinberg


A Certasun co-founder, Jesse previously worked at Woodlawn Associates, where he advised corporate clients on solar investments and financial strategy. Prior to that, he served as Senior Policy Advisor to an Illinois member of Congress in Washington, DC. Raised in Lake Forest, Illinois, he currently lives in the Lincoln Square neighborhood of Chicago with his wife Lindsay and kids, Karl and Alice.

Email: [email protected]

Iain Drummond

Iain Drummond

VP, Operations

Iain joined Certasun from Woodlawn Associates, where he consulted for renewable energy companies on operations and finance strategy. Iain holds an M.S. in Applied Physics and began his career in engineering and product management of analytical instruments. Raised in Evanston, Iain resides in Arlington Heights with his wife Dana and daughters, Ella and Skye.

Email: [email protected]

Mike Hines

Mike Hines

VP, Finance & Administration

Mike is an experienced entrepreneur specializing in financial and operational management.  He holds an M.S. in Accountancy from the Kellstadt Graduate School of Business at DePaul University.  A long-time Chicago area resident, Mike lives in Evanston with his wife Connie and daughter Maggie.

Email: [email protected]

Our History


We’re residential solar experts.  In 2009 our president, Josh Lutton, founded Woodlawn Associates, a management consulting firm described by one client as the “premier consulting firm in the residential solar industry.”  While at Woodlawn, Josh and many of us at Certasun consulted with some of the largest and most successful solar installers, equipment manufacturers, and financiers on how to better operate their businesses.  Now, we’re excited to be working here in the Midwest!



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