The residential solar company Sunnova Energy took a beating this week as investors dumped their shares after the announcement of a stock offering plan rattled confidence in the company. Sunnova shares plummeted 26.7% Thursday after the residential solar company announced a $100 million at-the-market stock offering program. "This is just an arrow in the quiver just in case and the ratings agencies like to see it," Berger told CNBC in an interview Thursday. Residential solar companies have struggled in the face of high interest rates that have made installations more costly to households. Berger and Sunnova CFO Robert Lane described the stock offering as "good housekeeping."

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Persons: John Berger, Berger, that's, Sunnova, Robert Lane, Lane, Thursday's selloff Organizations: Sunnova Energy Corp, IHS, Sunnova Energy, CNBC Locations: Houston , Texas, U.S