(San Francisco Chronicle) Solar power’s surging popularity in California is forcing non-solar homeowners to pay a larger share of maintaining the electricity grid, according to a long-awaited state study released Thursday.

That additional cost could range from $75 million to $254 million per year, depending on how it’s calculated. By 2020, it could range from $359 million to $1.1 billion per year, according to the study from the California Public Utilities Commission.

The study analyzes a question at the heart of an ongoing fight between utility companies and the solar industry. And it could help reshape the way solar homeowners get paid for the excess electricity they send to the grid.

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