Members of the Naperville City Council voted Tuesday to approve a measure that seeks to revise the terms of the city's proposed contract with the Illinois Municipal Electric Agency. Alicia Fabbre/For the Daily Herald

Naperville City Council members Tuesday signaled support for a 20-year contract extension with the agency that supplies electricity to the city as long as certain conditions are met.

The city is proposing contract revisions that would increase Naperville’s voting rights within the Illinois Municipal Electric Agency and would set measurable benchmarks to lower its carbon footprint.

City council members voted 7-2 to support the measure, with Ian Holzhauer and Mary Gibson casting dissenting votes.

The contract proposal comes after months of debate about whether to extend the

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