In November 2004, voters in Columbia, Missouri approved a proposal to adopt a local renewables portfolio standard (RPS).* The initiative requires the city's municipal utility, Columbia Water & Light, to generate or purchase electricity generated from eligible renewable-energy resources at the following levels:
* 2% by December 31, 2007
* 5% by December 31, 2012
* 10% by December 31, 2017
* 15% by December 31, 2022