Corrigendum to “Cost-minimized combinations of wind power, solar power and electrochemical storage, powering the grid up to 99.9% of the time” [J. Power Sources 225 (2013) 60–74]

The authors regret that the following text was omitted from the acknowledgment in the original article: This work used the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation grant number OCI-1053575. The authors also regret that the first highlight that now reads “We modelled wind, solar, and storage to meet demand for 1/5 of the USA electric grid” should read: We modelled wind, solar, and storage to meet demand for 1/10 of the USA electric grid. The authors would like to apologise for any inconvenience caused.