This question was voided on 16 December 2016 due to a change in how the Department of Energy (DoE) calculates the total number of Partners and in the way DoE data is presented at the links provided. These changes make the clarification issued on October 4th inconsistent with the way DoE counts affiliates. In 2012, the US Department of Energy (DOE) launched the Workplace Charging Challenge with the goal of installing electric vehicle charging stations in workplace parking lots of at least 500 employers by 2018 (Energy Department). In 2015, 260 organizations participated as partners. Learn more about Workplace Charging Challenge partners here. The question will be resolved using DOE data. Examples of progress reports from 2014 and 2015 can be found here: 2014 Report, 2015 Report. For more information on electric vehicle charging stations, see Alternative Fuels Data Center. Clarification Released 10/4/2016: Subsidiaries of companies listed as "Partners" in DOE's workplace challenge do not count as separate partners. For example, the website currently lists Duke Energy, with Duke Energy Carolinas, Duke Energy Florida, Duke Energy Indiana, Duke Energy Kentucky, Duke Energy Ohio, and Duke Energy Progress listed in italics as subsidiaries. Duke Energy counts as one partner. Recommended Questions Will Tesla Motors deliver more than 80,000 BEVs to customers in calendar year 2016? Will any other US state adopt California’s Zero Emission Vehicle (ZEV) Mandate before 1 January 2017?