Taken from https://www.electrifyamerica.com/assets/pdf/cycle3_investment_plan_epa.a19109d1.pdf
As justification for the change, EA notes the reduction in CHAdeMO usage
Through Cycles 1 and 2, Electrify America will have built
over 800 CHAdeMO stations across the country. Together with nearly 5,000 chargers built by other
networks, legacy CHAdeMO drivers have access to a robust charging network. At the time of writing, the
ratio of CHAdeMO vehicles in operation to CHAdeMO DCFC is just 22:1. Given this, Electrify America will
focus its Cycle 3 investment on the future of electrification and deploy CCS as the non-proprietary
standard at our stations. This action helps to reinforce the automotive manufacturers’ convergence on a
single standard, reduces customer confusion,
As justification for the change, EA notes the reduction in CHAdeMO usage
In recent years, the automotive industry has converged on CCS as the non-proprietary standard of choice for vehicles in the U.S. Nissan, the last BEV manufacturer producing CHAdeMO vehicles for the North American market, has announced that the upcoming Ariya will use CCS charging (Goodwin, 2020). As sales of all new BEVs shift to CCS, Electrify America forecasts that over 90% of the non-Tesla BEVs in operation will use CCS by 2025. Electrify America is already seeing this shift at our stations. CHAdeMO usage (including Tesla via CHAdeMO adapter) accounted for just 9% of station usage in the first quarter of 2021, down from 15% in 2019, despite CHAdeMO chargers making up over 20% of all DCFC equipment at our stations. In addition, whereas historically a CHAdeMO adapter was the only way to fast charge Tesla vehicles outside of the Supercharger network, in late-2020 Setec Power released a CCS to Tesla adapter (Moloughney, 2020), thereby unlocking CCS chargers to interested Tesla drivers.