An extension to the CCS DC fast-charging standard for electric cars and light trucks is under development, which will provide higher power charging for large commercial vehicles (Class 8, and possibly 6 and 7 as well, including school and transit buses). When the Charging Interface Initiative e. V. (CharIN) task force was formed in March 2018, the new standard being developed was originally called High Power Charging (HPC) for Commercial Vehicles (HPCCV),[18] later renamed Megawatt Charging System (MCS). MCS is expected to operate in the range of 200–1500 V and 0–3000 A for a theoretical maximum power of 4.5 megawatts (MW). The proposal calls for MCS charge ports to be compatible with existing CCS and HPC chargers.[19] The task force released aggregated requirements in February 2019, which called for maximum limits of 1000 V DC (optionally, 1500 V DC) and 3000 A continuous rating.