Cummins is more than aware of the ongoing electrification movement, and has announced a further R&D developments to become a serious supplier of electrified powertrains for the next generation of plug-ins.

The most recent announcement comes right after a deal with TM4 on the joint development of a plug-in hybrid powertrain for Class 7/8 transit buses.
In a statement on how it will transition to future technologies, Cummins said that from 2019, the company be supplying both all-electric and plug-in hybrid powertrains.
Cummins already has the know-how in electrical power generation systems on its own, but we figure will probably will again engage a partners in the venture (as with TM4 earlier):
"Electrification
Earlier this year, Cummins enhanced its efforts to commercialize its electrification capabilities, bringing together Cummins knowledge and significant experience in the electrified powertrain space. In addition, the Company is exploring potentially partnering with others to ensure development of leading technology in energy storage, power electronics, traction motor systems and component control for commercial applications. Cummins will begin electrified powertrain delivery in 2019, including battery electric and plug-in hybrids. These are just the first steps as the Company signals its intention to be the leading provider of electrified powertrains in our commercial and industrial markets."
Tom Linebarger, Cummins Chairman and CEO said:
Skoda Citijet“As a global power leader for the commercial and industrial markets we serve, we are better positioned than any other company to win in new and emerging technologies. Over the past 100 years, our ability to innovate and adapt has fueled our success and we are confident we are on the right path to do it again at this critical juncture. We are prepared to provide a range of power technologies to our customers from diesel and natural gas to fully electric and hybrid powertrains to ensure they always have the best solution for their application.”