Tesla Inc  Chief Executive Officer Elon Musk said on Tuesday that the company is open to licensing software and supplying powertrains and batteries.

Tesla has previously supplied batteries to Mercedes and Toyota Motor  under separate partnership deals. Battery manufacturing is an area that analysts and industry officials say the U.S. electric car maker has a competitive edge compared with legacy automakers.

“Tesla is open to licensing software and supplying powertrains & batteries. We’re just trying to accelerate sustainable energy, not crush competitors!” Musk said in message on Twitter.

It was unclear which types of batteries it will supply. Tesla currently runs a battery joint venture with Panasonic Corp  and also sources batteries from China’s Contemporary Amperex Technology (CATL) and South Korea’s LG Chem

Tesla is also planning to build its own battery manufacturing facility at its Fremont, California, plant under its “roadrunner” project.

Batteries are the most expensive and important component of electric vehicles (EV).

“The supply could lower the entry barriers for startup EV makers, posing a potential threat to legacy automakers, which have their own platforms,” said Park Chul-wan, a South Korean battery expert and a professor at Seojeong University.

“The strategy, if successful, will increase the EV market’s dependence on Tesla,” he said.