As automakers shift their focus to electric vehicles to achieve carbon neutrality, Toyota Motor Corp. said Tuesday it will aim to equip its cars with highly efficient solar power generation systems.

Toyota will carry out research and development with the National Institute of Advanced Industrial Science and Technology, which has expertise in renewable energy production, and Toyota Central R&D Labs Inc., a firm in the same group as the automaker that is focused on achieving technological advances.

"The three parties will seek to popularize vehicles equipped with solar power generation systems. ... To this end, (we) will pursue improvements in conversion efficiency and reductions in cost for both solar batteries and solar power generation systems," Toyota said in a statement, without giving details about the in-vehicle systems.