Thailand's capital city of Bangkok has unveiled a new action plan to promote decarbonization with help from the Japanese city of Yokohama.

Bangkok has been receiving technological support from Yokohama to create an eco-friendly environment since the two cities signed a memorandum of understanding in 2013.

The new action plan was revealed on Friday with Yokohama Mayor Yamanaka Takeharu in attendance. The Japanese city helped draw up the plan, which details projects to reduce carbon dioxide emissions by 2030.

They include installing more solar power panels on buildings and improving public transportation.

Yamanaka noted public participation is key to cutting carbon dioxide emissions. He said Yokohama has cut household waste by 40 percent in 10 years by having community groups discuss ways to get involved.

Bangkok Governor Chadchart Sittipunt told reporters that he hopes the Thai capital can implement its action plan as quickly as possible by learning from Yokohama's many success stories, such as engaging public participation.

Yamanaka noted that companies with solutions are critical in achieving decarbonization. He said he hopes to promote cooperation between such businesses.

Bangkok officials say they will continue to work with their counterparts in Yokohama to achieve their goals.