Brazil, India, Italy and Japan vowed Tuesday to quadruple their production and consumption of renewable fuels, hoping other countries will join the pledge during UN climate talks in November.

"We hope to have a good number of signatories" by COP30, Brazilian foreign ministry official Joao Marcos Paes Leme told reporters in the capital Brasilia.

"Other European countries are also interested," he added.

Paes Leme was speaking on the sidelines of a meeting of representatives from 67 countries in the run up to COP30 climate talks in the Amazon city of Belem next month.

The pledge involves quadrupling the production of sustainable fuels such as biofuels, hydrogen and some synthetic fuels by 2035, compared to 2024 levels.

Paes Leme noted that these fuels can be used to replace planet-harmin

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