Though thin on commitments, the Saudi pledge was symbolically important because the desert kingdom has been seen as reluctant to join the fight against global warming.
The pledge, just weeks ahead of a U.N. Climate summit in Paris, was mainly focused on efforts to diversify the Saudi economy and study the impact on it by international policies to fight climate change. Saudi Arabia gets about 80-90 percent of its revenue from oil exports.
The submission said diversification efforts could help Saudi Arabia avoid 130 million tons of carbon dioxide emissions annually by 2030, but didn't give a detailed explanation of how to achieve that.
The submission noted that Saudi Arabia, as a desert and coastal nation, is vulnerable to climate change impacts such as heat waves and rising seas.
Jennifer Morgan of the World Resources Institute, a Washington-based environmental think tank, said it was the first time that Saudi Arabia has committed itself to act to address climate change.
"It demonstrates that Saudi Arabia understands the impacts of climate change on its people and the role that renewable energy can play in diversifying its economy," Morgan said.
