As a result, Cuba’s share of solar in total electricity generation has risen from 5.8 per cent a year ago to over 20 per cent today.

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Battery storage–currently in place at only four of Cuba’s 55 solar parks–will need to be expanded significantly to address the evening peak demand. Wind energy will also make a growing contribution, with 19 wind farms totaling 415 MW currently being built, again with Chinese support. But the pace of the solar buildout, measured against where Cuba was just months ago, is already extraordinary.