"As the continent that has contributed least to the climate crisis, Africa deserves the strongest possible support and solidarity," he told an online dialogue for leaders convened by the African Development Bank.
Although Africa has abundant and untapped renewable resources, it has received just two per cent of global investment in renewable energy over the past decade, he reported.
Old models of development and energy use have failed to provide Africans with universal energy access, he said, meaning hundreds of millions of people still lack reliable and affordable electricity or are cooking with polluting and harmful fuels.
"We can provide universal access to energy in Africa primarily through renewable energy. I call for a comprehensive package of support to meet this objective ahead of COP26," Guterres said, referring to the UN climate change conference in November.
"It is achievable. It is necessary. It is overdue. And it is smart: climate action is a $3 trillion investment opportunity in Africa by 2030," he added.