The Abidjan-based lender published an environmental and social impact assessment in May for the Lamu project, which was planned near a UNESCO World Heritage Site but which was halted by a local environmental tribunal.

The project to build a 1,050 megawatt plant in eastern Kenya was backed by Kenyan and Chinese investors. Construction was originally planned to start in 2015.

Dozens of top banks, insurers and development finance institutions are restricting coal investments, as climate activists and investors voice growing concerns about the impact of burning fossil fuels, particularly coal.

AfDB President Akinwumi Adesina told Reuters at a conference in South Africa the bank took environmental concerns seriously and was focusing on renewable energy, adding that coal projects risked becoming “stranded assets” on the AfDB’s balance sheet.

Wale Shonibare, AfDB’s acting vice president for energy, said the bank “did not move forward with the Lamu Coal transaction and had no plans to do so in the future”.

The AfDB president had told U.N. climate talks in September that the bank was “getting out of coal,” but he did not give a timeframe or specify whether the Lamu project would be affected.

The AfDB’s retreat from coal will make it harder for the Lamu project to progress.

The AfDB has been a major funder of coal projects in Africa. In the past decade, it has lent more than 1.5 billion euros ($1.65 billion) to South African utility Eskom for its Medupi coal plant and more than 50 million euros for the Sendou coal plant in Senegal.

It still plans to finance flue gas desulfurisation units at Medupi to mitigate sulfur emissions produced by burning coal.