Kyrgyz Prime Minister Sapar Isakov apologised to Bishkek residents who are freezing in their apartments due to a power plant breakdown.
More than 240,000 residents in five cities will benefit from better heating and hot water after implementation of the project.
Kazakhstan's Energy Ministry and UN agencies are working on a new project to promote green technologies
The country is trying to move away from natural gas and other fossil fuels, which currently account for nearly 90% of its generated power.
A power plant upgrade will help serve fast-growing southwestern Uzbekistan.