The 51-Megawatt solar plant, Paradise Park, in Westmoreland, is to be officially commissioned shortly.
Construction of the solar park started in September 2018 and operations began in June.
Energy Minister Fayval Williams said with the addition of the new plant, Jamaica will be generating 17 per cent of its electricity from renewable sources.
The plant, which is owned and operated by Eight Rivers Energy Company, will provide a yearly output of 82,000 Megawatt hours to be sold to the Jamaica Public Service for the next 20 years.
The facility represents a total investment of US$64 million.