Marshall Islands' president Hilda Heine has outlined how a huge spend on renewable energy will be used.
The $US34 million investment from the World Bank and the Green Climate Fund aims to promote energy efficiency and enhance the Marshalls' resilience to climate change.
President Heine said that would provide a more than four-fold increase in the country's renewable energy production - pushing it from two percent to nine percent.
The Marshalls Islands was among the countries most vulnerable to climate change and rising sea levels, and its reliance on expensive imported fuel for electricity also created severe financial challenges, she said in a statement.
Environment Minister David Paul said bid documents had been issued for the design, supply and installation of four solar systems, including a 2.6 megawatt floating solar plant that will be built over the Majuro Water and Sewer Company's reservoir.
Mr Paul said the government was working hard with development partners to meet its target of having 20 percent of its energy generated from renewable sources by 2020.