Nadarivatu Dam, Gravity dam in Nadarivatu District, Nadroga-Navosa Province, Fiji.

The Nadarivatu hydroelectric facility is a power station with turbines that generate electricity from the Sigatoka River. The installation uses the natural elevation drop of the area to produce energy efficiently.

The idea for the project emerged in 1977, but construction did not begin until decades later in 2009 and was completed in 2012. This development marked an important step in modernizing Fiji's energy infrastructure.

The dam supplies about 12% of Fiji's electricity and was paired with a valley development plan: telephone and transport links were extended and nearby households connected to the grid. It was designed by the New Zealand firm MWH Global and built by Sinohydro Corporation of China. During construction, workers reportedly raised complaints over unpaid overtime, unjustified wage deductions, safety and hygiene conditions, and the use of unqualified Chinese staff instead of local labour.

The dam is not open to the public, so it cannot be visited on foot or by car; organised excursions may be arranged through some local travel agencies. The structure stands on the upper Sigatoka River in Nadarivatu District, while the power station lies to the southwest along the Ba River, reached by a 3,225 m headrace tunnel.

Water is channeled to the turbines through an underground tunnel that is several kilometers long, representing a sophisticated engineering work. This system shows how water can be transported over long distances to generate power.