Aitutaki is next in line under a local budget with support funding from the Asian Development Bank.
Stage one for Aitutaki project will provide the island 20 per cent of its overall renewable energy power-consumption.
The international tender has had a large response from companies in China, Japan, US, Australia, New Zealand, Fiji, and the Cook Islands.
Representatives from those firms travelled to Aitutaki last Thursday for a site inspection and information collection to support their bids for the project.
This follows the successful roll-out of other solar initiatives in the Northern Group under grant funding from New Zealand.
Southern group projects under EU and Asian Development Bank funding, continues with civil work now underway on Mitiaro and to be followed by Mauke, Atiu and Mangaia.
Rarotonga will be next with a battery energy storage system to be installed before Christmas. This will enable with the installation of PECF Solar Panels funded under the Southern Group Renewable Energy Project.