Tonga launches tender for 6 MW of solar-plus-storage

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Tonga Power Limited (TPL), the state-owned and sole energy provider of the Kingdom of Tonga, has issued a tender for the construction of a 6 MW solar power plant combined with a storage system.

The utility is seeking proposals from independent power producers. The selected project will deliver electricity to TPL’s grid under a 25-year power purchase agreement (PPA). The proposed PPA rate should include the levelized cost of electricity for both storage and the PV system in $/kWh, as well as initial capital and ongoing O&M costs, including those for leases.

TPL will supply and install all equipment required to interconnect the solar plant to its distribution system, while the awarded contractor will fulfill all application, studies, and testing procedures to complete the interconnection process. Bids must be submitted by April 28, 2018.

TPL also said in the document that it currently has around 5.8 MW of PV systems connected to its network. One MW-sized solar park, the Matatoa Solar Project, was connected to the grid in October.

Tonga is aiming to achieve 50% renewable energy generation by 2020. According to the REEEP, around 95% of the population of the archipelago has access to electricity, with 89% of all households having grid electricity access