1. Renewable energy act (Chapter 32.22) (2016 ed.) | ESCAP policy documents Management. (n.d.). Asia Pacific Energy Portal.https://policy.asiapacificenergy.org/sites/default/files/Renewable%20Energy%20Act%20%282016%20Rev.%20Ed.%29.pdf(accessed on 15 March 2023).
2. Government of the Kingdom of Tonga. (2020).Tonga's Second Nationally Determined Contribution (NDC).https://climatechange.gov.to/wp-content/uploads/2021/03/Tongas-Second-NDC.pdf(accessed on 02 February 2023).
3. Tonga Power Limited. (n.d.).Clean, green, sustainable power for Tonga.https://www.tongapower.to/Clean%2C%20Green%2C%20Sustainable%20Power%20for%20Tonga (accessed on 22 February 2023).
4. Tonga Power Limited. (n.d.).II ‘O MANUMATAONGO WIND FARM.https://www.tongapower.to/Ii%20‘o%20Manumataongo%20Wind%20Farm (accessed on 26 February 2023).
5. Tonga Power Limited. (2022, October 26).Official completion ceremony for Tonga’s 1st ever large-scale battery energy storage systems.https://www.tongapower.to/node/136 (accessed on 15 May 2023).