The Tonga Energy Commission has approved an increase in the electricity tariff from 1 June 2026, from 121.63 to 125.02 seniti per kilowatt-hour (seniti/kWh), a rise of 2.8%. The increase follows a 7.2% rise in the June wholesale price of diesel for power generation, as the ongoing conflict in the Middle East continues to push global fuel prices higher.
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Results for electricity tariff
Thursday 18 June 2026
Nuku'alofa, Tonga
Saturday 1 July 2023
Nuku'alofa, Tonga
The Competent Authority has approved a decrease in the regulated price of diesel effective 19 June 2023. This has contributed to a decrease of 29.17 seniti per litre from the last regulated price of diesel in March 2023. - Energy Commission. Kuo tali ‘e he Pule Fē’unga ke holo ‘a e totongi ‘o e lolo tisolo ‘a ia ke kamata ngāue’aki ‘i he ‘aho 19 Sune 2023. ‘Oku tokoni ‘eni ki hono holoki ‘a e totongi lolo ‘aki ‘a e seniti ‘e 29.17 ki he lita mei Ma’asi 2023. - Komisoni Ma’u’anga Ivi
Monday 3 April 2023
Nuku'alofa, Tonga
We are on a quarterly review of the regulated price of fuel which has decreased the tariff by 9.87 seniti per kWh (9.7%). The total electricity tariff will decrease from the current 101.73 seniti per kWh to 91.86 seniti per kWh. - Energy Commission / Komisoni Ma’u’anga Ivi.
Wednesday 10 September 2014
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Nuku'alofa, Tonga
The Tongan Government has committed to fund a new ‘electricity tariff lifeline’ starting on January 1, 2015 and estimated to cost around $1 million pa‘anga a year.
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