Tonga - Electricity consumption
| Date | Generation GWh | Consumption GWh | Consumption per capita kW |
|---|---|---|---|
| 2023 | 73 | 67 | 640.7 |
| 2022 | 73 | 67 | 639.0 |
| 2021 | 74 | 68 | 644.6 |
| 2020 | 75 | 69 | 689.0 |
| 2019 | 73 | 67 | 673.0 |
| 2018 | 69 | 63 | 628.0 |
| 2017 | 67 | 62 | 609.9 |
| 2016 | 60 | 55 | 548.5 |
| 2015 | 57 | 52 | 516.8 |
| 2014 | 53 | 48 | 472.5 |
| 2013 | 51 | 46 | 451.7 |
| 2012 | 50 | 44 | 430.5 |
| 2011 | 48 | 41 | 402.0 |
| 2010 | 49 | 42 | 405.6 |
| 2009 | 51 | 43 | 416.3 |
| 2008 | 50 | 42 | 411.8 |
| 2007 | 48 | 40 | 392.2 |
| 2006 | 46 | 38 | 372.6 |
| 2005 | 45 | 37 | 366.3 |
| 2004 | 44 | 40 | 396.0 |
| 2003 | 42 | 38 | 380.0 |
| 2002 | 38 | 34 | 340.0 |
| 2001 | 37 | 33 | 330.0 |
| 2000 | 30 | 25 | 252.5 |
| 1999 | 33 | 31 | 310.0 |
| 1998 | 35 | 33 | 332.1 |
| 1997 | 34 | 32 | 322.7 |
| 1996 | 32 | 30 | 303.7 |
| 1995 | 28 | 26 | 268.5 |
| 1994 | 27 | 25 | 258.9 |
| 1993 | 25 | 23 | 239.7 |
| 1992 | 25 | 23 | 239.7 |
| 1991 | 24 | 22 | 232.5 |
| 1990 | 23 | 21 | 222.8 |
| 1989 | 21 | 20 | 205.6 |
| 1988 | 20 | 19 | 195.8 |
| 1987 | 16 | 15 | 158.3 |
| 1986 | 12 | 11 | 118.7 |
| 1985 | 12 | 11 | 117.5 |
| 1984 | 12 | 11 | 117.5 |
| 1983 | 12 | 11 | 118.7 |
| 1982 | 12 | 11 | 120.0 |
| 1981 | 12 | 11 | 120.0 |
| 1980 | 9 | 8 | 91.0 |