Getting electricity: System average interruption duration index (SAIDI in Tonga

Name: Getting electricity: System average interruption duration index (SAIDI in Tonga
Creator: World Bank
License: CC BY 4.0 (World Bank Open Data)

Tonga: Getting electricity: System average interruption duration index (SAIDI was 12.31 DB16-20 methodology in 2019. ▼ Falling

Latest (2019)

12.31 DB16-20 methodology

Change on year

down 52.7%

World rank

21st

of 125 countries

All-time high

26 DB16-20 methodology

in 2018

All-time low

12.31 DB16-20 methodology

in 2019

Years of data

2014–2019

Getting electricity: System average interruption duration index (SAIDI in Tonga, 2014–2019

Source: World Bank. Measured in DB16-20 methodology.

Analysis

The most recent figure for getting electricity: system average interruption duration index (saidi in Tonga is 12.31 DB16-20 methodology, measured in 2019. That is the lowest value across all 6 years on record.

Compared with earlier readings it is down 52.7% on the previous year and down 35.1% over ten years.

Tonga ranks 21st of 125 countries on this measure, in the top quarter.

Countries ranked near Tonga

18 Cote d'Ivoire 14.42 DB16-20 methodology compare
19 Puerto Rico (US) 14.35 DB16-20 methodology compare
20 Belize 14.18 DB16-20 methodology compare
22 Kenya 12 DB16-20 methodology compare
23 Armenia 10.86 DB16-20 methodology compare
24 Uruguay 10 DB16-20 methodology compare

See the full ranking of 126 places →

More private sector data for Tonga

Merchandise trade 39.5% (2025)
Food imports 27.5% (2023)
Manufactures imports 53.8% (2023)
Merchandise imports 255.00 million current US$ (2025)
Food exports 30.9% (2023)
Manufactures exports 67.5% (2023)
Merchandise exports 13.00 million current US$ (2025)
Commercial service exports 90.10 million current US$ (2024)
Transport services 31.2% (2024)
Computer, communications and other services 29.2% (2024)

All data for Tonga →

Frequently asked questions

What is getting electricity: system average interruption duration index (saidi in Tonga?: Getting electricity: system average interruption duration index (saidi in Tonga was 12.31 DB16-20 methodology in 2019, according to the World Bank.
What is the highest getting electricity: system average interruption duration index (saidi recorded in Tonga?: The highest recorded value was 26 DB16-20 methodology in 2018.
What is the lowest getting electricity: system average interruption duration index (saidi recorded in Tonga?: The lowest recorded value was 12.31 DB16-20 methodology in 2019.
How does Tonga rank for getting electricity: system average interruption duration index (saidi?: Tonga ranks 21st out of 125 countries with data for 2019.
Is getting electricity: system average interruption duration index (saidi rising or falling in Tonga?: Over the last ten years it is down 35.1%. The long-run trend across the full record is falling.
Where does this Tonga data come from?: The figures come from the World Bank, published as part of Getting electricity: System average interruption duration index (SAIDI) (DB16-20 methodology). Statizoid updates them automatically from the source API.

Download this data

CSV · JSON — 6 observations, free to reuse under CC BY 4.0 (World Bank Open Data).

About this data

Indicator: Getting electricity: System average interruption duration index (SAIDI) (DB16-20 methodology)
Unit: DB16-20 methodology
Source: World Bank
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 126 places, 752 data points, 2014–2019
Last refreshed: 10 August 2026

The system average interruption duration index is the average total duration of outages (in hours) experienced by a customer in a year. The index is computed based on the methodology in the DB16-20 studies.