Getting electricity: System average interruption frequency index (SAIF in Tonga

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

Tonga: Getting electricity: System average interruption frequency index (SAIF was 9.2 DB16-20 methodology in 2019. ▼ Falling

Latest (2019)

9.2 DB16-20 methodology

Change on year

unchanged

World rank

22nd

of 124 countries

All-time high

14.73 DB16-20 methodology

in 2016

All-time low

9.2 DB16-20 methodology

in 2018

Years of data

2014–2019

Getting electricity: System average interruption frequency index (SAIF in Tonga, 2014–2019

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

Analysis

The most recent figure for getting electricity: system average interruption frequency index (saif in Tonga is 9.2 DB16-20 methodology, measured in 2019. That is the lowest value across all 6 years on record.

Compared with earlier readings it is down 37.4% over ten years.

Tonga ranks 22nd of 124 countries on this measure, in the top quarter.

Countries ranked near Tonga

19 Jamaica 10.71 DB16-20 methodology compare
20 Algeria 9.85 DB16-20 methodology compare
21 Palestine 9.48 DB16-20 methodology compare
23 Palau 8.9 DB16-20 methodology compare
24 Bolivia 8.6 DB16-20 methodology compare
25 Armenia 7.2 DB16-20 methodology compare

See the full ranking of 125 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 frequency index (saif in Tonga?: Getting electricity: system average interruption frequency index (saif in Tonga was 9.2 DB16-20 methodology in 2019, according to the World Bank.
What is the highest getting electricity: system average interruption frequency index (saif recorded in Tonga?: The highest recorded value was 14.73 DB16-20 methodology in 2016.
What is the lowest getting electricity: system average interruption frequency index (saif recorded in Tonga?: The lowest recorded value was 9.2 DB16-20 methodology in 2018.
How does Tonga rank for getting electricity: system average interruption frequency index (saif?: Tonga ranks 22nd out of 124 countries with data for 2019.
Is getting electricity: system average interruption frequency index (saif rising or falling in Tonga?: Over the last ten years it is down 37.4%. 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 frequency index (SAIFI) (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 frequency index (SAIFI) (DB16-20 methodology)
Unit: DB16-20 methodology
Source: World Bank
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 125 places, 747 data points, 2014–2019
Last refreshed: 10 August 2026

The system average interruption frequency index (SAIFI) is the average number of service interruptions experienced by a customer in a year. The index is computed based on the methodology in the DB16-20 studies.