Guam
GUMGuam generates no hydro electricity at all, in a region built on it.
60% of grids in Oceania draw more than a tenth of their power from hydro.
What this grid depends on
Three measures that say more about a country than how much power it makes. Open “what this means” on any of them if the term is new.
Cleaner than 2 in 10 grids worldwide.
What this means
How much planet-warming gas is released to make one unit of electricity. Two countries can generate exactly the same amount and one of them be ten times dirtier doing it. Lower is better.
Guam generates almost exactly what it uses, with next to nothing crossing its borders.
What this means
Electricity can be sold across a border like anything else, through high-voltage lines connecting one country's grid to the next. Buying it in means leaning on a neighbour to keep the lights on. Selling it means generating more than the country needs.
Also true of Guam
Guam's electricity is dirtier than the world average.
608 grams of CO2e a kilowatt-hour against a world figure of 458 — 33% above.
Guam uses more electricity per person than any country in Oceania.
11,085 kWh per person per year, first of 10.
Guam’s neighbours
Papua New GuineaHydro overtook gas on Papua New Guinea's grid in 2023.
PhilippinesThe Philippines is first in Asia for geothermal.
JapanGas overtook coal on Japan's grid in 2009.
TaiwanGas overtook coal on Taiwan's grid in 2024.
Solomon IslandsThe Solomon Islands generates no hydro electricity at all, in a region built on it.
Figures are for 2024, the most recent year reported for Guam. Generation shares are a percentage of electricity generated, not of energy used. How this is calculated.