Guam Electricity Mix
Guam generated 8.6% of its electricity from renewable sources in 2024, below the world average of 33.8%. Each kilowatt-hour produced emitted about 608 grams of CO₂.
Data year 2024 · Source: Ember and Energy Institute via Our World in Data
How much electricity in Guam comes from renewables?
Renewable sources produced 8.6% of the electricity generated in Guam in 2024. The world average was 33.8% in 2025. That is up from 0% in 2000. That ranks Guam 163rd of 210 countries and territories by renewable share.
Electricity mix by source
Oil is the largest source of electricity in Guam, at 91.4% of generation, followed by solar at 8.6%. Fossil fuels together supplied 91.4%.
Carbon intensity of electricity
Generating one kilowatt-hour of electricity in Guam emitted about 608 grams of CO₂ in 2024, 33% above the world average of 458 g. At that rate, a business using 10,000 kWh a year would be responsible for roughly 6,075 kg of CO₂ from electricity.
This is an estimate based on the generation mix. For a formal carbon report, use the grid factor published by the national energy or environment agency. Our guide to emission factors explains the difference.
How Guam compares
Countries closest to Guam when ranked by renewable share of electricity. See the full ranking.
| # | Country | Renewables | Low-carbon | g CO₂/kWh |
|---|---|---|---|---|
| 161 | United Arab Emirates | 8.8% | 31.7% | 468 |
| 162 | Saint Kitts and Nevis | 8.7% | 8.7% | 609 |
| 163 | Guam | 8.6% | 8.6% | 608 |
| 164 | Mongolia | 8.4% | 8.4% | 816 |
| 165 | Antigua and Barbuda | 8.1% | 8.1% | 595 |
Frequently asked questions
What share of electricity in Guam is renewable?
8.6% in 2024. That is up from 0% in 2000. Counting nuclear as well, 8.6% of electricity came from low-carbon sources.
What is the main source of electricity in Guam?
Oil is the largest source of electricity in Guam, at 91.4% of generation, followed by solar at 8.6%.
How clean is electricity in Guam?
Generating one kilowatt-hour emitted about 608 grams of CO₂ in 2024, 33% above the world average of 458 g.
Is renewable electricity growing in Guam?
The renewable share has risen by 8.6 percentage points, from 0% in 2000 to 8.6% in 2024.
About the data. Shares are percentages of the electricity generated inside the country in a year. Renewables are hydro, wind, solar, bioenergy and other renewable sources. Low-carbon adds nuclear. The latest year differs between countries and is shown on each page. Carbon intensity is an estimate of the CO₂ emitted per kilowatt-hour generated, including emissions over the life of each power source.
Source: Ember and the Energy Institute Statistical Review of World Energy, processed by Our World in Data and used under the CC BY 4.0 licence.
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