The best countries for clean energy production 2025

As the world is about to put a new calendar up on the wall, the 2030 Paris Agreement target of limiting climate change to a global average of 1.5°C draws closer. This landmark decision to reduce climate change was made 10 years ago, and it’s going to require major shifts to energy sources for countries across the globe.¹The Paris Agreement. United Nations Framework Convention on Climate Change. 2025.

So, which countries are leading the way in terms of clean energy generation? The energy comparison service iSelect, has taken a look at the numbers, ranking 50 countries across the planet for both the proportion of their energy generation that comes from clean energy sources and the amount of clean energy produced per capita.

Countries with the best share of energy production from clean energy 

1.     Denmark

Leading the way for clean energy as a share of all energy production is Denmark, with a score of 5.91/10. Over half of all electricity comes from wind power at 57.90%. For solar power, Denmark was 11^th at 11.30%, and Denmark had the biggest share of power generation from bioenergy at 18.80%. In contrast, a total of 11.94% of Denmark’s energy production came from fossil fuels – 2.54% from gas, 7.03% from coal, and 2.37% from other fossil fuels.

2.     Finland

Second for clean energy as a share of total energy production is Finland, with a score of 5.13/10. While Finland has almost no solar power production (just 1.47% of its energy comes from the sun), it has a solid range of clean energy sources. Almost a quarter of Finland’s energy comes from wind power (24.40%), while 17.10% comes from hydroelectricity, 12.40% comes from bioenergy, and 39.10% comes from nuclear power.

3.     Portugal

Rounding out the top three is Portugal, with a score of 5.03/10. Almost a third of Portugal’s power comes from wind power at 30.80%, and another 30.30% comes from hydroelectricity. Solar power accounts for 15.20%, while bioenergy accounts for 8.58%. In contrast, gas accounts for 11.70%, and nothing from coal.

The table below shows the data for all 50 countries, and where their energy comes from.

Clean energy production share of all energy generation index 2025

The lowest three countries for clean energy production 

1.     Saudi Arabia

Saudi Arabia was ranked the .lowest for clean energy production with a score of 1.51/10. The vast majority of its energy mix comes from gas (63.30%) and other fossil fuels (34.50%). Solar power is the only clean energy source powering Saudi Arabia’s energy grid, making up 1.18% of the energy grid.

2.     Hong Kong

Hong Kong ranked second-last in the list, scoring just 2.11/10. Similarly to Saudi Arabia, Hong Kong has very little in the way of clean energy production in its energy mix, with less than one percent from any particular source. Solar produced just 0.53%, while wind provided 0.43%. Almost two thirds of Hong Kong’s energy comes from gas, while just over a third comes from coal.

3.     Iran

With 85.90% of the nation’s energy coming from gas power, Iran scored third-last with a score of 2.13/10. The biggest source of clean energy in the country is hydroelectricity, which produces 4.77% of the nation’s energy mix.

How does Australia perform?

Australia ranks right in the middle at 24^th with a score of 3.62/10. Just over two thirds come from fossil fuel sources – 45.20% from coal, 17.40% from gas, and 2.28% from other fossil fuels. Australia’s biggest source of clean energy is solar at 17.80%, while wind was the second-biggest at 11.60%. Hydroelectricity made up 4.56%, and 1.06% comes from bioenergy.

The Australian Government currently plans on achieving net-zero emissions by 2050. There are multiple parts of this plan, and a major factor involves de-carbonising the energy sector and switching to clean energy sources by using more solar, hydro and wind power while shutting down coal and gas plants.²Electricity and Energy Sector Plan. Department of Climate Change, Energy, the Environment and Water, Australian Government. 2025.

Opponents argue that this will lead to higher prices due to the investment required to build up Australia’s clean energy generation, while proponents note that the price of coal and gas has risen, so prices are rising anyway, while many clean energy sources are renewable and can be produced locally.³Five reasons why your power bills are sky high – and how we can help bring them down. Climate Council. 2025.