Dr Iain Staffell is a senior lecturer in sustainable energy at Imperial College London’s Centre for Environmental Policy. He leads the Electric Insights project reporting interactive real-time and quarterly summary information on the UK’s electricity mix.

Rapid progress towards clean energy is needed to meet the global ambition to limit warming to no more than 1.5C above pre-industrial temperatures.

But how are countries doing so far? In our Energy Revolution Global Outlook report, written with colleagues at Imperial College London and E4tech – and published by Drax – we rank progress in 25 major world economies.

Our report provides a league table of their efforts to clean up electricity generation, switch from oil to electric vehicles, deploy carbon capture and storage, eliminate fossil fuel subsidies and tackle energy efficiency.

The ten charts below compare these 25 countries today and their progress over the last decade.

Progress on clean electricity

Electricity has been the fastest sector of the economy to decarbonise as countries move away from coal and embrace low-cost renewables. Yet the average carbon intensity of electricity worldwide has fallen only 7% in the last decade to 450 grams of CO2 per kilowatt hour (gCO2/kWh).

The chart below maps the carbon intensity of electricity generation around the world and ranks the 25 major economies covered by our report. These countries include the G7 group of rich nations along with Brazil, Russia, India, China and South Africa (the “BRICS”) and others. These countries account for 80% of global population, 77% of global GDP and 73% of the world’s CO2 emissions.

Individual countries range from having virtually zero-carbon electricity (in the Nordics, France and New Zealand, left-hand columns in the lower chart) up to near-total reliance on coal (in South Africa and Poland, on the far right).

Countries across Europe and North America have almost unanimously reduced the carbon intensity of their electricity over the last decade. They have done this by reducing their reliance on coal and increasing their share of renewables, as well as by reducing electricity demand in many cases.

On the other hand, several large Asian countries – Japan, South Korea, India, Indonesia – increased their carbon intensity as they now rely more heavily on coal. China is one of the only Asian countries to be cleaning up its power system, having reduced carbon intensity by one-sixth this decade. The US is also progressing faster than most, behind only the UK and Denmark as in the chart, below.

One of the main drivers in cleaning up power systems worldwide is the rise of renewable energy. In absolute terms, China is the clear leader, having both one third of the world’s installed wind capacity and one third of installed solar.

China’s near-130 gigawatt (GW) solar capacity is roughly equal to the next three largest countries put together: Japan, Germany and the US. For wind capacity, other notable high-fliers include fourth-ranked India and Poland in twelfth, which has a larger wind capacity than Denmark, as shown in the chart, below.

However, on a per-capita basis, Denmark has the most wind, with 1,000 watts of capacity per person, and Germany the most solar at 500 watts per person.

Progress on clean transport

Clean electricity could move beyond homes and offices to power the way we move. Electric vehicles are rapidly coming down in price, and several countries are now legislating the demise of the internal combustion engine over the coming decades.

So far, some 4.5m electric vehicles have been sold worldwide, nearly half of which are in China, and a quarter in the US, as the chart below shows.

Several countries have reached a 2% market share for electric vehicles, meaning they make up 1 in 50 new cars sold. The rate in China is around double this, while Norway is well ahead of the pack with almost 1 in 2 vehicles sold now electric, as the lower chart below shows.

Cleaning up the transport sector does not just rely on new technologies, however, as people could travel less or using more efficient forms such as public transport. The amount of energy consumed per person on transportation varies greatly across the world, with the average American consuming 10 times more than the average Indian, as the charts below show.

Large countries where people routinely fly between cities consume the most, but China and India are rapidly catching up as incomes rise. Their transport energy consumption rose 80% and 60% per person over the last decade, respectively. This has dwarfed the modest increases in transport efficiency seen across Europe and North America, as in the chart, below.

Progress on energy efficiency

Efficiency is not only slow to improve in the transport sector. Improving the energy efficiency of buildings worldwide is urgently needed to reduce the demand for carbon-intensive heating.

Homes in most major countries are using less energy than they did a decade ago, per square metre of floor area. While some of this can be credited to improving building standards and more energy-efficient appliances, the gains may also be due to the residual effects of the global recession and the run of mild winters caused by rising global temperatures.

In some parts of the world, notably China and South Africa, improved living standards have lead to a rapid growth in household energy consumption, as the chart below shows.

Progress on fossil fuels and carbon capture

Government support for fossil fuels is a perverse feature of many economies, holding back the transition away from coal, oil and gas.

The definition of fossil fuel subsidies is widely disputed. Yet according to the definition used by the Organisation for Economic Cooperation and Development (OECD) several major fossil fuel producing nations with relatively small populations, such as Norway and Australia, provide hundreds of dollars per capita per year, as the chart below shows. On this measure, the UK also gives large subsidies.

One important feature of many pathways to 1.5 or 2C is to combine hard-to-avoid uses of fossil fuels, such as in steelmaking or cement, with carbon capture and storage. Today, however, there are just 18 large-scale carbon capture and storage (CCS) facilities around the world, concentrated in six countries with major oil and coal extraction industries, as the chart below shows.

Together, these CCS facilities are capable of capturing 32 million tonnes of CO2 each year. This is less than one-tenth of one percent of the roughly 37 billion tonnes of CO2 produced each year by the world’s energy sector. If CCS does see widespread rollout over the coming decades, the potential for storing CO2 underground will not pose a barrier. The US alone could store all of the CO2 produced worldwide since the start of the industrial revolution.

Conclusion

All in all, progress towards clean energy around the world is mixed, with some countries pushing ahead on many fronts but others going backwards. Overall, our rankings show that the world’s nations are falling far short of what is needed and that progress over the next decade must be far stronger to avoid the worst impacts of climate change.