Published

2 years ago

May 7, 2024

Alice Rush

Wind and solar are growing faster than any other sources of electricity in history, according to new analysis from thinktank Ember.

It says they are now growing fast enough to exceed rising demand, meaning there will be a peak in fossil fuel electricity generation – and emissions – from this year.

As a result, Ember says in its latest annual review of global electricity data that a “new era of falling fossil fuel generation is imminent”.

Renewables met a record 30% of global electricity demand in 2023 and emissions from the sector would already have peaked if not for a record fall in hydropower, the analysis says.

The rise of wind and solar has been stemming the growth of fossil fuel power, which would have been 22% higher in 2023 without them, Ember says. This would have added around 4bn tonnes of carbon dioxide (GtCO2) to annual global emissions.

Nevertheless, the growth of clean electricity sources needs to accelerate to meet the global goal of tripling renewables by 2030, Ember says.

Meeting this goal would almost halve power sector emissions by the end of the decade, and put the world on a pathway aligned with the 1.5C climate target set in the Paris Agreement.

Clean capacity expansion

In 2023, more than twice as much new electricity generation from solar was added around the world as from coal, Ember says.

The share of solar within the global energy mix reached 5.5%, up from 4.6% in 2022, according to Ember. The share of wind stayed steady at 7.8% (2,304 terawatt hours, TWh).

No other sources of electricity generation have ever grown from 100TWh per year to 1,000TWh faster than solar and wind, Ember says. These took just eight and 12 years respectively, as shown in the figure below.

This sits far ahead of gas generation at 28 years, coal at 32 years and hydropower at 39 years. (Nuclear also grew from 100TWh to 1,000TWh over 12 years, the Ember figure shows, but tailed off more quickly than wind).

Global electricity generation technology expansion by technology (TWh), showing the time it has taken for key technologies to grow from 100TWh to 1,000TWh. Source: Ember.

In response to Ember’s report, Dr Hannah Ritchie, deputy editor at Our World in Data, says in a statement:

“The main headline from Ember’s 2023 review is that the world sees a bright future for solar power. It is consistently breaking records and maintains its position as the fastest-growing power source in history. This is not only driven by the need to move to clean energy, but by its exciting economics as prices continue to fall. There are early signs that a peak in power sector emissions is imminent. Faster growth in low-carbon energy will be needed to drive down emissions quickly, especially as countries electrify transport, heating and industry.”

Despite solar and wind capacity growth in 2023, generation grew more slowly than expected, rising by 513TWh – a small drop from the 517TWh added in 2022.

Solar generation growth lagged behind record high capacity addition growth of 36%, due to lower sunlight levels in 2023, especially in China, as well as underreporting of solar generation in some countries. This is expected to be temporary, notes Ember.

For wind, there was a fall in generation for the first time since 2001, down 9.1TWh or 2.1%. Low wind conditions kept load factors close to their lowest level in five years, Ember says.

Glossary

Load factor: A measure of the average output of a power station, relative to its installed capacity. This depends on technical and economic factors. For individual gas, coal or nuclear plants the load factor… Read More

Additionally, higher costs slowed wind capacity additions as developers were forced to delay or cancel projects. More than $30bn in investment was put on hold as at least 10 offshore wind projects in the US and Europe were hit by delays, the Wall Street Journal reported for example.

In other renewables, hydropower’s share of the electricity mix fell by 0.6 percentage points to 14.3% of the world’s electricity mix, Ember reports. It therefore remains the world’s largest source of clean power, but its share of the mix is now at the lowest since at least 2000, with wind and solar combined sitting just 1 percentage point behind at 13.4% (3,935TWh) .

This is despite 7GW of new hydropower capacity coming online in 2023, according to the International Renewable Energy Agency (IRENA).

Ember had previously estimated that there would be a 0.4% reduction in global power sector emissions in 2023, but the fall in hydropower generation prevented this. Instead, emissions from the power sector rose by 1%, as the hydro shortfall was mostly met by coal.

Wind and solar have expanded from 0.2% of the global electricity mix in 2000 to 13.4% in 2023. Over the last year, their share grew by another 1.5 percentage points, up from 11.9% in 2022.

Demand rises to a record high

While wind and solar were rising fast, 2023 also saw global electricity demand reaching a record high, with an increase in demand of 627TWh, Ember reports. This is the equivalent of adding the entire demand of Canada (607TWh), for example.

With wind and solar having grown by 513TWh in 2023 and nuclear by 46TWh, but hydro falling 88TWh, the remaining demand growth was met by increased fossil fuel use.

This continued the trend of recent years where the gap between clean power growth and rapidly-rising demand was met by expanded electricity generation from fossil fuels.

Moreover, last year’s increase in demand was below the recent average, rising by 2.2%. This was due to a pronounced decrease in demand from OECD countries, including the US (-1.4%) and the European Union (-3.4%).

Elsewhere, there was rapid growth in electricity demand in China, growing nearly 7%. This was the equivalent of the total global demand growth in 2023, Ember notes.

Looking ahead, demand is likely to grow even faster as energy use is increasingly electrified. Already more than half of global electricity demand growth in 2023 was driven by the rise of electric vehicles (EVs), heat pumps, electrolysers, air conditioning and data centres, the report states.

According to the International Energy Agency (IEA), nearly 14m EVs were registered globally in 2023, bringing the total number on the roads to 40m. This puts electric car sales last year at 3.5m higher than in 2022, a 35% year-on-year increase.

Ember forecasts that electricity demand will accelerate significantly going forwards, with a growth of 968TWh expected in 2024. Even faster growth would be expected on a path to staying below 1.5C under the IEA’s “NZE” scenario, it notes.

Yet clean electricity generation is expected to grow faster still, with wind,solar and other clean energy sources adding an estimated 1,300TWh in 2024, as shown in the chart below.

This would be more than double the increase in 2023 (493TWh), due to an expected uplift in the US from the Inflation Reduction Act and a reversal in short-term factors such as last year’s hydro drought, the report says.

As a result of this, Ember estimates that fossil generation will decline by 333TWh or 2% in 2024. Even more importantly, Ember says clean energy growth makes ongoing falls in power sector fossil fuel use “inevitable” – meaning a steady decline in related emissions.

Past and expected future growth in electricity demand (light blue), demand under the IEA’s 1.5C pathway (NZE, dark blue) and generation from clean energy sources including solar, wind, hydro and nuclear (green), terawatt hours. Source: Ember.

Christiana Figueres, former executive secretary of United Nations Framework Convention on Climate Change and founding partner of Global Optimism, says in a press statement:

“The fossil fuel era has reached its necessary and inevitable expiration date as these findings show so clearly. This is a critical turning point: Last century’s outdated technologies can no longer compete with the exponential innovations and declining cost curves in renewable energy and storage. All of humanity and the planet upon which we depend will be better off for it.”

Tripling renewables and what comes next

At the COP28 UN climate conference in Dubai in 2023, all countries agreed to contribute to the tripling of global renewable energy capacity by 2030, in what was seen as a “crucial” step for 1.5C.

Although the COP28 outcome did not include numerical targets, Ember says tripling renewables would mean adding 14,000TWh of annual renewable generation by 2030, compared to 2022 levels. In 2022, renewables accounted for 8,599TWh of the 28,844TWh of electricity generated globally.

After accounting for rising electricity demand, it says this tripling would help cut fossil fuel generation by 6,570TWh, or 37%. With highly-polluting coal power bearing the brunt of this reduction, power sector emissions would fall even faster, by 45% in 2030, it says.

Already, the expansion of renewable energy has slowed fossil fuel growth substantially, as the graph below shows.

After recording average annual growth of 3.5% over the decade 2004-2013, fossil fuel generation only grew by an average of 1.3% in the decade to 2023.

Fossil fuel generation was 22% lower in 2023 than it would have been without solar and wind generation. Between 2015 and 2023, wind and solar have together avoided more than 4GtCO2 emissions, Ember notes.

Global electricity generation from fossil fuels (black), wind and solar (green) and other clean energy technologies (blue) between 2000 and 2023 in TWh. Source: Ember.

Meeting the tripling goal would mean some 60% of global electricity supplies coming from renewable sources by 2030.

This would mark a dramatic shift from current renewable shares. In 2023, 102 countries had a renewable generation share of 30% or higher, up from 98 in 2022. Yet only 69 countries in 2023 had a share in excess of 50%.

Hitting the tripling target would help put “the world on a pathway aligned with the 1.5C climate goal”, says Ember.

Ember’s director of global insights, Dave Jones says in a statement:

“We already know the key enablers that help countries unleash the full potential of solar and wind. There’s an unprecedented opportunity for countries that choose to be at the forefront of the clean energy future.”

The post Wind and solar are ‘fastest-growing electricity sources in history’ appeared first on Carbon Brief.

Wind and solar are ‘fastest-growing electricity sources in history’

Climate Change

On the Farm, the Hidden Climate Cost of America’s Broken Health Care System

Published

13 hours ago

March 7, 2026

Alice Rush

American farmers are drowning in health insurance costs, while their German counterparts never worry about medical bills. The difference may help determine which country’s small farms are better prepared for a changing climate.

By Jordan Gass-Pooré

Samantha Kemnah looked out the foggy window of her home in New Berlin, New York, at the 150-acre dairy farm she and her husband, Chris, bought last year. This winter, an unprecedented cold front brought snowstorms and ice to the region.

On the Farm, the Hidden Climate Cost of the Broken U.S. Health Care System

Climate Change

A Little-Used Maneuver Could Mean More Drilling and Mining in Southern Utah’s Redrock Country

Published

14 hours ago

March 6, 2026

Alice Rush

Two Utah Congress members have introduced a resolution that could end protections for Grand Staircase-Escalante National Monument. Conservation groups worry similar maneuvers on other federal lands will follow.

By Georgina Gustin

Lawmakers from Utah have commandeered an obscure law to unravel protections for the Grand Staircase-Escalante National Monument, potentially delivering on a Trump administration goal of undoing protections for public conservation lands across the country.

A Little-Used Maneuver Could Mean More Drilling and Mining in Southern Utah’s Redrock Country

Climate Change

Heatwaves driving recent ‘surge’ in compound drought and heat extremes

Published

24 hours ago

March 6, 2026

Alice Rush

Drought and heatwaves occurring together – known as “compound” events – have “surged” across the world since the early 2000s, a new study shows.

Compound drought and heat events (CDHEs) can have devastating effects, creating the ideal conditions for intense wildfires, such as Australia’s “Black Summer” of 2019-20 where bushfires burned 24m hectares and killed 33 people.

The research, published in Science Advances, finds that the increase in CDHEs is predominantly being driven by events that start with a heatwave.

The global area affected by such “heatwave-led” compound events has more than doubled between 1980-2001 and 2002-23, the study says.

The rapid increase in these events over the last 23 years cannot be explained solely by global warming, the authors note.

Since the late 1990s, feedbacks between the land and the atmosphere have become stronger, making heatwaves more likely to trigger drought conditions, they explain.

One of the study authors tells Carbon Brief that societies must pay greater attention to compound events, which can “cause severe impacts on ecosystems, agriculture and society”.

Compound events

CDHEs are extreme weather events where drought and heatwave conditions occur simultaneously – or shortly after each other – in the same region.

These events are often triggered by large-scale weather patterns, such as “blocking” highs, which can produce “prolonged” hot and dry conditions, according to the study.

Prof Sang-Wook Yeh is one of the study authors and a professor at the Ewha Womans University in South Korea. He tells Carbon Brief:

“When heatwaves and droughts occur together, the two hazards reinforce each other through land-atmosphere interactions. This amplifies surface heating and soil moisture deficits, making compound events more intense and damaging than single hazards.”

CDHEs can begin with either a heatwave or a drought.

The sequence of these extremes is important, the study says, as they have different drivers and impacts.

For example, in a CDHE where the heatwave was the precursor, increased direct sunshine causes more moisture loss from soils and plants, leading to a drought.

Conversely, in an event where the drought was the precursor, the lack of soil moisture means that less of the sun’s energy goes into evaporation and more goes into warming the Earth’s surface. This produces favourable conditions for heatwaves.

The study shows that the majority of CDHEs globally start out as a drought.

In recent years, there has been increasing focus on these events due to the devastating impact they have on agriculture, ecosystems and public health.

In Russia in the summer of 2010, a compound drought-heatwave event – and the associated wildfires – caused the death of nearly 55,000 people, the study notes.

Saint Basil's Cathedral, on Red Square, in Moscow, was affected by smog during the fires in Russia in the summer of 2010. — Saint Basil’s Cathedral, on Red Square, in Moscow, was affected by smog during the fires in Russia in the summer of 2010. Credit: ZUMA Press, Inc. / Alamy Stock Photo

The record-breaking Pacific north-west “heat dome” in 2021 triggered extreme drought conditions that caused “significant declines” in wheat yields, as well as in barley, canola and fruit production in British Columbia and Alberta, Canada, says the study.

Increasing events

To assess how CDHEs are changing, the researchers use daily reanalysis data to identify droughts and heatwaves events. (Reanalysis data combines past observations with climate models to create a historical climate record.) Then, using an algorithm, they analyse how these events overlap in both time and space.

The study covers the period from 1980 to 2023 and the world’s land surface, excluding polar regions where CDHEs are rare.

The research finds that the area of land affected by CDHEs has “increased substantially” since the early 2000s.

Heatwave-led events have been the main contributor to this increase, the study says, with their spatial extent rising 110% between 1980-2001 and 2002-23, compared to a 59% increase for drought-led events.

The map below shows the global distribution of CDHEs over 1980-2023. The charts show the percentage of the land surface affected by a heatwave-led CDHE (red) or a drought-led CDHE (yellow) in a given year (left) and relative increase in each CDHE type (right).

The study finds that CDHEs have occurred most frequently in northern South America, the southern US, eastern Europe, central Africa and south Asia.

Charts showing spatial and temporal occurrences over study period — Spatial and temporal occurrence of compound drought and heatwave events over the study period from 1980 to 2023. The map (top) shows CDHEs around the world, with darker colours indicating higher frequency of occurrence. The chart in the bottom left shows how much land surface was affected by a compound event in a given year, where red accounts for heatwave-led events, and yellow, drought-led events. The chart in the bottom right shows the relative increase of each CDHE type in 2002-23 compared with 1980-2001. Source: Kim et al. (2026)

Threshold passed

The authors explain that the increase in heatwave-led CDHEs is related to rising global temperatures, but that this does not tell the whole story.

In the earlier 22-year period of 1980-2001, the study finds that the spatial extent of heatwave-led CDHEs rises by 1.6% per 1C of global temperature rise. For the more-recent period of 2022-23, this increases “nearly eightfold” to 13.1%.

The change suggests that the rapid increase in the heatwave-led CDHEs occurred after the global average temperature “surpasse[d] a certain temperature threshold”, the paper says.

This threshold is an absolute global average temperature of 14.3C, the authors estimate (based on an 11-year average), which the world passed around the year 2000.

Investigating the recent surge in heatwave-leading CDHEs further, the researchers find a “regime shift” in land-atmosphere dynamics “toward a persistently intensified state after the late 1990s”.

In other words, the way that drier soils drive higher surface temperatures, and vice versa, is becoming stronger, resulting in more heatwave-led compound events.

Daily data

The research has some advantages over other previous studies, Yeh says. For instance, the new work uses daily estimations of CDHEs, compared to monthly data used in past research. This is “important for capturing the detailed occurrence” of these events, says Yeh.

He adds that another advantage of their study is that it distinguishes the sequence of droughts and heatwaves, which allows them to “better understand the differences” in the characteristics of CDHEs.

Dr Meryem Tanarhte is a climate scientist at the University Hassan II in Morocco, and Dr Ruth Cerezo Mota is a climatologist and a researcher at the National Autonomous University of Mexico. Both scientists, who were not involved in the study, agree that the daily estimations give a clearer picture of how CDHEs are changing.

Cerezo-Mota adds that another major contribution of the study is its global focus. She tells Carbon Brief that in some regions, such as Mexico and Africa, there is a lack of studies on CDHEs:

“Not because the events do not occur, but perhaps because [these regions] do not have all the data or the expertise to do so.”

However, she notes that the reanalysis data used by the study does have limitations with how it represents rainfall in some parts of the world.

Compound impacts

The study notes that if CDHEs continue to intensify – particularly events where heatwaves are the precursors – they could drive declining crop productivity, increased wildfire frequency and severe public health crises.

These impacts could be “much more rapid and severe as global warming continues”, Yeh tells Carbon Brief.

Tanarhte notes that these events can be forecasted up to 10 days ahead in many regions. Furthermore, she says, the strongest impacts can be prevented “through preparedness and adaptation”, including through “water management for agriculture, heatwave mitigation measures and wildfire mitigation”.

The study recommends reassessing current risk management strategies for these compound events. It also suggests incorporating the sequences of drought and heatwaves into compound event analysis frameworks “to enhance climate risk management”.

Cerezo-Mota says that it is clear that the world needs to be prepared for the increased occurrence of these events. She tells Carbon Brief: