Carbon dioxide (CO2) emissions from the global power sector grew just 0.2% in the first six months of 2023, with rapidly rising wind and solar outpacing sluggish demand growth.
Emissions from electricity generation would have fallen, but droughts forced countries to increase fossil fuel use to cover declines in hydropower.
The findings come from a new report by thinktank Ember, covering 78 countries and 92% of global electricity demand in the first half of 2023.
The report shows that global electricity demand growth and the expansion of low-carbon supplies remain delicately balanced, with ongoing droughts putting a question mark over Ember’s earlier prediction of a decline in fossil-fueled power in 2023.
While expanded wind and solar capacity met a record 14.3% of global electricity demand in the first half of this year, up from 12.8% a year earlier, hydro generation fell by 8.5%.
With a small rise in fossil-fueled power helping to make up for the drop from hydro, emissions from the sector plateaued rather than declining, despite weak electricity demand growth.
The expansion of low-carbon electricity supplies overall remains insufficient to put the world on track for limiting warming to 1.5C, according to Ember’s report.
Solar topples records
Global wind and solar generation continued to increase across the first six months of 2023, according to Ember.
The amount of electricity generated by solar and wind rose to 1,930 terawatt hours (TWh), up 12% from 1,717TWh during the first half of 2022. This accounted for 14.3% of global electricity generation overall, of which 5.5% came from solar and 8.8% came from wind.
In percentage terms, both sources grew more slowly than in the same period last year. For example, wind output grew 10% in the first half of 2023 compared to 16% in the same period last year. Solar grew 16%, compared to 26% in the first half of 2022.
Such levels of growth are below what is needed to limit warming to 1.5C under the International Energy Agency’s (IEA) net-zero emissions by 2050 scenario, which requires a yearly average growth of 17% for wind and 24% for solar up to 2050, Ember notes.
Similarly, in absolute terms, the growth in wind and solar generation was below the levels seen in 2022. Solar grew by 104TWh, down from 132TWh in the same period last year. Wind increased by 109TWh, compared to 147TWh in the same period last year.
Some 50 countries set new monthly records for solar generation in the first half of 2023, Ember says. This includes 24 of the EU’s 27 members seeing new solar highs as of June.
China, meanwhile, generated 50TWh (6.4% of its electricity) from solar in June 2023, up by 9.7TWh (+25%) on the previous June. This means China’s solar generation in one month would be enough to power New Zealand, Qatar or Hungary for a whole year.
Records were also broken in the US, Mexico, Brazil and Chile, among many others in the Americas, Ember says. As shown in the below chart, where the light green line shows solar trending above 2022 generation levels (dark green line) across a range of countries worldwide.
Having peaked in 2020, wind capacity additions have trended downwards over the past few years, according to Ember. In 2020, 111 gigawatts (GW) of capacity were installed worldwide, in 2021 it was 92GW and in 2022 it was 73GW.
Wind generation growth has similarly slowed, with the largest increase in history (+268TWh) in 2021. This then decreased to +251TWh in 2022, and 109TWh in the first half of 2023.
As with solar, China is surging ahead on wind, being responsible for 91% of global growth in generation in the first half of this year, according to Ember.
China saw a 26% growth in wind generation in the first half of 2023 compared to the same period in 2022. In contrast, wind generation in the EU grew by just 4.8% and in Japan by 2.4%, from an already low baseline, the report notes.
Together, wind and solar generation increased by 213TWh in the first six months of 2023. This increase was much larger than the growth in global electricity demand of 59TWh. However, with hydro output falling dramatically due to drought (see below), there was still a small increase in fossil fuel use and emissions..
Without the increase from wind and solar, global power sector emissions would have risen by 154m tonnes of CO2 (MtCO2, 2.6%), instead of the 12MtCO2 (0.2%) actually seen, according to Ember.
Hydropower drops by record amount
In the first six months of 2023, global hydropower generation fell by 8.5% (-177TWh), according to Ember. Hydro generated 1,898TWh of electricity, some 14% of the global total in the first half of the year, in comparison with 2,074TWh (15%) in the same period of 2022.
The decrease in hydropower generation was caused by droughts, which Ember says were likely exacerbated by climate change. The fall in the six months to June (dark blue) was larger than any decline recorded across a full year in the last two decades, as shown in the chart below.
This was most notable in China, which accounted for around three-quarters of the fall.
China is home to nearly a third of the world’s hydropower generation (30% in 2022).
This year, the country’s hydropower sector was hit by summer droughts for the third consecutive year, as reported by Carbon Brief’s China Briefing.
In July, China’s National Bureau of Statistics announced that hydropower output fell by nearly 23% in the first half of 2023 – the largest drop among all electricity sources.
Similarly, the Centre for Research on Energy and Clean Air recorded a “collapse” in output in the month of June, down 34% year-on-year. It attributed this to “drought and pressure to save water for generation during peak demand season in July–August”.
Ember’s analysis found that China’s hydropower “capacity factor” fell to 30.5% in the first six half of 2023, ten percentage points below the first half of 2022 and the lowest value since at least 2015.
Beyond China, the global capacity factor for hydropower generation fell to 35.6%, nearly four percentage points lower than in the first half of 2022. Across the last decade, the average global hydropower capacity factor was 40.9%, notes Ember.
According to the IEA’s electricity market report, the capacity factor of global hydropower has been a declining trend over the last decade. It has fallen from an average of 38% in 1990-2016, to about 36% in 2020-2022.
This 2% difference means installed hydropower is producing about 240TWh less electricity than it would have produced had the capacity factor stayed the same as it was a decade ago, the IEA report notes.
It adds:
“As a result, an amount of energy as large as Spain’s annual electricity consumption needs to be produced by other dispatchable sources of power, which is currently supplied mainly by fossil-fired generation.”
Currently, 2023 is likely to set a record for the lowest global hydropower capacity factor in recorded history, if conditions fail to substantially improve, Ember adds.
Fossil fuel generation increased to meet the shortfall created by low hydropower rates. If hydropower generation had matched its rate in 2022, power sector emissions would have fallen by 2.9%, Ember says.
Ember suggests that the way hydropower capacity has been hit in the first six months of 2023 is a “warning shot” about how the technology could negatively affect the speed of the electricity transition, given its susceptibility to climate change.
In a statement, Malgorzata Wiatros-Motyka, senior electricity analyst at Ember, says:
“It’s still hanging in the balance if 2023 will see a fall in power sector emissions. While it is encouraging to see the remarkable growth of wind and solar energy, we can’t ignore the stark reality of adverse hydro conditions intensified by climate change. The world is teetering at the peak of power sector emissions, and we now need to unleash the momentum for a rapid decline in fossil fuels by securing a global agreement to triple renewables capacity this decade.”
The Intergovernmental Panel on Climate Change (IPCC) sixth assessment report states that by 2080, climate conditions could affect hydropower generation by between +5% and -5%, under a high emissions scenario. However, it said the expected impact varies significantly depending on the region.
Demand drops in major economies
Across the first six months of 2023, global demand for electricity grew by just 0.4%, according to Ember.
This is much lower than the average annual growth rate between 2012 and 2022, which sat at 2.6%.
Major economies saw falls in demand, including Japan (-5.6%), the EU (-4.6%), the US (-3.4%) and South Korea (-1.4%), leading to a decline in their fossil fuel use for electricity.
This fall in demand in high income economies was due to a number of reasons, according to Ember. In the EU, for example, this continued a trend that began in March 2022, when Russia invaded Ukraine.
Policy measures designed to reduce demand amid the wider energy crisis and concerns over the security of gas, falling output from energy intensive industries, mild winter weather, and reduced personal use due to the cost of living crisis, all contributed.
Mild weather and slower economic activity also drove electricity demand reductions in the US and Japan, Ember says.
Meanwhile, India saw lower-than-expected demand growth in the first six months of 2023, according to the report, rising 3.1% compared to 10.7% in the same period last year. This was lower than the average growth seen from 2012-22 (5.4%).
In China, electricity demand increased by 6%, which is in line with the China Electricity Council’s national estimates, Ember notes, and the historic average for 2012-22 (+5.9%). This reflects China’s rebound from Covid lockdowns in 2022 as well as heatwaves during May and June.
Demand growth is unlikely to continue at such a slow level globally in the future, especially in mature economies that are looking to electrify key sectors such as transport and heating to decarbonise, the report notes.
Electricity demand is set to continue increasing in rapidly-growing economies, including China and India, as they continue to advance their economies and boost electricity access.
Emissions plateau
Thanks to the increase in solar and wind power generation – and despite the drop in hydro output – global power sector emissions plateaued over the first half of 2023, according to Ember. It says the increase from wind and solar avoided 142MtCO2 of emissions.
Globally, the power sector emitted 5,795MtCO2 in the six months of 2023, up just 12MtCO2 (0.2%) from the same period in 2022. This continued a downwards trend that had been seen in the power sector prior to 2021, as seen in the chart below.
Falls in power-sector emissions were seen in the EU (-17%), Japan (-12%), US (-8.6%) and South Korea (-3%), largely as a result of falls in coal generation.
Emissions growth slowed in India, Ember says, where there was a 3.7% increase in the first half of 2023, down from 9.7% a year earlier.
However, Ember’s report notes that current progress falls short of what would be needed to keep warming below 1.5C, stating:
“Power-sector emissions need to be falling fast this decade, not just plateauing. Moreover, having falling emissions when demand is exceptionally low is not enough; emissions must be falling even when global demand is increasing as the world consumes more electricity and moves towards electrifying the entire economy.”
In economies where emissions rose, this was due to an increase in fossil fuel generation.
Globally, fossil-fueled power reached 8,100TWh in the first half of 2023, accounting for 59.9% of global generation overall. This was an increase of 9TWh (0.1%) from a year earlier..
Coal generation increased by 1% (47TWh) and gas generation by 0.5% (14TWh), however other fossil fuel (mainly oil) generation fell 15% (-52TWh).
The changes varied significantly at regional and country level. For example, in China, coal generation increased by 203TWh (8%) in the first half of 2023. This was largely due to the hydropower deficit (129TWh) and contributed to China’s emissions for its power sector rising by 7.9% (173MtCO2).
Without the need to meet the hydropower deficit, China’s coal generation would only have risen by 74TWh (2.9%), according to Ember. This would have been enough to turn the observed 47TWh rise in global coal generation into a fall of 82TWh.
Meanwhile, in the EU, fossil generation fell to its lowest since at least 2000 in the first half of 2023, at 410TWh.
The fall was Europe-wide, with 11 countries seeing a decline of at least 20% and five a decline of more than 30% (Portugal, Austria, Bulgaria, Estonia and Finland), as detailed in an earlier report from Ember, covered by Carbon Brief.
Coal generation in the bloc fell 23% (-49TWh), in contrast to the global rise of 1%.
The post World’s electricity supply close to ‘peak emissions’ due to growth of wind and solar appeared first on Carbon Brief.
World’s electricity supply close to ‘peak emissions’ due to growth of wind and solar
The governor’s office said the city’s two main reservoirs could dry up by May, much sooner than previous timelines. But authorities still offer no plan for curtailment of water use.
City officials in Corpus Christi on Tuesday released modeling that showed emergency cuts to water demand could be required as soon as May as reservoir levels continue to decline.
Corpus Christi Cuts Timeline to Disaster as Abbott Issues Emergency Orders
Lena Luig is the head of the International Agricultural Policy Division at the Heinrich Böll Foundation, a member of the Global Alliance for the Future of Food. Anna Lappé is the Executive Director of the Global Alliance for the Future of Food.
As toxic clouds loom over Tehran and Beirut from the US and Israel’s bombardment of oil depots and civilian infrastructure in the region’s ongoing war, the world is once again witnessing the not-so-subtle connections between conflict, hunger, food insecurity and the vulnerability of global food systems dependent on fossil fuels, dominated by a few powerful countries and corporations.
The conflict in Iran is having a huge impact on the world’s fertilizer supply. The Strait of Hormuz is a critical trade route in the region for nearly half of the global supply of urea, the main synthetic fertilizer derived from natural gas through the conversion of ammonia.
With the Strait impacted by Iran’s blockades, prices of urea have shot up by 35% since the war started, just as planting season starts in many parts of the world, putting millions of farmers and consumers at risk of increasing production costs and food price spikes, resulting in food insecurity, particularly for low-income households. The World Food Programme has projected that an extra 45 million people would be pushed into acute hunger because of rises in food, oil and shipping costs, if the war continues until June.
Pesticides and synthetic fertilizer leave system fragile
On the face of it, this looks like a supply chain issue, but at the core of this crisis lies a truth about many of our food systems around the world: the instability and injustice in the very design of systems so reliant on these fossil fuel inputs for our food.
At the Global Alliance, a strategic alliance of philanthropic foundations working to transform food systems, we have been documenting the fossil fuel-food nexus, raising alarm about the fragility of a system propped up by fossil fuels, with 15% of annual fossil fuel use going into food systems, in part because of high-cost, fossil fuel-based inputs like pesticides and synthetic fertilizer. The Heinrich Böll Foundation has also been flagging this threat consistently, most recently in the Pesticide Atlas and Soil Atlas compendia.
We’ve seen this before: Russia’s invasion of Ukraine in 2022 sparked global disruptions in fertilizer supply and food price volatility. As the conflict worsened, fertilizer prices spiked – as much from input companies capitalizing on the crisis for speculation as from real cost increases from production and transport – triggering a food price crisis around the world.
-
‘Completely delusional’: UN climate chief warns against fossil fuel push after Iran crisis
As Gulf disruptions send oil and gas prices soaring, Simon Stiell urges leaders to double down on renewables and fight fossil fuel dependency -
Gulf oil and gas crisis sparks calls for renewables investment
Energy analysts and some politicians say the Iran war’s effect on oil and gas prices shows renewables are the path to energy security
Since then, fertilizer industry profit margins have continued to soar. In 2022, the largest nine fertilizer producers increased their profit margins by more than 35% compared to the year before—when fertilizer prices were already high. As Lena Bassermann and Dr. Gideon Tups underscore in the Heinrich Böll Foundation’s Soil Atlas, the global dependencies of nitrogen fertilizer impacted economies around the world, especially state budgets in already indebted and import-dependent economies, as well as farmers across Africa.
Learning lessons from the war in Ukraine, many countries invested heavily in renewable energy and/or increased domestic oil production as a way to decrease dependency on foreign fossil fuels. But few took the same approach to reimagining domestic food systems and their food sovereignty.
Agroecology as an alternative
There is another way. Governments can adopt policy frameworks to encourage reductions in synthetic fertilizer and pesticide use, especially in regions that currently massively overuse nitrogen fertilizer. At the African Union fertilizer and Soil Health Summit in 2024, African leaders at least agreed that organic fertilizers should be subsidized as well, not only mineral fertilizers, but we can go farther in actively promoting agricultural pathways that reduce fossil fuel dependency.
In 2024, the Global Alliance organized dozens of philanthropies to call for a tenfold increase in investments to help farmers transition from fossil fuel dependency towards agroecological approaches that prioritize livelihoods, health, climate, and biodiversity.
In our research, we detail the huge opportunity to repurpose harmful subsidies currently supporting inputs like synthetic fertilizer and pesticides towards locally-sourced bio-inputs and biofertilizer production. We know this works: There are powerful stories of hope and change from those who have made this transition, despite only receiving a fraction of the financing that industrial agriculture receives, with evidence of benefits from stable incomes and livelihoods to better health and climate outcomes.
New summit in Colombia seeks to revive stalled UN talks on fossil fuel transition
Inspiring examples abound: G-BIACK in Kenya is training farmers how to produce their own high-quality compost; start-ups like the Evola Company in Cambodia are producing both nutrient-rich organic fertilizer and protein-rich animal feed with black soldier fly farming; Sabon Sake in Ghana is enriching sugarcane bagasse – usually organic waste – with microbial agents and earthworms to turn it into a rich vermicompost.
These efforts, grounded in ecosystems and tapping nature for soil fertility and to manage pest pressures, are just some of the countless examples around the world, tapping the skill and knowledge of millions of farmers. On a national and global policy level, the Agroecology Coalition, with 480+ members, including governments, civil society organizations, academic institutions, and philanthropic foundations, is supporting a transition toward agroecology, working with natural systems to produce abundant food, boost biodiversity, and foster community well-being.
Fertilizer industry spins “clean” products
We must also inoculate ourselves from the fertilizer industry’s public relations spin, which includes promoting the promise that their products can be produced without heavy reliance on fossil fuels. Despite experts debunking the viability of what the industry has dubbed “green hydrogen” or “green or clean ammonia”, the sector still promotes this narrative, arguing that these are produced with resource-intensive renewable energy or Carbon Capture and Storage (CCS), a costly and unreliable technology for reducing emissions.
As we mourn this conflict’s senseless destruction and death, including hundreds of children, we also recognize that peace cannot mean a return to business-as-usual. We need to upend the systems that allow the richest and most powerful to have dominion over so much.
This includes fighting for a food system that is based on genuine sovereignty and justice, free from dependency on fossil fuels, one that honors natural systems and puts power into the hands of communities and food producers themselves.
The post Middle East war is another wake-up call for fossil fuel-reliant food systems appeared first on Climate Home News.
Middle East war is another wake-up call for fossil fuel-reliant food systems
Parts of the Southern and Northeastern U.S. faced tornado threats this week. Scientists are trying to parse out the climate links in changing tornado activity.
It’s been a weird few weeks for weather across the United States.
-
Greenhouse Gases7 months ago
Guest post: Why China is still building new coal – and when it might stop
-
Climate Change7 months ago
Guest post: Why China is still building new coal – and when it might stop
-
Greenhouse Gases2 years ago嘉宾来稿：满足中国增长的用电需求 光伏加储能“比新建煤电更实惠”
-
Climate Change2 years ago
Bill Discounting Climate Change in Florida’s Energy Policy Awaits DeSantis’ Approval
-
Climate Change2 years ago嘉宾来稿：满足中国增长的用电需求 光伏加储能“比新建煤电更实惠”
-
Climate Change Videos2 years ago
The toxic gas flares fuelling Nigeria’s climate change – BBC News
-
Carbon Footprint2 years agoUS SEC’s Climate Disclosure Rules Spur Renewed Interest in Carbon Credits
-
Renewable Energy2 years ago
GAF Energy Completes Construction of Second Manufacturing Facility