-
Rail
Country and regional highlights
Europe targets modernisation of the rail network and India rapid electrification, while China is expanding its network with a focus on high-speed rail
CO2 emissions
Rail is the least emissions-intensive mode of passenger transport – its expansion will help reduce overall emissions
Energy
Expansion of electric trains continues rapidly in the NZE Scenario, particularly to replace diesel-powered freight trains
Activity
Innovation
Policy
Acknowledgements
-
Demand Response
Country and regional highlights
Notable progress to advance demand response is being made
Activity
Demand response markets are expanding, but greater effort is needed to align with the Net Zero Scenario
Technology deployment
Enabling technologies offer high flexibility potential, although deployment is still lagging
Innovation
Innovative solutions and approaches are being tested to expand residential participation in demand response
Policy
International collaboration
Acknowledgements
-
Behavioural Changes
Country and regional highlights
Governments have supported or mandated behavioural changes in buildings and on roads
CO2 emissions
Behavioural changes can quickly reduce CO2 emissions
Activity
Growth in activity is inevitable as economies develop and populations increase, but behavioural changes can help to offset these increases
Policy
Russia’s invasion of Ukraine and the resulting energy crisis have increased the salience of behavioural changes
-
Paper
Country and regional highlights
There is growing ambition on electrifying heat in the European paper industry
CO2 emissions
Emissions intensity has seen a decade of reductions, but further effort is needed going forward
Energy
Further energy efficiency improvements and fuel switching are needed to get on track with the Net Zero Scenario
Activity
Technology deployment
The adoption of high-temperature heat pumps combined with an increased use of low-emission fuels can reduce emissions
-
Digitalisation
Country and regional highlights
Countries are increasingly preparing their infrastructure for digitalisation
Energy
Digital technologies can help increase energy efficiency and reduce emissions across the energy system
CO2 emissions
Digital technologies are directly responsible for around 2% of energy-related GHG emissions today
Technology deployment
Deployment of smart meters and connected devices continues to grow
Investment
Investment in digital grid technologies accelerated in 2022
Policy
-
Hydroelectricity
Hydropower is the largest source of renewable energy today, but that could change soon
Hydro is currently the third largest source of power generation worldwide after coal and natural gas. In 2024, it generated around 4 500 terawatt-hours of electricity, or 14% of the global total.
More than 150 gigawatts (GW) of new hydro capacity is set to come online by the end of the decade, mostly in emerging and developing economies. As a result, electricity generation from hydropower is expected to increase by 7% between 2025 and 2030. However, its share in global electricity generation is poised to…
-
Chemicals
Country and regional highlights
Important steps to deploy low-emissions chemicals production technologies are being taken in several regions
CO2 emissions
CO2 emissions must decouple from production by 2030 to get on track with the NZE Scenario
Energy
Energy consumption for feedstock will continue to rise with production, but process energy intensity declines rapidly in the NZE Scenario
Activity
Primary chemical production is set to keep growing in the NZE Scenario
Innovation
Supporting infrastructure
-
Grid-scale Storage
Country and regional highlights
Major markets target greater deployment of storage additions through new funding and strengthened recommendations
Technology deployment
Pumped-storage hydropower is still the most widely deployed storage technology, but grid-scale batteries are catching up
Innovation
While innovation on lithium-ion batteries continues, further cost reductions depend on critical mineral prices
Policy
Investment
-
Space Cooling
Country and regional highlights
Updated energy efficiency standards and new policies target emissions associated with space cooling
CO2 emissions
Progress on efficiency and power decarbonisation have not been sufficient to curb emissions growth from rising space cooling demand
Energy
In 2022 energy consumption for space cooling further increased by more than 5% from 2021
Activity
More than half of floor area additions to 2030 will occur in areas of the world with a high need for space cooling
Policy
-
Electrolysers
Country and regional highlights
Progress is spread across different continents, from China, which leads on installed capacity, to the European Union, which have adopted important policies, and other regions like India and the Middle East moving forward with a small number of large-scale projects
Technology deployment
Global installed electrolyser capacity reached 1.4 GW at the end of 2023, almost double the one at the end of 2022
Technology manufacturing
Innovation
Policy
Investment