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Health
…efficient heating systems. In a South African programme, energy retrofits led to a 81% reduction in self-reported illness among households. Meanwhile, the evaluation of the Warm Up New Zealand Programme concluded that 90% of all benefits are health-related, with hospital admissions for respiratory conditions dropping by 43%, saving the country over USD 1 billion in health costs. In Ireland, in an analysis of the Warmth and Wellbeing Scheme, participants report that the improved efficiency of their homes reduced the number of doctor visits by 50% and lowered hospital admissions by 40%.In addition to physical health, energy efficiency…
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Jobs
…other energy sectors – such as fossil fuel supply, power generation, or transmission and distribution – across a variety of locations. For instance, in areas with high unemployment rates, energy efficiency accounts for an even higher share of energy sector jobs than in areas with lower unemployment. Meanwhile, other energy sector jobs are more prevalent in areas with lower unemployment rates. Energy efficiency investments also contribute to enhance the quality of jobs in other industries. Firms that invest in energy efficiency can significantly improve the quality of the working environment, with efficient lighting that provides increased visual comfort, or efficient ventilation systems…
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Energy savings
…increased activity, such as home building and increased home sizes. In the transport sector, most efficiency improvements were realised in passenger vehicles – around one-sixth of the total. These energy savings were higher than the increased demand due to the rising number, frequency and distance of people travelling. Efficiency improvements in freight transport, such as trucks, drove around 1% of the total energy savings. This was lower than the rise in freight transport activity over the same period. Need more information? IEA (2025), Energy End-uses and Efficiency Indicators.IEA (2023), Decomposition of change in IEA total final energy use.
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Economic growth
…impact of energy efficiency policies on macroeconomic performance still needs to be better understood and systematically measured, studies have highlighted some economic benefits:Growth in economic activityVarious studies have modelled the impact of select energy efficiency policies on economic activity and found a positive correlation. In Canada, an analysis of the country’s policy package at the time found that every USD 1 spent on energy efficiency programmes would generate between USD 4 and USD 7 in GDP between 2017 and 2030. In the United States, a study funded by the Department of Energy estimated that doubling energy productivity could…
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Germany 2025
…Review was prepared in partnership between the Government of Germany and the IEA. It draws on the IEA's extensive knowledge and the inputs of expert peers from IEA Member countries to assess Germany’s most pressing energy sector challenges and provide recommendations on how to address them, backed by international best practices. The report also highlights areas where Germany’s leadership can serve as an example in promoting secure clean energy transitions. It also promotes the exchange of best practices among countries to foster learning, build consensus and strengthen political will for a sustainable and affordable clean energy future.
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Renewables for Industry
…with increasing deployment of renewable electricity supply, can deliver multiple benefits. In addition to reducing fossil fuel use and associated emissions, it can improve energy security by lowering exposure to volatile gas and oil prices and, when integrated with thermal storage, it can create demand flexibility that helps ensure a higher share of variable renewable generation.This report explores how to expand the role of renewables in the industrial energy mix through electrification of low-temperature heat and steam. It focuses on the European Union, China and the Association of Southeast Asian Nations (ASEAN), examining their techno-economic potential and…
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Global Energy and Climate Model
…publications, including the World Energy Outlook series and Energy Technology Perspectives series.In 2021, the IEA adopted for the first time a new hybrid modelling approach relying on the strengths of both models. The integrated framework of the IEA’s Global Energy and Climate Model (GEC Model) is now the principal tool used to generate detailed sector-by-sector and region-by-region long-term scenarios across IEA publications, including the World Energy Outlook series and Energy Technology Perspectives series.Download the GEC Model Methodology document for an in-depth description of the overall approach and features of the model, and…
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Brazil 2025
…Review was prepared in partnership between the Government of Brazil and the IEA. It draws on the IEA’s extensive knowledge and the inputs of expert peers from IEA Member countries to assess Brazil’s most pressing energy sector challenges and provide recommendations on how to address them, backed by international best practices. The report also highlights areas where Brazil’s leadership can serve as an example in promoting secure and clean energy transitions. It also promotes the exchange of best practices among countries to foster learning, build consensus and strengthen political will for a sustainable and affordable energy future.
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Affordability
…the energy savings of efficiency measures can be initially lower than expected. In India, time-saving appliance ownership, such as of washing machines or refrigerators, is associated with a 15% increase of employment among women and an increased school attendance by older children.As people gain access to electricity, they acquire new equipment, often starting with light bulbs, followed by televisions, and finally fans, particularly in hot locations. As available power increases and electricity becomes more reliable, refrigerators are installed as well. For many products, such as refrigerators, highly efficient models use less than half of the energy of inefficient…
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Lithuania 2025
…was prepared in partnership between the Government of Lithuania and the IEA. It draws on the IEA’s extensive knowledge and the inputs of expert peers from IEA Member countries to assess Lithuania’s most pressing energy sector challenges and provide recommendations on how to address them, backed by international best practices. The report also highlights areas where Lithuania’s leadership can serve as an example in promoting secure and clean energy transitions. It also promotes the exchange of best practices among countries to foster learning, build consensus and strengthen political will for a sustainable and affordable energy future. Translation
