World Energy Efficiency Day shines a light on how much we need to get smarter about how we use energy, as demand keeps climbing, finding ways to use it more efficiently cuts both emissions and costs faster. The International Energy Agency points out that we’re still not making progress fast enough to hit climate goals, so, on this day, everyone, from governments to businesses to regular people, gets a reminder to step up, save more energy, and push toward a cleaner future.
Why Is Energy Efficiency Considered the “First Fuel” in the Energy Transition?
In 2025, it was expected that the world would improve its energy intensity, which is considered the key performance metric for energy efficiency, by 1.8%, whereas in 2024 it improved by 1%. This is still lower than the 4% per annum improvement target agreed upon by nearly 200 countries at COP28.
Key areas where energy efficiency can make a major impact:
- Buildings and infrastructure: Buildings consume a major amount of energy, and improving buildings can play a major role in improving energy efficiency.
- Industrial efficiency: Industry consumes 37% of the world’s final energy, so improving industrial efficiency is important to reduce energy consumption.
- Efficient cooling and appliances: Air conditioning alone accounts for 10% of global electricity consumption.
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How Is the World Progressing Toward Global Energy Efficiency Targets?
Globally, progress towards achieving international energy-efficient targets has been slow, despite an increase in awareness. Worldwide improvements in energy efficiency have averaged approximately 1.3% each year since 2019, a far lower rate than that necessary to achieve climate change objectives.
Increasingly high energy demand continues due to increasing population and economic growth; global total energy supply reached approximately 628.6 exajoules in 2023, an increase of 1.9% from 2022 (according to estimates of global energy statistics).
Emerging economies continue to experience much greater increases in energy efficiency than in prior years, greatly influencing the amount of new energy efficiency for global use, including India and China.
| Indicator | Data / Statistics | Source Insight |
|---|---|---|
| Origin of the day | 1998 International Energy Efficiency Meeting, Austria | Established to raise global awareness |
| Global energy intensity improvement (2025) | 1.8% improvement | Still below the 4% annual target set at COP28 |
| Global energy supply (2023) | 628.6 exajoules | About 1.9% increase from 2022 |
| Industry share of global energy use | Around 37% of final energy consumption | Major sector for efficiency improvements |
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What Actions Are Needed to Accelerate Energy Savings Globally?
Experts are of the opinion that more policies, innovation in technology, and behavioral changes are needed to increase the pace of energy efficiency improvement in the world. Governments should focus on strengthening building codes, promoting efficient appliances, smart energy systems, and encouraging clean technologies.
In the face of projected increases in world energy consumption, the most realistic solution to the problem is to increase the pace of improvement in energy efficiency. As the world marks the observance of World Energy Efficiency Day, the call to action for 2026 is clear: faster action is the key to a cleaner, more resilient world energy system.
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