Since 2020 annual energy investment has increased by 45%
Energy efficiency, which measures useful output per unit of energy input, plays a crucial role in energy management by reducing costs and lowering greenhouse gas emissions. Efficiency improvements can be made across the energy system, from generation to home appliances and transport vehicles, and are often the most cost-effective way to enhance energy security and system reliability.
Energy management is essential for businesses, focusing on assessing energy use and implementing efficiency programmes. Innovative technologies in heating, lighting, insulation, small-scale power generation, and smart flexibility present numerous opportunities for better energy use. Energy managers, sustainability consultants, and facilities managers drive these advancements, ensuring compliance with increasing legal energy and carbon reporting requirements. They tackle challenges by leveraging supply, efficiency, generation, demand management, and behaviour change, aiming for a global low carbon, efficient energy system.
0.0
new or updated government policies related to energy efficiency implemented in 2025 (IEA)
0.0
million energy efficiency measures installed through government support schemes in 2.8 million properties from 2013-2024 (DESNEZ)
$0
billion global energy efficiency related investment expected in 2025 (IEA)
Nearly0
million people are employed in jobs relating to energy efficiency (IEA)
New Energy World stories
Scientific advances raise solar cell efficiency over 30%
29th September 2026
A team from the School of Modern Engineering and Applied Sciences, Nanjing University, China, has raised the efficiency of tandem all-perovskite tripl...
European Union and UNECE move to regulate data centre expansion
29th September 2026
The scheme is said to be specifically designed to address increasing power demand from artificial intelligence (AI) models and cloud computing infrast...
Rising global energy demand puts toughest climate targets further out of reach
29th September 2026
The report finds energy demand in emerging and developing economies (EMDEs) could rise by more than 60% by 2060, adding the equivalent of another Chin...
Industry coalition targets hydrogen truck rollout across Europe
22nd September 2026
Volvo Group, Daimler Truck, Toyota Motor Corporation, Bosch, Air Liquide, TotalEnergies, Teal Mobility and MB Energy announced the initiative at the I...
UK and European airport expansions could breach carbon limits
22nd September 2026
And in the UK, the independent, publicly funded Climate Change Committee (CCC) has advised government that no credible pathway exists within national ...
Technical guidance publications
EI 3499
Research report: Application of life cycle assessment methodology to the understanding of the energy balance and efficiency of hydrogen derivative value chain building blocks
July 2026
This research report builds on the Energy Institute’s earlier publication, Research report: Application of life cycle assessment methodology to the un...
EI 3641
Effects of carbon capture and storage plant on thermal power station operation
July 2026
This report explores the operational, economic and environmental implications of integrating carbon capture and storage (CCS) technologies into therma...
EI 3604
Embedding circularity across the life cycle of assets
July 2026
EI 3604 Embedding circularity across the lifecycle of assets helps companies integrate circular economy principles into every stage of an asset’s life...
EI 3639
Research report on replacement of SF6 switchgear with SF6-free switchgear
June 2026
This research report provides an overview of the current landscape of SF6‑free switchgear technologies, including their technical performance, market ...
EI 3328
Guidance on the preservation and recommissioning of existing combined cycle gas turbine (CCGT) plant
May 2026
First-generation combined cycle gas turbine (CCGT) plants, introduced in the early 1990s, have increasingly been displaced by higher-efficiency plants...