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
Record CO2 levels and emission gaps affect global climate stability
3rd November 2026
The United Nation’s (UN) weather agency warned that because CO2 persists in the atmosphere for many years, this accumulation locks in long-term global...
Linux Foundation launches open-source software project to overcome global power grid upgrade bottlenecks
27th October 2026
It aims to build a neutral, flexible foundation that lets planners connect commercial and open-source software, targeting faster worldwide energy proj...
France launches new biogas support mechanisms
20th October 2026
The new law relates to biogas production certificates (BPCs) and establishes six obligation periods, the first from 2026 to 2029 and subsequent ones i...
Battery storage undercuts gas as energy transition reshapes global power markets
20th October 2026
Four-hour battery storage is now cheaper than open-cycle gas in all 43 markets modelled, according to Wood Mackenzie’s latest global levelised cost of...
Premier Energies launches India’s largest solar cell plant
6th October 2026
Premier Energies has begun trial production at its N-type TOPCon G12R solar cell manufacturing facility in Naidupeta. The company said the 101-acre fa...
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...