Global Energy Efficiency to slow down in 2023, according to the IEA

By 2023, the global improvement in energy efficiency has fallen sharply, reveals a report by the International Energy Agency (IEA).

Share:

Ralentissement Effacité Énergétique 2023

Comprehensive energy news coverage, updated nonstop

Annual subscription

8.25€/month*

*billed annually at 99€/year for the first year then 149,00€/year ​

Unlimited access • Archives included • Professional invoice

OTHER ACCESS OPTIONS

Monthly subscription

Unlimited access • Archives included

5.2€/month*
then 14.90€ per month thereafter

FREE ACCOUNT

3 articles offered per month

FREE

*Prices are excluding VAT, which may vary depending on your location or professional status

Since 2021: 35,000 articles • 150+ analyses per week

The year 2023 marks a worrying turning point in the global struggle to improve energy efficiency. According to the latest report from the International Energy Agency (IEA), the estimated rate of increase in energy intensity for this year is just 1.3%, compared with 2% in 2022. This underperformance is attributed in part to an increase in energy demand, from 1.3% in 2022 to 1.7% in 2023.

Influence of the Economy on Investment

Inflation and rising interest rates should, according to the IEA, reduce investment growth in energy efficiency to 4% in 2023. This figure contrasts sharply with the average of 20% seen over the previous two years, a period marked by Covid-19’s post-pandemic recovery plans. Nevertheless, investment is expected to reach over $620 billion by 2023, a significant increase on the pre-pandemic period.

Variance from Objectives

The IEA points out that these results fall well short of the targets it set in its roadmap last spring, aimed at doubling growth to 4% a year by 2022. Fatih Birol, Executive Director of the IEA, reiterates the crucial importance of doubling progress in energy efficiency this decade to maintain the goal of limiting global warming to 1.5 degrees Celsius and ensure energy security.

Regional Disparities and Climate Challenges

The report highlights significant regional disparities. The European Union and the United States are set to record robust increases in energy efficiency of between 4% and 14%. These advances can be explained in part by ambitious policies in response to the energy crisis caused by the war in Ukraine and an exceptionally mild winter in Europe. In contrast, record heat in 2023 has led to an explosion in demand for air conditioners and associated emissions in countries such as China.

Despite some regional progress, the overall slowdown in energy efficiency improvements in 2023 underscores the urgency of concerted and reinforced action to achieve global climate goals.

Solar and wind generation exceeded the increase in global electricity demand in the first three quarters of 2025, leading to a stagnation in fossil fuel production according to the latest available data.
The Malaysian government plans to introduce a carbon tax and strengthen regional partnerships to stabilise its industry amid emerging international regulations.
E.ON warns about the new German regulatory framework that could undermine profitability of grid investments from 2029.
A major blackout has disrupted electricity supply across the Dominican Republic, impacting transport, tourism and infrastructure nationwide. Authorities state that recovery is underway despite the widespread impact.
Vietnam is consolidating its regulatory and financial framework to decarbonise its economy, structure a national carbon market, and attract foreign investment in its long-term energy strategy.
The European Bank for Reconstruction and Development strengthens its commitment to renewables in Africa by supporting Infinity Power’s solar and wind expansion beyond Egypt.
Governor Gavin Newsom attended the COP30 summit in Belém to present California as a strategic partner, distancing himself from federal policy and leveraging the state's economic weight.
Chinese authorities authorise increased private sector participation in strategic energy projects, including nuclear, hydropower and transmission networks, in an effort to revitalise slowing domestic investment.
A new regulatory framework comes into effect to structure the planning, procurement and management of electricity transmission infrastructure, aiming to increase grid reliability and attract private investment.
À l’approche de la COP30, l’Union africaine demande une refonte des mécanismes de financement climatique pour garantir des ressources stables et équitables en faveur de l’adaptation des pays les plus vulnérables.
Global energy efficiency progress remains below the commitments made in Dubai, hindered by industrial demand and public policies that lag behind technological innovation.
Global solar and wind additions will hit a new record in 2025, but the lack of ambitious national targets creates uncertainty around achieving a tripling by 2030.
South Korean refiners warn of excessive emissions targets as government considers cuts of up to 60% from 2018 levels.
Ahead of COP30 in Belém, Brazilian President Luiz Inacio Lula da Silva adopts a controversial stance by proposing to finance the energy transition with proceeds from offshore oil exploration near the Amazon.
An international group of researchers now forecasts a Chinese emissions peak by 2028, despite recent signs of decline, increasing uncertainty over the country’s energy transition pace.
The end of subsidies and a dramatic rise in electricity prices in Syria are worsening poverty and fuelling public discontent, as the country begins reconstruction after more than a decade of war.
Current emission trajectories put the planet on course for a 2.3°C to 2.5°C rise, according to the latest UN calculations, just days before the COP30 in Belem.
The Australian government plans to introduce a free solar electricity offer in several regions starting in July 2026, to optimize the management of the electricity grid during peak production periods.
India is implementing new reforms to effectively integrate renewable energy into the national grid, with a focus on storage projects and improved contracting.
China added a record 264 GW of wind and solar capacity in the first half of 2025, but the introduction of a new competitive pricing mechanism for future projects may put pressure on prices and affect developer profitability.

All the latest energy news, all the time

Annual subscription

8.25€/month*

*billed annually at 99€/year for the first year then 149,00€/year ​

Unlimited access - Archives included - Pro invoice

Monthly subscription

Unlimited access • Archives included

5.2€/month*
then 14.90€ per month thereafter

*Prices shown are exclusive of VAT, which may vary according to your location or professional status.

Since 2021: 30,000 articles - +150 analyses/week.