Energy intensity
The amount of energy an economy uses per unit of GDP. Countries with low energy intensity extract more economic value per litre of fuel burned — making them less sensitive to fuel price shocks and more resilient to oil market volatility.
How energy intensity is measured
The standard measure is total primary energy supply (TPES) per unit of GDP, where GDP is expressed in purchasing power parity (PPP) terms to allow fair country comparisons. The IEA World Energy Balances and the World Bank Sustainable Energy for All (SE4All) database both publish energy intensity time series for 180+ countries.
The most common unit is megajoules (MJ) per USD of GDP (PPP). In 2022, the global average was approximately 4.5 MJ per PPP USD. The range between the most and least energy-intensive economies is roughly tenfold:
| Country / group | Energy intensity (MJ / USD PPP, 2022) | Characterisation |
|---|---|---|
| Ireland | ~2.0 | Very low — services, mild climate |
| UK | ~2.5 | Low — services, North Sea gas efficiency |
| Germany | ~3.2 | Moderate — industrial but efficient |
| United States | ~3.5 | Moderate — large transport, cooling load |
| China | ~5.5 | High — heavy industry transitioning down |
| Russia | ~8.5 | High — cold climate, energy-intensive industry |
| Trinidad & Tobago | ~18 | Very high — petrochemical-intensive |
The SDG7 Tracking Portal (World Bank / IEA / IRENA) tracks progress toward the global target of doubling the rate of energy intensity improvement by 2030, as embedded in Sustainable Development Goal 7.3.
Country comparisons
Energy intensity varies for structural, climatic, and developmental reasons that are important to understand before making policy judgements:
- Service vs industrial economies: A country dominated by financial services, software, or tourism uses far less energy per dollar of GDP than one dominated by steel, cement, or aluminium production. Ireland's very low energy intensity partly reflects its large financial services and pharmaceutical sectors (which are high-value but low-energy).
- Climate: Cold countries use more energy for space heating; hot countries for cooling. Canada's energy intensity is elevated partly by climate. Singapore's is lower than its level of development would predict because the climate is warm and there are no heating requirements.
- Energy price history: Countries that have historically faced high energy prices (Denmark, Germany, Japan) have invested more heavily in efficiency over decades. Countries with subsidised energy (Gulf states, Russia) had less incentive to improve efficiency and tend to have higher intensity.
- Infrastructure vintage: Countries with newer building stock, vehicle fleets, and industrial equipment tend to be more efficient. The legacy of Soviet-era infrastructure explains much of Russia and Central Asia's high energy intensity.
For consumer-level fuel prices by country, use the FuelTheGuide Explorer. For the subsidy context behind high-intensity, low-price countries, see our fuel subsidy and Middle East fuel prices entries.
What drives energy intensity
Energy intensity can change through three mechanisms:
1. Structural change: As economies develop, they typically shift from agriculture and heavy industry toward manufacturing and then services. Each transition reduces energy intensity. China's rapid intensity improvement from 2005 onward reflects this transition, though China's industrial base remains large.
2. Technology and efficiency: Better engines, better insulation, LED lighting, and efficient industrial processes reduce energy per unit of output. The IEA Tracking Clean Energy Progress reports track efficiency improvement rates across sectors. Vehicle fuel economy is the transport-specific efficiency measure most relevant to this site — see our guide to petrol vs diesel running costs for the vehicle efficiency side.
3. Price signals: Higher energy prices reduce demand and incentivise efficiency investment. Countries with sustained high fuel prices (through excise duty or market pricing) see faster efficiency improvement over time. See our excise duty and carbon tax entries for how government price policy shapes this signal.
Energy intensity and fuel price sensitivity
From a consumer and policy perspective, energy intensity determines how large a hit a fuel price shock delivers to the economy. A country where transport fuel represents 15 % of household spending (high-intensity, low-income) faces a more severe shock from a 20 % petrol price rise than one where fuel represents 4 % of spending (low-intensity, high-income).
The IMF World Economic Outlooks include analysis of oil price pass-through to inflation and growth by country income group, and consistently find that low-income, energy-intensive economies experience larger macroeconomic effects from commodity price shocks. This is one reason why fuel subsidies tend to be most politically entrenched in lower-middle-income countries with high energy intensity — the social cost of removing them falls disproportionately on the poor.
For the subsidy reform dimension, see our fuel subsidy entry and articles on Asia subsidy reform and Latin America petrol prices.
Global trends and targets
Global energy intensity has improved by approximately 2 % per year over the past decade — broadly in line with the SDG7.3 target. However, the SDG7 progress report 2024 found improvement rates slowing in 2021–2022 due to post-COVID economic recovery patterns favouring energy-intensive sectors (travel, freight, construction) over services.
The IEA's Net Zero by 2050 scenario requires energy intensity improvement to accelerate to 4 % per year through 2030 — double the recent average. This is considered technically feasible but requires rapid deployment of heat pumps, EV fleets, and building retrofits at a pace not currently observed. The IRENA World Energy Transitions Outlook 2023 identifies transport electrification as the single largest near-term opportunity for intensity improvement in most countries.
For the fuel demand impact of transport electrification, see our articles on EV charging costs vs petrol, India CNG vehicles, and China's fuel demand trajectory.
Frequently asked questions
What is energy intensity?
Energy intensity is the amount of primary energy consumed per unit of GDP, expressed as megajoules per USD 1,000 of GDP (PPP). Lower energy intensity means more economic value per unit of energy — reflecting efficient industry, a services-oriented economy, or favourable climate.
Which countries have the lowest energy intensity?
Service-oriented economies with efficient building stock and mild climates — Ireland, the UK, Switzerland, Denmark — consistently rank among the lowest. Russia, Central Asian states, and petrochemical-intensive Caribbean countries have the highest intensity.
How does energy intensity relate to fuel prices?
High-intensity countries are more exposed to fuel price shocks: the same percentage price rise hits a larger share of economic output and household budgets. Low-intensity economies absorb price shocks more easily, which is why high-intensity, low-income countries tend to maintain fuel subsidies longer.
What is the difference between energy intensity and energy efficiency?
Energy efficiency measures how much useful work a technology extracts per unit of energy (e.g., km per litre). Energy intensity is macroeconomic: total energy use divided by total GDP. An economy can improve intensity by shifting toward less energy-intensive industries without changing technology at all.