What is the energy transition?

The energy transition is the structural shift in the global energy system from fossil fuels (coal, oil, natural gas) to low-carbon and zero-carbon energy sources (solar, wind, nuclear, hydropower) and carriers (electricity, green hydrogen). It encompasses changes in electricity generation, transport (EV adoption), heating (heat pumps), and industrial processes. The transition is driven by climate policy, falling renewable costs, energy security concerns, and technological change. The pace and pathway vary significantly by country and sector.

When will the energy transition be complete?

There is no single completion date — the energy transition is a decades-long process with different timelines by sector and country. The IEA's Net Zero Emissions (NZE) scenario requires global electricity to be nearly fully decarbonised by 2040 and total energy to reach net-zero emissions by 2050. OPEC and most mainstream oil industry forecasts project oil demand peaking in the late 2020s to mid-2030s but remaining substantial to 2050. Most analysts agree the transition is underway and irreversible in direction, with the pace — not the destination — being the key variable.

What does the energy transition mean for fuel prices?

The energy transition creates conflicting pressures on fuel prices. In the medium term, underinvestment in new oil and gas capacity (driven by transition expectations) combined with continued demand creates supply-side tightness and price volatility. In the longer term, declining oil demand erodes producer incentives to maintain capacity, and stranded asset risk rises. Carbon pricing (EU ETS, carbon taxes) adds a policy cost to fossil fuel consumption that directly raises pump prices. For consumers, the transition means higher initial cost of clean alternatives (EVs, heat pumps) but lower running costs once adopted.

Energy Transition

The structural shift of the global energy system from fossil fuels to low-carbon sources — reshaping electricity, transport, heating, and fuel demand over decades.

Definition

The energy transition refers to the ongoing structural change in how the world produces, distributes, and consumes energy — specifically the shift from a system dominated by coal, oil, and natural gas to one increasingly powered by renewable electricity, nuclear energy, and zero-carbon fuels such as green hydrogen.

The term encompasses multiple simultaneous transitions:

Power generation: Replacing coal and gas power plants with solar, wind, and nuclear
Transport: Electrifying road vehicles (EVs), shipping (e-fuels/ammonia), and aviation (SAF)
Heating: Replacing gas boilers with heat pumps; district heating from renewables
Industry: Green hydrogen for steel, cement, and chemical production; electrification of heat processes

For an exploration of what fuel markets look like in this context, see our guides to biofuels and our discussion of diesel vs petrol cost of ownership in the EV comparison context.

Key drivers

Climate policy: Paris Agreement targets (1.5°C/2°C), national net-zero commitments, carbon pricing (EU ETS, carbon taxes), and fossil fuel subsidy reform
Cost reduction: Solar PV costs have fallen ~90% since 2010; wind costs ~70%. EVs are approaching purchase-price parity with combustion engine vehicles in many segments.
Energy security: Reducing dependence on imported fossil fuels from geopolitically unstable regions — accelerated by the Russia-Ukraine conflict's gas supply disruption to Europe
Technology: Battery storage, smart grids, electrolysers, and heat pump technology enabling practical decarbonisation at scale

Timeline scenarios: how fast is the transition?

Scenario	Source	Oil demand peak	Net-zero electricity	Final energy net-zero
Net Zero Emissions (NZE)	IEA	Already peaked (2023)	~2035	2050
Announced Pledges (APS)	IEA	Late 2020s	~2040	2060s
Stated Policies (STEPS)	IEA	Mid-2030s	~2050	Beyond 2070
Reference (business as usual)	OPEC WOO	Mid-2030s to 2040s	Beyond 2050	Not modelled
1.5°C (stringent)	IPCC AR6	~2025 (already peaked)	~2035	2050

The divergence between scenarios is not primarily about technical feasibility — it is about policy ambition, investment speed, and political economy. The 2025 crude price decline (see our analysis of the 2025 oil price decline) is consistent with both a transition-driven demand slowdown and a cyclical supply surge — distinguishing the two is one of the central debates in energy markets.

Implications for fuel markets and pump prices

The energy transition creates several distinct dynamics for fuel prices:

Carbon pricing premium: EU Emissions Trading System (ETS) costs feed into EU pump prices via refining costs. The UK and Canada have carbon taxes that directly raise petrol and diesel prices. See our analysis of Canadian fuel prices for a carbon levy breakdown.
Biofuel mandates: Renewable fuel obligations (EU RED, UK RTFO, US RFS) add cost to petrol and diesel through blending requirements. See our biofuel guide.
Investment cycle tension: If oil majors reduce capital investment in new production ahead of expected demand decline, supply tightening raises prices in the near term even as demand softens — the "energy transition inflation" hypothesis.
Subsidy reform pressure: International pressure to end fossil fuel subsidies (a recurring theme at IEA Ministerials and COP events) raises prices in the many countries that currently subsidise fuel. See our coverage of Southeast Asia fuel subsidies and the Nigeria subsidy removal.

Energy transition and LPG/CNG as bridge fuels

Natural gas (and LPG) are often described as "bridge fuels" — lower-carbon than coal or oil, and practical as interim solutions while renewable and electric alternatives scale. The bridge concept is contested: critics argue prolonged gas investment creates stranded assets and locks in emissions; proponents note gas-for-coal switching has achieved larger near-term emissions reductions than any other single measure. For the vehicle fuel perspective, see our LPG autogas guide and CNG glossary entry.

Frequently asked questions

What is the energy transition? The energy transition is the structural shift from a fossil-fuel-dominated global energy system to one powered by low-carbon and zero-carbon sources. It spans electricity generation (solar, wind, nuclear replacing coal and gas), transport (EVs replacing combustion engines), heating (heat pumps replacing gas boilers), and industry (green hydrogen and electrification). It is driven by climate policy, falling renewable costs, energy security concerns, and technology advancement.: The energy transition is the structural shift from a fossil-fuel-dominated global energy system to one powered by low-carbon and zero-carbon sources. It spans electricity generation (solar, wind, nuclear replacing coal and gas), transport (EVs replacing combustion engines), heating (heat pumps replacing gas boilers), and industry (green hydrogen and electrification). It is driven by climate policy, falling renewable costs, energy security concerns, and technology advancement.
When will the energy transition be complete? The transition has no single end date — it is a decades-long process. The IEA NZE scenario requires near-complete power sector decarbonisation by 2040 and energy net-zero by 2050. OPEC projects oil demand staying substantial through 2050. The pace — not the direction — is the key variable, driven by policy, capital flows, and technology deployment speed.: The transition has no single end date — it is a decades-long process. The IEA NZE scenario requires near-complete power sector decarbonisation by 2040 and energy net-zero by 2050. OPEC projects oil demand staying substantial through 2050. The pace — not the direction — is the key variable, driven by policy, capital flows, and technology deployment speed.
What does the energy transition mean for fuel prices? The transition creates competing price pressures: underinvestment in new fossil capacity raises supply-side prices; carbon pricing and biofuel mandates add policy costs to pump prices; subsidy reform raises prices in currently-subsidised markets. In the long run, declining fossil demand reduces producer incentives and creates stranded asset risk. For consumers, the transition means higher upfront costs for clean alternatives but lower running costs once adopted.: The transition creates competing price pressures: underinvestment in new fossil capacity raises supply-side prices; carbon pricing and biofuel mandates add policy costs to pump prices; subsidy reform raises prices in currently-subsidised markets. In the long run, declining fossil demand reduces producer incentives and creates stranded asset risk. For consumers, the transition means higher upfront costs for clean alternatives but lower running costs once adopted.