How to Slowly Phase Out Fossil Fuels While Maintaining Energy Access

How to Slowly Phase Out Fossil Fuels While Maintaining Energy Access

How to Slowly Phase Out Fossil Fuels While Maintaining Energy Access

The Challenge of Phasing Out Fossil Fuels

The challenge of phasing out fossil fuels is finding ways to replace them with renewable energy sources while still providing reliable and affordable energy access. Fossil fuels like coal, oil, and natural gas currently provide over 80% of the world’s energy needs. However, burning fossil fuels emits greenhouse gases like carbon dioxide that contribute to climate change. Phasing them out is necessary to prevent the worst impacts of climate change, but it must be done carefully to avoid economic and humanitarian crises.

Why We Can’t Quit Fossil Fuels Cold Turkey

Simply stopping the use of fossil fuels overnight is not realistic. Our economies and infrastructure are heavily dependent on fossil fuels. Rapidly eliminating them would lead to price spikes and shortages that could cripple industries, disrupt transportation networks, and leave millions without access to affordable energy. We need a planned transition that develops alternatives while slowly phasing down fossil fuel use.

The Role of Government Policy

Governments will need policy measures to manage the phase-out of fossil fuels while ensuring energy access. Policies like carbon pricing and clean energy mandates can incentivize the transition to renewables. Meanwhile, subsidies and public investment can help bring down costs of clean energy. Assistance programs will be needed to help low-income households access clean energy. The phase-out timeline should be gradual but accelerate over time as alternatives scale up.

Expanding Renewable Energy

Phasing out fossil fuels requires rapidly scaling up renewable energy sources like solar, wind, hydroelectric, geothermal and biomass. Each country will need to utilize its best renewable resources.

Solar and Wind

Solar and wind power have become cost-competitive with fossil fuels in many areas. Government targets, subsidies, and streamlined permitting can enable large-scale build-outs of solar farms and wind turbines. Rooftop solar incentives allow households to generate their own clean electricity. Grid infrastructure upgrades are needed to handle the variability of solar and wind.


Hydropower from dams provides consistent baseload power in many regions. Upgrades to existing dams and construction of pumped storage hydropower can expand capacity. However, new large dams have high environmental impacts. Small run-of-river hydro projects have lower impacts.


Geothermal power harnesses heat beneath the earth’s surface for steam or hot water to drive turbines. It provides constant stable power. Countries with high geothermal potential like Iceland already generate significant electricity from geothermal. More sites can be developed with drilling and exploration.


Bioenergy from plant materials can provide solid, liquid, and gaseous fuels. However, impacts on land use, food production, and biodiversity must be managed carefully. Agricultural residues and municipal waste offer sustainable bioenergy feedstocks. Advanced biofuels are being developed to have low land use impacts.

Improving Energy Efficiency

Along with expanding renewables, improving energy efficiency in buildings, industry, and transportation will reduce fossil fuel demand. Efficiency measures like LED lighting, high-efficiency appliances, smart thermostats, waste heat recovery, and mass transit can often pay for themselves through energy savings. Strong efficiency standards and incentives need to be enacted.

Managing the Pace of the Transition

The transition from fossil fuels to renewables will be an enormous undertaking needing massive investments and upgrades to infrastructure. The pace must be managed carefully to enable economic adjustment without supply disruptions. Fossil fuels should be phased out sector-by-sector starting with coal power. Oil and natural gas can be phased down more gradually as alternatives scale up. Some applications like air travel are especially challenging. Initially more expensive options like sustainable biofuels may be needed to decarbonize difficult sectors. With a coordinated global effort, a managed phasing out of fossil fuels can succeed while expanding energy access. But the transition must begin now, not later.