Iran war energy shock: 5 reasons renewables are ready to protect people from fossil fuel price spikes

The current energy shock is hitting people where it hurts most: household budgets. Fuel prices are up sharply, food is becoming more expensive and electricity bills are climbing. And while families pay the price, fossil fuel corporations are profiting from the instability driving those costs.

This isn't a coincidence, it is how the fossil fuel system works.

When energy depends on globally traded fossil fuels, any disruption, whether that is war, geopolitical tensions or supply shocks, ripples through economies and lands in people's wallets. This crisis is a warning light on a failing system and a signal to speed up the switch to renewables. That is where renewables come in as a practical, already deployed solution that is reshaping energy systems around the world.

1. Renewables now dominate new power capacity and outcompete fossil fuels on costs

Tala Desert, Qinghai Province: Solar power is used to transform the barren land into grassland. The herders raise "Photovoltaic sheep" to prevent the grass from growing too tall, June 2025.

In 2025, about 85% of all new electricity generation capacity built worldwide was renewable, mostly solar and wind. That is not a niche trend, it is a structural shift.

Solar and wind are now among the cheapest sources of new power in most regions, undercutting new gas and coal-burning power stations and offering protection from fossil fuel price spikes. New data from the International Renewable Energy Agency (IRENA) shows that 24/7 renewables (solar, wind and batteries) can now beat new coal and gas on cost in many parts of the world, while staying reliable around the clock.

Countries like Costa Rica and Albania already get almost all of their electricity from renewables, showing what a high-renewables system can look like in practice. Even in the United States, over the course of March 2026 the country got more electricity from renewables than from natural gas, which is usually the single largest source on the US grid, marking an important milestone in the transition. This is proof that a clean energy future is within reach.

That matters for households because cheaper generation helps reduce electricity bills. More importantly, once built, solar panels and wind turbines do not rely on fuel that has to be bought on volatile global markets. They produce energy from the sun and wind that are free and locally available. That breaks the link between international crises and domestic energy prices.

2. Battery storage and smart grids make wind and solar reliable

Greenpeace Russia action marking the launch of a petition for renewable energy development, photographed at the Kochubeevskaya wind farm in the Stavropol region.

Battery prices have fallen sharply, with the cost of utility-scale battery storage dropping by more than 90% since 2010, and large projects are now being built from Australia and India to Japan and the Philippines to store solar and wind power and release it when needed. At the same time, smarter grids, better forecasting and more flexible demand are allowing energy systems to balance supply and demand more effectively than ever before, including in countries that already have high shares of renewables on their grids.

The result is a system that does not rely on the constant burning of fossil fuels to remain stable. Instead of depending on a single fuel, it draws on a mix of renewables, storage and smarter infrastructure, like smart grids and virtual power plants, and that diversity creates resilience.

3. Critical minerals are a challenge, but far smaller than constant fossil extraction

May 2025: Greenpeace Belgium takes action at the entrance to DEME's Annual General Assembly. The aim is to warn shareholders of the serious risks associated with investing in deep-sea mining.

All energy systems need materials. The difference is what happens over time. Fossil fuels require constant extraction: drilling, mining, transporting and burning coal, oil and gas every day for decades, with pollution and damage adding up all the time.

Renewables work differently. Building solar panels, wind turbines and batteries does need metals and minerals, but once installed they generate clean power for 20-30 years or more without burning fuel, and life-cycle studies show much lower emissions and material use than the never-ending cycle of fossil fuel extraction and combustion.

That does not mean we can ignore environmental or social impacts; it means we must cut demand through efficiency and public transport, ramp up recycling and reuse, and make sure mining never happens in no-go areas or at the expense of communities and Indigenous Peoples. Crucially, it means moving away from an energy system that never stops extracting.

4. Clean, homegrown energy can shield households from price shocks

A hospital damaged by the war near Kyiv has been rebuilt in a sustainable and green way. Greenpeace, together with green Ukrainian NGOs initiated the installation of a heat pump and solar power plant for the Horenka hospital to increase the building's energy independence, the community's resilience and reduce the country's CO2 emission.

Countries that rely more on renewables and less on imported gas have generally seen smaller electricity price spikes than those locked into fossil fuels, including during the current shock following Trump and Netanyahu's war on Iran.

Analysis shows that meeting renewable energy targets can cut electricity price volatility and reduce extreme price spikes, because wind and solar do not need fuel that can suddenly become scarce or expensive. China's huge build-out of solar, wind, batteries and electric vehicles is now helping it weather fossil fuel price swings better than many neighbours that stay dependent on imported oil and gas, highlighting how clean energy can act as a shield in times of crisis.

The same applies at the household level. Rooftop solar, electric heating and electric transport reduce exposure to rising fuel costs and make bills more predictable over time. In the UK, record numbers of people are now installing rooftop solar, with more than 27,000 installations in March 2026 alone, as families look for proven ways to cut bills for good. Once these systems are in place, they provide a level of certainty that fossil fuels cannot.

That is why demand for these technologies surges during crises. People are looking for ways to take control of their energy costs, and clean, homegrown renewables are the way out of a system where every new conflict or embargo can send bills soaring.

5. Community-owned decentralised, renewables build real energy security and resilience

Zaporizhzhia nuclear power station in Ukraine. High-voltage pylons at the Zaporizhzhia nuclear power plant near Ernergodar in Ukraine.

Energy security is not only about where power comes from, but also about who controls it and who benefits. Community-owned and local renewable projects, such as village solar farms, local wind turbines or municipally run energy services, keep more of the benefits in people's hands and reduce dependence on fragile global fuel supply chains and big energy companies.

"Decentralised" here simply means energy systems built from many smaller, local sources instead of a few huge power plants. In practice, that means a town with rooftop solar, a community wind turbine and a local battery is less exposed if a pipeline is cut, a tanker route is blocked or a single large plant fails.

In South Korea, for example, new "solar income villages" use community solar to fund public services while cutting dependence on imported oil and gas, showing how clean, homegrown power can support both livelihoods and security.

This decentralised model also matters for safety in a world marked by war and geopolitical instability. Huge, centralised power plants and cross-border fuel routes can become targets or leverage in conflicts, while a web of smaller, local renewable systems is harder to disrupt and easier to repair. By scaling up community-owned and homegrown renewables, governments can build an energy system that is cleaner, fairer and far more resilient when the next crisis hits.

The lessons from the Iran war energy shock are clear. As long as we depend on fossil fuels, billions of people will stay exposed to external shocks they cannot control; prices jump when supply is disrupted and corporations profit from the volatility while people pay the price.

Renewables offer a better way. They cut exposure to global instability, can lower costs, weaken the grip of autocratic governments that control fossil fuel supply, and can be built in ways that share benefits with communities.

This requires more than swapping one fuel for another. It means replacing a fundamentally unstable system that routinely produces crises and profits from them with one that is fair, resilient and powered by clean, homegrown energy. Renewables are ready. Governments must introduce permanent taxes on oil and gas profits applied to all profits, back a global polluter-profits tax under a UN Tax Convention with binding rules to stop profit-shifting, and use the revenues to support households facing rising bills, massively scale up renewable energy, and fund the most climate-impacted communities around the world.