Is the IEA underestimating renewables?

Scenarios from the International Energy Agency (IEA) have failed to predict the growth of renewables and overestimated the role of nuclear. Critics say that's a political choice.

Last year, the world's photovoltaic power capacity overtook nuclear for the first time – reaching 402 gigawatts, compared to 353 (GW). Wind power outstripped nuclear back in 2014, and by the end of 2017 amounted to 539 GW.

According to the World Wind Energy Association, 2017 saw the installation of 52.6 GW of new wind capacity. The latest estimates from Solar Power Europe put PV capacity installed in that year at 98.9 GW.

New nuclear power facilities going online were modest in comparison – amounting to just 2.7 GW, according to Mycle Schneider, lead author of the World Nuclear Industry Report.

Back in 2010, you might not have predicted such a shift in the global energy mix – at least, not if you were basing your predictions on the International Energy Agency's annual Word Energy Outlook (WEO), which estimated annual deployment of less than 10 GW of photovoltaic capacity.

According to this scenario, globally installed solar capacity would hit around 85 GW last year – 315 GW less than the actual figure.

Critics say this is part of a pattern of the IEA consistently underestimating the growth of renewables while making unrealistic assumptions about the development of nuclear. 

The 2010 WEO estimated that nuclear capacity would reach 470 GW by the end of 2017, over 110 GW more than the current global figure.

Infografik Photovoltaik Windkraft Atomkraft weltweit Vergleich 20007-2017 ENG

And that imbalance has, according to a 2015 study, has continued in subsequent annual WEOs from the IEA, which ignores facts such as "climate protection and divestment of finance from the conventional energy sector."

Political bias?

Claudia Kemfert, head of the German Institute for Economic Research's energy and environment department, told DW the IEA has underestimated drop in renewable power costs, as well as the cost of nuclear and fossil alternatives. 

"Probably for political and economic reasons, neither the external costs of fossil fuels nor the cost increases of nuclear energy have been factored in," Kemfert said. "The fossil fuel and nuclear industries have an interest in artificially exaggerating the cost of renewables in order to influence policy in their favor."

Related Subjects

Sven Teske of the Institute for Sustainable Futures at Sydney University, an advisor to the International Panel on Climate Change, told DW he'd been told unofficially that how much nuclear power was included in IEA scenarios was "basically dictated."

Hans-Josef Fell, president of the Energy Watch Group, says the IEA acts "on behalf of the OECD governments that ultimately oversee it," and reflects their ongoing commitment to the fossil fuels sector.

And that has serious consequences, Fell says. "It is likely these scenarios are a major culprit in the global community's failure to put a sufficiently intensive focus on renewable energy over the last ten to 20 years," he told DW. "It paints a picture of renewables as too expensive and unable to expand fast enough."

Infografik Solarstrom weltweit günstig ENG

Scenarios vs. forecasts

The IEA counters that such claims are based on "a common misconception about the purpose of the Outlook," which deals with "scenarios, not forecasts or predictions," based on actual government policies.

Spokesperson Jon Custer pointed out that the IEA also now publishes a five-year renewables forecast, including an "accelerated case" that assumes governments will adopt more ambitious policies on renewables.

"Solar PV is entering a new era," the report says, that "marks a turning point and underpins our more optimistic solar PV forecast," adding that, "this revision is driven by continuous technology cost reductions and unprecedented market dynamics in China as a consequence of policy changes."

Teske says he hopes, "something is happening at the IEA, even if of course they continue to try and underestimate" the prominence of renewables.

If the IEA based its models on the "real prices for renewable and fossil energy, the only conclusion would be that we will arrive will at 80 to 100 percent of renewables within a generation," Teske insists.

On the flip side, there is growing agreement among energy experts that nuclear power cannot be seen as economically viable compared to renewables.

Spreading nuclear weapons cost

A study by the Lappeenranta University of Technology (LUT) in Finland simulating the costs of the global transition to renewables and found that a 100-percent renewable energy system would be cheaper that what we have today.

England Protest gegen Pläne für eine unterirdische nukleare Endlagerung

The disposal of nuclear waste is still controversial, especially in the U.K.

Fell, meanwhile, has documented the explosion of nuclear powers costs, as well as the security concerns over new nuclear reactors.

Yet India, Saudi Arabia, Turkey and the UK remain committed to building new nuclear power plants. And Fell sees a motive for this that has nothing to do with securing an affordable energy supply. "The main driving force behind the new nuclear reactors are nuclear weapons, and the desire for nuclear weapons," he told DW.

Scientists at the University of Sussex have come to a similar conclusion. In their study of British nuclear policy they attribute the construction of new reactors to cross-funding with military nuclear programs. They argue that maintaining nuclear power programs and expertise at the expense of electricity customers has the advantage of relieving the defense budget.  

Nature and Environment

Deadly disaster

The worst nuclear disaster of all time, the explosion at Chernobyl nuclear plant in Ukraine released massive amounts of radiation into the atmosphere. Areas close to the plant - in Ukraine, Belarus and Russia - were heavily contaminated. Heightened levels of radiation were also measured across most of Europe. The "exclusion zone" around Chernobyl remains off-limits to human habitation today.

Nature and Environment

It happens again

After a magnitude-9 earthquake and consequent tsunami, three nuclear reactors at Fukushima power plant in Japan went into meltdown in March 2011. There were also four hydrogen explosions. The accident released 500 times as much radioactive cesium-137 as the nuclear bomb dropped on Hiroshima in 1945. The clean-up is expected to take decades.

Nature and Environment

Sickening impact

After Chernobyl, thousands of people developed cancer. In Japan too, the heavily contaminated region of Fukushima, where 200,000 people lost their homes, saw cases of the disease escalate. The number of children with thyroid cancer there is 20 times higher than other regions.

Nature and Environment

Rallying against nuclear power

Chernobyl fueled public opposition to nuclear power, particularly in Europe. The same happened after Fukushima. Before the Japanese disaster, the country relied on nuclear for 30 percent of its power. That has fallen to 1 percent. The government wants to continue producing nuclear power and plans to reinstall some reactors. But affected regions have successfully pushed back those plans.

Nature and Environment

Nuclear industry in crisis

Today, the nuclear power sector is deep in economic crisis. In Japan, the United States and France, nuclear power plants run at a loss, and construction projects for new reactors have been postponed.

Nature and Environment

New-build set-backs

France had high hopes for its newest nuclear reactors - called pressurized water reactors (PWRs). This technology was supposed to be safe, and the Flamanville power plant was due to be switched on in 2012. Due to security issues, that's been pushed back to 2018 at the earliest. The project will cost more than 10 billion euros - three times the original budget.

Nature and Environment

Great Britain plans new reactors

For years, the UK has been planning to build two new PWR reactors at Hinkley Point. Costs are estimated at 33 billion euros and groundbreaking is slated for 2019. But doubts are growing over its economic viability. The electricity it produces will be much pricier than solar or wind power, and will need subsidies to compete in the market.

Nature and Environment

Aging reactors up for grabs

Nuclear power plants used to be lucrative. But now, many are old and frail. Repair costs often mean they cannot turn a profit. Swiss energy corporation Alpiq recently tried to give away two of its old plants, 33 and 38 years old, to French energy company EDF - which declined the offer.

Nature and Environment

Disasters abroad prompt German phase-out

Three decades ago, the Chernobyl disaster galvanized Germany's anti-nuclear movement, which is often cited as the roots of the country's energy transition. In 2002, Germany passed a law that would have seen the last reactor shut down in 2022. The plan was later scrapped by Angela Merkel's government. But after Fukushima, Merkel quickly reversed her decision and the phase-out was back on track.

Nature and Environment

Switching them off

So far, nine of Germany's reactors have gone offline, with eight more to follow by 2022. To finance the costs of nuclear waste disposal, plant operators must pay 23.6 billion euros into a federal fund. The operators themselves are responsible for the similarly costly process of dismantling the plants, which will take decades to complete.

Nature and Environment

Growing fear of accidents

Across the EU and Switzerland 132 nuclear reactors are still online. They were designed to operate for 30 to 35 years - their average age is now 32 years. Malfunctions and security issues are frequently detected and protestors are increasingly calling for plants to be shut down.

Nature and Environment

China pushes on with nuclear

No new nuclear power plants have been built in the EU, Japan or Russia since the Fukushima disaster in 2011. China remains committed to nuclear, partly to replace coal-based power. But the country is also upping investment in wind and solar.


Related content