An analysis by a nonprofit research group claims that the United Nations organization on climate change has been drastically underestimating the carbon intensity of Chinese-made photovoltaic cells.
Environmental Progress, a nonprofit organization co-founded by investigative journalist Michael Shellenberger, in collaboration with The Blind Spot and Italian analyst Enrico Mariutti, argue in a recently released report that Chinese-made solar panels are about three times as dirty—in terms of carbon emissions during their production—as what has been claimed by the Intergovernmental Panel on Climate Change (IPCC), the U.N. body for assessing climate change science.
“People say solar panels don’t produce carbon emissions, but they do. And now, a major new investigation by Environmental Progress, drawing on the research of @enricomariutti, finds that solar panels made in China produce at least 3x more carbon emissions than IPCC claims,” Mr. Shellenberger wrote in a tweet on July 24.
Specifically, the IPCC claims that the carbon footprint of solar panels—most of which are made in China—is about 48 grams of carbon dioxide (CO2) per kilowatt-hour (kWh). But Environmental Progress said in a bombshell report that research carried out by Mr. Mariutti suggests the true carbon emissions are closer to 170 grams to 250 grams of CO2 per kWh—between three to five times higher than reported by the U.N.
“For 10 years, the @IPCC-CH has been presenting misleading evidence on the carbon intensity of photovoltaic energy,” Mr. Mariutti said in a Twitter post on July 24.
The IPCC didn’t respond to a request for comment on the report based on independent calculations.
‘Dirty Secret’
In April, Mr. Mariutti, an analyst specializing in economics as well as climate and energy policy, published a report titled “The Dirty Secret of the Solar Industry.” In the report, he argued that the IPCC was vastly underestimating the amount of carbon generated by Chinese-made photovoltaic cells because it was basing its calculations on a Europe-based, low-carbon supply chain rather than the coal-reliant production processes in China.
