Chilean Skies Saved: $10 Billion Hydrogen Project Scrapped Near World-Leading Observatories
A massive industrial project that threatened the pristine conditions vital for astronomical observation in Chile’s Atacama Desert has been canceled, sparking celebration within the scientific community. The proposed $10 billion INNA facility, intended for green hydrogen and ammonia production, was formally withdrawn following concerns over its potential impact on nearby telescopes.
The INNA project, encompassing 3,000 hectares and including a port, transport infrastructure, and three solar power plants, had been under review by Chilean environmental regulators for nearly a year. Astronomers repeatedly voiced alarm that the facility’s proximity to the Paranal Observatory and other key sites would irreparably compromise ground-based astronomy, considered the best in the world.
“This cancellation means that the INNA project will no longer have a negative impact on the Paranal Observatory,” stated a representative of the European Southern Observatory (ESO), which operates three telescope complexes in Chile. “However, what this megaproject has brought to the table is the urgent need for clear protection measures around the sites where professional astronomy is carried out in Chile. This cancellation does not mean that the work to protect the skies is over.”
Concerns Over Light Pollution and Instrument Interference
Scientists detailed a range of potential disruptions the INNA facility could have caused. These included increased light pollution, subtle vibrations in the earth affecting sensitive instruments, airborne dust settling on telescope mirrors, and heightened atmospheric turbulence. Experts argued that locating such a large-scale operation so close to the observatories – just 11.6km from Paranal – presented unacceptable risks given the potential for astronomical damage.
Chile’s environmental evaluation service confirmed the withdrawal of the project after discussions with AES Andes, the company behind the proposal. AES Andes, a subsidiary of US-based AES Corporation, generates power through a diverse portfolio including coal, gas, hydroelectric, wind, and solar sources. While the company declined to provide a statement, a press release indicated the decision stemmed from a broader analysis of its project portfolio, adding that the facility was “absolutely compatible” with other activities in the area.
Nobel Laureate Leads Opposition
The fight against the INNA project gained significant momentum in December with an open letter spearheaded by Reinhard Genzel, the 2020 Nobel Prize winner in Physics. The letter directly urged the Chilean government to halt the project, emphasizing the irreplaceable value of the Atacama Desert’s observing conditions.
The Very Large Telescope (VLT) at Paranal, situated 2,600 meters above sea level, has already contributed to discoveries recognized with three Nobel Prizes. Nearby, construction continues on the Extremely Large Telescope (ELT) on Cerro Armazones, poised to become the world’s largest and most powerful telescope. The ELT promises to revolutionize our understanding of distant galaxies and the search for exoplanets potentially capable of supporting life.
The cancellation of the INNA project underscores the growing recognition of the need to balance industrial development with the preservation of unique scientific resources. While the immediate threat to Chile’s skies has been averted, the ESO representative emphasized that ongoing vigilance and robust protective measures are crucial to safeguarding this invaluable asset for future generations.
