As climate change marches on, world leaders and scientists alike have considered the potential of geoengineering solutions to capture and store emissions. In fact, scientists recently concluded that we need to have “carbon-sucking” geoengineering tech in place by as early as 2030.
As reported by Quartz, it seems Iceland is ahead of that deadline, with the help of a 300-megawatt geothermal power plant that’s been built in Hellisheiði. The plant captures more carbon dioxide (CO2) than it produces, meaning it produces negative emissions. That said, it’s true that the plant only produces about one third of the carbon a traditional coal plant would — but more than what it emits is both captured and stored underground.
To accomplish this engineering marvel, a wall of fans sucks in air, filters out CO2, and injects the CO2 into water which is then pumped into the ground where it becomes rock. This process is simple and produces usable energy while eliminating emissions from the environment; truly a win-win. So why hasn’t this technology been immediately adopted and replicated in every state in every country in the world? The short answer is cost.
Currently, this process costs about $30 (USD) for every ton of carbon dioxide that is turned into rock, which is not particularly expensive. However, capturing the CO2 from the air would be significantly more cost-intensive. If the cost of pulling carbon dioxide could be whittled down to $100 per cycle, as its creators are aiming for, then the technology’s adoptability would be much improved.
The concept of capturing and storing carbon underground is nothing brand new: geoengineering solutions to climate change have been brewing and developing for years. However, the concrete completion of this plant proves not only that this process works as intended, but that the costs of producing energy in this manner aren’t completely out of reach. As the technology continues to advance and improve, they will hopefully continue to become more affordable, and in turn, more widely adopted.
If we continue to produce energy in the same manner, and at the same rate, as we currently are, climate change will only worsen. Its life-threatening repercussions will continue to become increasingly devastating — not to mention costly. While we shift from fossil fuels to renewable resources, it’s important to note that our emissions aren’t going anywhere.
Even if we were to eliminate our entire carbon footprint right now, we’d would still see years and years of energy usage left in our wake. This isn’t to say we shouldn’t do anything, as we’ve already jeopardized ourselves and the planet. Rather, it serves as a reminder that while we make changes regarding the types of energy we use, and how we use them, we can also invest in and support the elimination of existing emissions through emerging technology.