The next big thing in carbon capture? Trash.

Subscribe to enjoy similar stories. A group of technology companies is investing in a new form of carbon capture that aims to cut emissions from household waste in an effort to reduce landfill usage and to lower the amount of greenhouse gas emissions that are emitted into the atmosphere. Frontier, an umbrella group of tech companies including payments firm Stripe, internet giant Google and Instagram parent Meta is investing just under $32 million in a carbon-capture-and-storage project in Norway in the hope of removing 100,000 metric tons of carbon from the atmosphere between 2029 and 2030.

Under the plan, carbon-dioxide emissions that are generated when trash from the Norwegian capital Oslo is burned to produce energy for heating will be captured and then stored under the North Sea. The initiative is part of a larger carbon-capture project known as the Northern Lights project. The project is being put together in conjunction with the Norwegian government and Hafslund Celsio—Norway’s largest supplier of district heating—which runs the waste-to-energy site.

At the site in Norway, household waste is sorted into fossil waste and biogenic waste. Fossil waste includes materials like plastics, which can’t be broken down quickly. Biogenic waste includes trash that has come from organic sources, such as food scraps or garden waste.

After sorting, the waste is then burned by Hafslund Celsio, with the energy created used to heat the city of Oslo. The company is retrofitting the plant with a carbon capture system to collect an estimated 90% of the emissions from burning. Those emissions are then compressed and shipped to be stored under the ocean floor, in massive caverns left from oil and gas exploration.