In the future, we could see a natural gas plant capable of capturing all of its emissions at zero cost using a technology called carbon capture and storage, or CSS. While the tech has been around for decades, it hasn’t been deployed at scale. Last July, U.S. startup Net Power successfully built a prototype plant that ran a full power cycle without releasing troublesome emissions into the air. It plans to scale up to a full-size plant by 2021. Wider adoption will likely be driven by new tax credits of up to $50 for each metric ton of emissions captured and stored by a power plant or factory.