https://renewability.net/tags/circular-economy/ Recent content in circular economy on Renewability.net Hugo -- gohugo.io en-us Sun, 25 Oct 2026 00:00:00 +0000 https://renewability.net/refurbished-shipping-containers-are-only-as-green-as-the-fit-out-around-them/ Sun, 25 Oct 2026 00:00:00 +0000 https://renewability.net/refurbished-shipping-containers-are-only-as-green-as-the-fit-out-around-them/ A 20-foot shipping container is about 2.2 tonnes of steel. A 40-foot one is closer to 3.7. Making that steel the conventional way, from iron ore in a blast furnace, releases roughly two tonnes of CO2 for every tonne produced. So a retired 20-footer holds something like four tonnes of carbon that has already been spent. Give the box a second job and you don’t spend it again. That is the whole pitch for container buildings, and it holds up.