EarthGrid has invented plasma tunnel boring robots that are solar-powered, use no water, have zero emissions and can bore tunnels 100x faster at 1/10th the cost of conventional techniques. They are building a network of large, underground utility tunnels that improve infrastructure and rapidly accelerate the transition to 100% clean energy by enabling underground clean energy power lines, high-speed data, water, and wastewater, H2 pipelines, e-commerce parcel transportation via pneumatic tubes, etc. They have a BOOM model (Build, Own, Operate and Manage) and intend to lease space to investment-grade utilities.