Any new energy infrastructure will involve some sort of civil construction. Wind, solar, hydro, transmission networks, nuclear, even just replacing old coal plants with new more efficient ones. All of that requires significant civil construction work.
Any sort of government “think big” project will also usually involve building something. A high speed rail line would be one such example as would any scheme to move bulk quantities of water from one place to another.
Infrastructure to deal with the effects of a changing climate likewise just about all involves civil works. Eg new dams or raising existing dams are one thing that will obviously needed if projections of change are correct. Sea walls or other coastal modification is another. Roads and rail where they run close to sea level and need to be raised. Ports, bridges, sewage treatment plants and the list goes on.