Actually, there's more work being done than just runway lighting. From TXDOT's bid specification:
https://www.dot.state.tx.us/avn/avninfo/notice/construct/mustgntb.pdf
LA class subs are 35,000 shp, which equates to about 26 Mw of power. In contrast, the Comanche Peak nuke plant south of Dallas has multiple reactors, each >1,000 Mw. Looks like each sub will generate about as much as 26 wind turbines.