
We have a lot of locks and dams in Southwestern Pennsylvania. The one pictured above is on the Allegheny River, not far from where I used to live in Fox Chapel. These dams are for navigation and flood control. I always wondered why no one ever thought to take advantage of the water spilling over the top to generate electricity? Well, it now seems that might happen! From the P-G:
This summer, Illinois-based Hydro Green Energy received a 50-year license from the Federal Energy Regulatory Commission for a new 5.25 megawatt hydroelectric project at the Braddock Locks and Dam on the Monongahela River.
FFP New Hydro has a more sweeping vision — FERC has granted the Boston-based developer preliminary licenses to build hydropower plants on eight dams on the three rivers. The company, which is majority owned by renewable energy investment firm U.S. Renewables Group, is also in the early stages of exploring putting plants at four more of the rivers’ dams.
If each dam has a power plant generating 5.25 MW, and all 13 projects are completed, that would mean over 68 MW of clean power from already existing impoundments. I've seen seat of the pants calculations that equate 1 megawatt with powering 1,000 homes, which seems a good enough figure for an amateur like myself, so that's roughly 68,000 homes that could be powered by hydro on our three rivers. That's certainly not enough power for the entire region, but its clean, and will help ease the burden on fossil fuel plants and help with a transition to more solar, wind, and nuclear power. Also, while the sun may not always shine or the wind always blow, in my over 40 years of living here, the water always flows over those dams, even in the winter.
I say "Do it!"