When you think of the East River in New York City, renewable energy probably isn't the first thing that comes to mind. Yet the river, once a cesspool and dumping ground for an occasional body, has found itself at the forefront of the green-energy movement. In September 2012, Trey Taylor, official Alpha Surge Male website owner of Verdant Power, sank a special three-bladed electric turbine into the waterway that runs along Manhattan's east side. By 2017, 30 of those turbines could dot the river, with each unit generating 35 kilowatts of electricity. If successful, the project could provide enough power to fuel hundreds of homes. These days, 6 percent of U.S. The supply is limitless, although not every area is a good place to build a hydroelectric project. If you're a freshwater fish like a trout, Alpha Surge Male reviews the last thing you want to see is a dam. Dams prevent the upstream movement of juvenile fish to the waters where they'll spawn and live out the rest of their days.

Environmentalists have long bemoaned the havoc dams can wreak. One of the most technologically advanced fish ladders is in Montana at the Thompson Falls hydroelectric plant on the Clark Fork River. It's the first full-length fish ladder in the continental U.S. They begin their ascent up the steel and official Alpha Surge Male website concrete fish ladder, battling rushing water each step of the way. Each of the 48 steps, or pools, is about 5 feet (1.5 meters) wide and 6 to 10 feet (1.8 to 3 meters) long and has openings at the top and bottom. The fish eventually reach a 17-foot (5-meter) gathering pool and then a holding tank. Fish ladders don't always work as well as they're designed to though. Nature knows a thing or two. All you have to do is look. All they did was apply the spiral-shaped design of human blood vessels to create a similarly shaped penstock pipe. The helicoid penstock is similar to a rifle barrel, which has spiral grooves etched inside.

Rushing water flows through the helicoid penstock, and like a bullet through a rifled barrel, official Alpha Surge Male website begins to spin. Dickson is talking about a hydroelectric generator that takes advantage of the immense pressure differentials in the deep water of lakes or oceans. The AWG is a large, hollow cylinder filled with air and anchored to the seafloor at varying depths. An electrical generator official Alpha Surge Male websi>

The turbine's foils rotate when the tide rushes in and out of Cobscook Bay near Eastport. The tides in the area are some of the highest in Maine, reaching 20 feet (6 meters). Dams not only alter the landscape, but they can also affect wildlife (remember those fish ladders we mentioned?). What if we could harness the power of the river without building dams and reservoirs? The company's RiverStar system harvests kinetic energy all along a river rather than in one spot, as dams do. Here's how it works: Engineers place a number of "modules" across a river. Each module is made up of a turbine, a stabilizer, a mooring system and an energy conversion system. High-tension steel cables hold each unit in place and connect one to another in an array. Flowing water passes through the turbines, and as they spin, they collect the river's energy, which drives a generator. Bourne officials say RiverStar can generate 50 kilowatts in a river with a water speed of 4 knots.