Pisces Preserver

河流为“绿色”发电提供了巨大的潜力，但传统的涡轮机设计在环境上是不可接受的，除非在相对较少的场地类型中-主要是在已经存在堰或其他一些瀑布的地方。“双鱼保护器”避免伤害鱼类，同时也产生相对少量的电力，但在数千个可能的安装。这一发展可能使英国的“河流”装置从每年20到200个左右。

Rivers offer the promise of great potential for the generation of "green" electricity, but traditional turbine designs are not environmentally acceptable except in a relatively small number of site types - mainly where there already exists a weir or some other water fall. "Pisces Preserver" avoids harming fish while also producing comparatively small amounts of electricity, but in thousands of possible installations. This development could take UK "run-of-river" installations from around 20 to 200 per year.