It's becoming less and less expensive to install too — making it ready and able to compete with natural gas and other power sources on the open market. (energynews.us)
The limitation with hydro and other power sources like tidal is their distance from the market. (drtimball.com)
Using the Silvonic Pro with other power sources: Connect the auxiliary power cable's clips to any source of 12 - 36 volts AC or DC. (elixa.com)