Editing Tidal power (section)

=== Tidal stream generator ===
{{Main|Tidal stream generator}}

Tidal stream generators make use of the [[kinetic energy]] of moving water to power turbines, in a similar way to [[wind turbine]]s that use the wind to power turbines. Some tidal generators can be built into the structures of existing bridges or are entirely submersed, thus avoiding concerns over aesthetics or visual impact. Land constrictions such as straits or inlets can create high velocities at specific sites, which can be captured using turbines. These turbines can be horizontal, vertical, open, or ducted.<ref name="Tethys">{{cite web|title=Tidal – Capturing tidal fluctuations with turbines, tidal barrages, or tidal lagoons|url=http://tethys.pnnl.gov/technology-type/tidal|website=Tidal / Tethys|publisher=[[Pacific Northwest National Laboratory]] (PNNL)|access-date=2 February 2016|url-status=live|archive-url=https://web.archive.org/web/20160216190319/https://tethys.pnnl.gov/technology-type/tidal|archive-date=16 February 2016}}</ref>