Photograph via snooOG

A reddit dedicated to the production of energy from the power of water.

The Water Power Reddit

Hydroelectricity is the term referring to electricity generated by hydropower; the production of electrical power through the use of the gravitational force of falling or flowing water. It is the most widely used form of renewable energy, accounting for 16 percent of global electricity generation – 3,427 terawatt-hours of electricity production in 2010, and is expected to increase about 3.1% each year for the next 25 years.

**Wikipedia: hydroelectricity

Other related reddits

And Check Out the Big List of Related Reddits


1,104 Subscribers


hydropower calculators don't account for wheel size

If you had 20 gallons per minute at 20 feet of drop, the power output largely depends on the size of your turbine blade diameter and generator efficiency.

How can these things be accurate if those data points aren't there?

Also bonus question, can I just make a 20 foot diameter wheel and make more power as long as it was made light enough?

1 Comment
11:53 UTC


Shift in engineering interest - Civil/Environmental to mechanical

Hi I graduated with a BS in environmental engineering. I have experience with pumps, stormwater infrastructure, water treatment, etc. I’ve worked a few jobs in water resources and currently have a job more focused on geoscience/hydrography (mapping the ocean floor). In each of my jobs, I’ve found myself more interested in the mechanical systems than the other aspects. I would love to be able to shift over in working more on the mechanical systems that makeup water resources and even explore more into hydroelectric plants, working on turbines, etc.

My questions are 1) Do I need more MechE experience/schooling? And 2) should I be looking for more technician jobs if I really want to be in the field.

Please excuse my limited scope in the field of hydroelectricity and MechE.


04:01 UTC


Help! I bought and installed 2 MingDa hydro trubine/generators. .. and am having lots of troubles.

I've been having a lot of trouble with them... looking for others who might've tried these affordable units and made it through to a reliable system...

It seems that most of the issues are around the bearings supplied -- they have failed multiple times. One of the times it resulted in a burnt out stator.

The company says they'll warranty the stator, but if I can't get the thing to run for more than a week, then its not even worth repairing/replacing parts...

Other issues include the voltage regulator is a kind of on/off system, which seems hard on things...

Any advice? source of better bearings? Some encouragement that these things will work?


19:50 UTC


Does anyone know of the existence of a hydroelectric turbine that is also a water pump. Where it can pump water up into a reservoir using eg solar power, then also double as a hydroelectric generator when the water is passed through it again?

04:31 UTC

Back To Top