Timeline for Why is hydro-electric power still scarce in some places?
Current License: CC BY-SA 4.0
23 events
| when toggle format | what | by | license | comment | |
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| Nov 15, 2019 at 1:02 | comment | added | Mark | @StainlessSteelRat, the reason the Grand Canyon isn't dammed is entirely due to its status as a national park. The Colorado River is dammed both downstream (Hoover Dam/Lake Mead) and upstream (Glen Canyon Dam/Lake Powell). A dam at the west end of the Hualapai Reservation could give you about 600 meters of hydraulic head (twice that of the world's tallest dam) and one of the largest reservoirs in the world. Or you could do a pair of 300-meter dams, with the second one at Tapeats Creek, to keep reservoir-filling times down to only a few decades each. | |
| Nov 14, 2019 at 22:43 | comment | added | Level River St | There's no shortage of water in the grand canyon. That's why the Hoover Dam is located a little beyond its bottom end. According to usbr.gov/lc/region/pao/faq.html the max flow for power generation is 32000ft3/s which is 285000 million m3/year if run flat out. I suspect most of the water comes from the Rocky Mountains and the Grand Canyon itself makes little difference. Reasons for not building a dam in the Grand Canyon are (1) it's a national park, and (2) the Colorado river is already so exploited that it often doesn't reach the sea. Further damming would lead to more evaporation | |
| Nov 13, 2019 at 16:58 | comment | added | RonJohn | @SolarMike you make an outrageous claim and then tell us to do our own research. That's the kind of tactic which conspiracy theorists employ. | |
| Nov 13, 2019 at 16:09 | comment | added | Solar Mike | @RonJohn no, giving you a hint to enable you to continue your journey to enlightenment... But as you don't seem to appreciate I will not engage in future. | |
| Nov 13, 2019 at 16:04 | comment | added | RonJohn | @SolarMike dodging again. | |
| Nov 13, 2019 at 15:58 | comment | added | Solar Mike | @RonJohn now you can have the fun using a map and working out the catchment area - a standard part of the task when analysing a hydro project. | |
| Nov 13, 2019 at 15:56 | comment | added | RonJohn | @SolarMike as if the annual rainfall for the more-than-continent-spanning USA is relevant to someone's local situation. | |
| Nov 13, 2019 at 13:02 | history | edited | StainlessSteelRat | CC BY-SA 4.0 |
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| Nov 13, 2019 at 9:11 | comment | added | Solar Mike | @RonJohn check out annual rainfall for countries you are interested in - I don’t have the time... | |
| Nov 13, 2019 at 9:06 | comment | added | RonJohn | @SolarMike that's the kind of cop-out answer I expected from you. | |
| Nov 13, 2019 at 8:48 | comment | added | Solar Mike | @RonJohn do some research... | |
| Nov 13, 2019 at 7:48 | comment | added | RonJohn | @SolarMike "some 400 million m^3 per year". How many valleys are required for this 400 million m^3? | |
| Nov 13, 2019 at 7:46 | comment | added | RonJohn | @SolarMike The Grand Canyon is a big, fat "(valley) that (is) useless for much else other than water storage as they are very steep sided and only ock[sic] with little to no vegetation." Let's build a dam there!!! | |
| Nov 13, 2019 at 7:44 | comment | added | Solar Mike | @RonJohn some 400 million m^3 per year... | |
| Nov 13, 2019 at 7:43 | comment | added | RonJohn | @SolarMike "Some places have valleys that are useless for much else other than water storage as they are very steep sided and only ock with little to no vegetation." How much water runs through those valleys? | |
| Nov 12, 2019 at 23:51 | comment | added | JMac | @StainlessSteelRat Interesting, thanks. My company has some ties to the Lower Churchill project, so I was pretty curious. I think I answered my other question too. Newfound and Labrador technically has a lot more hydro generating power than the province needs; but a large amount of it is sold off, and was basically built to be sold off. | |
| Nov 12, 2019 at 23:09 | comment | added | StainlessSteelRat | Majority of upper Churchill power goes across Quebec to market. Some (up to 5%) is consumed within western Labrador. Coastal Labrador uses Diesel. Lower Churchill will supply Island needs and excess will be sold to Nova Scotia, with rights to access New Brunswick and eastern seaboard US markets when Upper Churchill contract ends (2041). That is what I understand of the plans. | |
| Nov 12, 2019 at 22:32 | comment | added | JMac | @StainlessSteelRat So it's the already existing Churchill stations that sell to Quebec, while the new Lower Churchill stations can connect with Maritime Link? Also, would Newfound and Labrador (not just the island) have enough hydro if neither Churchill plant were selling out of province? | |
| Nov 12, 2019 at 22:22 | comment | added | StainlessSteelRat | @JMac Newfoundland's Island resources are insufficient for the island. Maritime link is active and peak power is coming from Nova Scotia. Lower Churchill will use the Maritime Link to sell power to Nova Scotia. The Thermal facility is going through retrofit. (Upper) Churchill's power is sold to Quebec and shipped to Eastern seaboard US. | |
| Nov 12, 2019 at 22:14 | comment | added | JMac | Are Newfoundland's hydro installation insufficient to provide for the province, or are other sources needed because they sell a large amount of the generated power? For example, I think Quebec is buying a lot of the power from Churchill falls, and the Maritime Link project was done to sell their energy to the Eastern grid as well (though I don't know if the Maritime Link was completed yet). | |
| Nov 12, 2019 at 17:29 | history | edited | StainlessSteelRat | CC BY-SA 4.0 |
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| Nov 12, 2019 at 16:08 | comment | added | Solar Mike | Some places have valleys that are useless for much else other than water storage as they are very steep sided and only ock with little to no vegetation... | |
| Nov 12, 2019 at 14:17 | history | answered | StainlessSteelRat | CC BY-SA 4.0 |