Hydropower

[David B. Benson]

Climate change to hinder Africa's hydropower says IEA
Elizabeth Ingram
2020 Jun 16
Phys.org
www.powerengineeringint.com/renewables/hydroelectric/climate-change-to-hinder-africas-hydropower-says-iea/

But Nile River system to benefit at the expense of southern and western Africa

[David B. Benson]

How a historic drought led to higher power costs and emissions
Laura Oleniacz
2020 Jun 19
Phys.org
phys.org/news/2020-06-historic-drought-higher-power-emissions.html

Reservoirs emptied at the same time that the price of natural gas increased.

[David B. Benson]

Pump Up the Storage
Tom Murphy
2011 Nov 15
DoTheMath
dothemath.ucsd.edu/2011/11/pump-up-the-storage/

The impossibly of much pumped hydro in the USA.

h/t to Mr. Know It All @ Real Climate

[David B. Benson]

Pumped hydro schemes:
www.realclimate.org/index.php/archives/2020/06/forced-responses-jun-2020/comment-page-2/#comment-768847

Wherein I point out that the economics fails.

[David B. Benson]

US demand for clean energy destroying Canada's environment, indigenous peoples say
Matt Hongoltz-Hetling
2020 Jun 22
The Guardian
www.theguardian.com/environment/2020/jun/22/us-clean-energy-demand-destroying-canadian-environment-indigenous-peoples-say

Dams create conditions for methylmercury.

[David B. Benson]

Ethiopia to begin filling disputed dam in 2 weeks
Elias Meseret
AP News
apnews.com/863f43480c0e550fafe3837268d70228

Sudan and Egypt need the Nile River water as well.

[David B. Benson]

Beginning of the end for megadam projects in China as solar and wind power rise
2020 Jul 04
The Japan Times
www.japantimes.co.jp/news/2020/07/04/business/megadam-projects-china-solar-wind-power/

Sites in Tibet too remote.

[David B. Benson]

China's hydropower plant makes records after unprecedented test
2020 Dec 23
CGTN
news.cgtn.com/news/2020-12-23/China-s-hydropower-plant-makes-records-after-unprecedented-test-WsdDvNjxEQ/index.html

This hydropower dam has 800kV UHVDC transmission, only used in China. The valve mentioned is the way to switch off the transmission line in the event of a fault. I know enough to be impressed with this engineering feat.