Re:South Africa's national electricity crisis to worsen
by Semaphor on Sunday November 20, 2022 @03:17PM
(#33684815)
For a whole house that sounds reasonable? I’m at 4200 kWh a year with only 2 people in a 60 m² apartment. Durchlauferhitzer, but still.
The link you posted even mentions a range of 14,000 - 28,000 kWh for houses not built for efficiency.
Re:South Africa's national electricity crisis to worsen
by ununoctium87 on Sunday November 20, 2022 @04:11PM
(#33685349)
Houses in South Africa are (on average) 1) bigger, and 2) poorly insulated.
Also, way less efficient hot water cylinders
Re:South Africa's national electricity crisis to worsen
by tannhaeuser on Sunday November 20, 2022 @04:22PM
(#33685472)
> water heating by electricity [...] is rare because it's just so inefficient
Entirely depends on the number of accommodation units per building, installation and ongoing maintenance cost of heaters and metering equipment, availability of gas and/or district heating, etc. It's certainly uneconomical to send heated water through expensive copper pipes in a building inhabited by only two singles when it's needed only for a shower in the morning, yet has to be kept running for hygienic reasons the remainder of the day.
Re:South Africa's national electricity crisis to worsen
by throwawaaaylkt on Sunday November 20, 2022 @11:39PM
(#33688831)
South Africans are used to cheap electricity historically. Our usage is quite high, even after we moved overseas....
... what? That's 11.000 kWh a year. Even in Germany, with water heating by electricity (which is rare because it's just so inefficient), homes rarely hit 6.000 kWh.
[1] https://www.energie.web.de/ratgeber/verbrauch/stromverbrauch...