4 ms·

It's obvious that energy sources based on local meteo conditions don't have 24/7 reliability. The question is: how much of that reliability do we need? What wou

It's obvious that energy sources based on local meteo conditions don't have 24/7 reliability. The question is: how much of that reliability do we need? What would be possible if we did forgo some? Most of our industrial processes are optimized for pure efficiency (optimizing asymptotic behavior with no regard to constants), which is biased towards high-energy, constantly running chains and immense infrastructure. These need reliability. If we optimize for more smaller workloads, which can start/stop depending on local conditions (and power source), then we loose some efficiency in the process but gain a lot in the simplicity of the energy supply chain (which may in the end translate in lower/comparable overall energy consumption).

cameldrv 6y ago
Electricity production in the U.S. is only about 2% of GDP, but basically every economic activity relies on electricity to function. Having very much of the electric supply be truly intermittent would create enormous costs elsewhere in the economy. If you're going to power the U.S. on renewables, you're going to need a lot of storage to get the needed reliability, so if you're comparing costs, you need to compare an equivalent end product.
belorn 6y ago
> how much of that reliability do we need? There are two guiding clues for that. One is to look at https://www.electricitymap.org/ranking https://www.electricitymap.org/ranking and see how Germany is doing. One can derive the weather based on how brown the color is. The second clue is energy prices swings more heavier as a country replaces nuclear with renewable. Heavy energy using industries can't double production when prices shrink by 50%, but they will stop production when costs exceed profits. This is already happening in Sweden when prices jumped by +70% this winter. It will be interesting to see what happens when the steel industry is becoming even more dependent on energy prices and will have to stop for weeks during the winter, and the effect that will have on employment contracts.

cameldrv 6y ago

Electricity production in the U.S. is only about 2% of GDP, but basically every economic activity relies on electricity to function. Having very much of the electric supply be truly intermittent would create enormous costs elsewhere in the economy. If you're going to power the U.S. on renewables, you're going to need a lot of storage to get the needed reliability, so if you're comparing costs, you need to compare an equivalent end product.

belorn 6y ago

> how much of that reliability do we need? There are two guiding clues for that. One is to look at https://www.electricitymap.org/ranking https://www.electricitymap.org/ranking and see how Germany is doing. One can derive the weather based on how brown the color is. The second clue is energy prices swings more heavier as a country replaces nuclear with renewable. Heavy energy using industries can't double production when prices shrink by 50%, but they will stop production when costs exceed profits. This is already happening in Sweden when prices jumped by +70% this winter. It will be interesting to see what happens when the steel industry is becoming even more dependent on energy prices and will have to stop for weeks during the winter, and the effect that will have on employment contracts.