> If other sources meet demand 5% of the time, electricity costs fall and the energy capacity cost target rises to $150/kWh.
Battery storage is already well under $150/kWh!
Now you wanna store enough solar-generated electricity for when the sun doesn't shine, worldwide? My napkin math says that either the price per kWh will go up, or that some poor country with enough lithium will be "politically destabilized" soon.
For one thing they can use a bunch of tech that doesn't work well in cars (flow batteries for example).
And the price goes down because the primary constraint is production capacity. More demand means more factories mean cheaper prices. See eg the growth in manufacturing capacity in batteries and their price decreasing:
If you look at 2008, there was 6GWh of battery manufacturing in the world and 97% of it was in China.
In 2019, there was around 365GWh worldwide, split into: China (75%), US (9%), South Korea (7%) Europe (5%)
By 2023 we estimate there will be 1,230GWh worldwide: China (65%), Europe (10%), US (10%) and rest of the world (15%).
But none of these solve the issue of months long weather fluctuations and disasters entirely in regions where pumped hydro isn't viable. For that, grid flexibility (such as variable rate Al production and electrified steel smelting), gas or hybrid heating/cooling, generator backup for essential uses (minimal heating and medical facilities), and methane produced from electricity and biomass is the answer and the only reason it hasn't happened on its own is we don't price in the (absolutely massive) externalities of fossil fuels so they're marginally cheaper. We also need to cut the low hanging fruit that are responsible for most of the emissions either directly or indirectly (poorly insulated, overly large detached homes, cars, and cows).
About half for heating and cooling in EU, https://energy.ec.europa.eu/topics/energy-efficiency/heating... iirc 40% of that or around 20% of total was domestic -- it often looks small because it is broken dowm into two subsets of electricity and two subsets of methane use (and decreasingly kerosene) being for water and space heating. Detached homes use at least double compared to a row house (twice as many walls, but they also tend to be larger and have more windows) or far more than a similarly built apartment with one wall, and tend to be poorly insulated in places like the US.
Heating and cooling represents a lower proportion in the US for a variety of reasons (primarily driving/trucking and some differences in industry as well as a colossally wasteful military), but a huge amount is caused by cows, clearing land for cows, moving cows, cooling cow products, moving feed for cows, and producing fertilizer to grow feed for cows.
Unrelated, but detached home suburb design is also responsible for a lot of other emissions indirectly. Larger living space and fewer communal areas leads to more travel and more stuff. Things being spread out leads to low labour high emissions big box store stuff rather than local hand crafted and second hand markets and local in season produce. Transit and pedestrian hostile layout leads to more driving (and one car per person). Car dependent infrastructure leads to more trucking and less freight trains. Large centralised shopping centers like walmart leads to more uniform goods and just in time logistics which depemd on planes. Flight, trucking, driving and fossil fuel heating leads to more dependence on oil and gas. Oil and gas security is maintained by military activity which is responsible for a huge portion of emissions. None of this stops if you build a 5 over 1 and a train line or a medium density village instead of a suburb of course, but you make a small dent in every step.
I'm not convinced. I tried a back-of-the-envelope calculation, but there were a few too many variables, but I think the 1.5 billion smartphones sold each year edge out EVs (my main difficulty was comparing smartphone battery EV battery)
Here are volume weight prices by time for Australia, which has been doing a transition:
https://www.aer.gov.au/wholesale-markets/wholesale-statistic...
They increase at less than the rate of inflation!
Australia is the poster child of what not to do.
I'd take that headline with a grain of salt. A lack of investment in power generation because of unclear policy goals by the previous conservative government is the real issue - combined with another odd policy where long term gas supply export contracts meant it was cheaper to turn off gas plants than run them!
Basically the previous government wanted someone to build a new coal fired power station(!) but no commercial company wanted to do it and no investors could be found (coal fired stations just cost too much now). The then Prime Minster is famous for bringing a lump of coal into parliament to show how much he loved coal[1].
It's worth noting that no blackouts occurred.
Ironically, the state of South Australia also had a conservative government at the time but had a very pro-renewables policy (this is where the first Tesla big battery was) which took power prices from the highest in mainland Australia in 2018 to the lowest wholesale prices[2]
[1] https://www.youtube.com/watch?v=ea5bOaPkZpc
[2] https://reneweconomy.com.au/sa-renewables-surge-bringing-dow...