Renewables are a crock of shit that is recognizeable even though your kindergardeber but only care about them.
Renewables are not a crock of anything.
The problem is intermittency.
All electrical systems (at present) require a source of base load power. New Zealand provides much of their base load power from a renewable resource (hydro). In NZ's case they have increased the capacity to reduce the probability of the intermittent nature of rainfall to affect supply of power (to a large extent).
The problem with other renewable sources is that the energy is produced as something that must be used immediately (electrical energy) rather than in a form that can be stockpiled for future use (coal, gas, etc.)
The market seems to be moving toward battery storage. However this is currently a really expensive form of storage. Will it get cheaper, will it be replaced by some other method of storage, or will it be abandoned? I have no idea.
Some mention has been made of South Australia's problems. One contributing cause is the lack of certainty which is essentially preventing the building of any base load electrical generation. As base load capacity reduces, especially where existing base load generation is remote and dependent on long runs of overhead cabling, the risk of problems just continues to grow. Having a lack of control to the extent that rapidly available resources remain off-line during a loss of capacity event doesn't help.
Also not mentioned is that Australia's distribution networks essentially have a deal that allows them to become more profitable by spending more on distribution infrastructure. This has caused a huge increase in "wires and poles" costs, which now makes up a huge proportion of the cost of power.
What do I think will happen in the future? I think we're going to have a system where peak capacity may be less than peak demand. To "sell" this and to avoid blackouts, people (individuals and companies) will be offered deals to automatically reduce demand during peak demand. Consumers with battery systems may be asked to switch to stored power, or even to supply the grid. Large appliances (e.g. air conditioning) may be automatically be switched to a lower power mode.
Managing the electrical grid is likely to get more complex, and I would think that this will be an interesting area to get in to in the coming decades.
There is some talk that excess renewable energy could be converted to Hydrogen and injected into the domestic gas system. I remain to be convinced of the efficiency of doing this. One proposal I have seen involve the integration of an ammonia plant (to store energy in the form of NH
3).
Flow batteries are another interesting development, and are in use at some wind farms to even out supply.