From what I have read the costs are/were greatly influenced by mismanagement. With that in mind the true cost will be well hidden. It might even be therorized that deliberate mismanagement could be of benefit for some. A practice that has been used before. Breakdowns of the hydro and nuclear installation costs would be nice.
You might also note that the original post was about solar heating. There was no electrical power generated. As a new concept there would be design and infrastructure costs. All these come up front. You have not provided any solid figures for return on investment.
The exception would be a limited distribution grid with very limited base load generation and limited hydro electric generation that was mostly "run of River". No nuclear base load and no coal or NG base load or load following capacity to generate power at 4-6 cents per KW .
With wholesale grid rates of 25+ cents due to the bulk of generation capacity being $$$ imported diesel fuel operating $$$ reciprocating or $$$ gas turbine prime movers.
Then sure it makes sense to use solar or wind when ever possible to enable shutting down some and throttling back the remainding diesel gensets on standby. Still need a bank of "base load " dirty diesel generation spinning reserve to also provide electrical distribution grid frequency and voltage .
May I ask. What is your area of expertise? What groups,clubs or organizations that you belong to or contribute to? I am trying to understand and relate here.
Have you read Trillium Farm's post ?
Contribute ? Why would anybody want a contribution from wind and solar in Canada or the US ?
Wind is not reliable . Wind operates at 1/3 of nameplate capacity . Wind does not produce Monday through Friday from dawn to 2 hrs after dusk. Wind operates anytime including nights and weekends.
Solar is even more over priced than wind.
Why so certain that power must absolutely have to be generated by wind and solar ? Why? What is wrong with clean power from hydro electric and nuclear which is clean and cheaper ?
If you were a farmer growing corn and only being paid $4.50 a bushel if there is a market for it. Yet your neighbour can sell every kernel of corn he can produce and obtain $12.00 a bushel. How is that possible ?
Figures for return on investment ? I suppose all the $$$ in the decommissioning fund, all the pension funds, all the real estate , all the generating equipment and all the transmission equipment . With no debt unless a capital project is being built of overhauled. Then the debt is paid from the operating budget.
Is there some reason to prefer unreliable power vs reliable power that costs less?