No, I mean levelized cost per kWh (estimated retail, iirc).

Hydro is quite cheap, but it's not available everywhere and only scales to about 10% of global energy demand: https://dothemath.ucsd.edu/2011/12/how-much-dam-energy-can-w...

All other sources cost a good bit more than that. The US average is over 13 cents/kWh: https://www.electricchoice.com/electricity-prices-by-state/

Well you must be getting screwed over in the US. Québec hydro is 6 cents per kWh, at your house, and is profitable. State owned nuclear energy in Europe has comparable costs.

If only the transmitter and receiver for space solar is a very significant fraction of the cost per kWh shipped at your house with profits of nuclear or hydro it can't be viable.

13.3 cents (us)/kWh is the US national average for electricity cost, not any given region or source.

Canada's national average (this excludes the territories) is 10 cents (us)/kWh. Québec has the cheapest energy in Canada, primarily due to its proximity to hydroelectric sources, at 5.5 cents (us)/kWh. In parts of the US where hydroelectric is the dominant energy source, prices are comparable.

Including the territories Canada's average is 13 cents (us)/kWh.

Right, and total cost for SPS would be around 5 cents/kWh. The receiver is a small portion of that at 0.7 cents.

13 cents/kWh is the US national average including all sources and regions, according to the link I posted.