Although I have no idea about how computing power is concentrated these days. The reliance on central systems is very much the case, or I would say even worse.

Although I have no idea about how computing power is concentrated these days. The reliance on central systems is very much the case, or I would say even worse. Because we know have arguably vital services running online and depending on these datacenters. Most people use their computers as terminals, that need to be connected to large datacenters, through the internet so they can do the things they want, from watching cat videos, to listening to their favorite songs to shopping or writing office documents on online productivity webapps. Also renewable energy projections don't really support that view at all. Renewable energy costs are plateauing, as with Li-ion batteries (2022 was the first year that the average cost of batteries haven't dropped since the BNEF started their analysis in 2013). And with the need for more energy storage, more transmission capacity, long term storage, flexible demand systems. The grid is going to be more needed than ever.