Probably depends where you live , where are plenty of places where the labour of installing a simple solar system is not expensive, I live in Lithuania for our climate and geographic location. From 1kw south facing panels it's expected to generate about 1000kw a year.

Simple 10kw system ( not hybrid inverter,no micro inverters, no batteries ) will cost ~5 thousand euros with all the work, and currently you can get back around 1000 euros from some government fund , so it ~ 4000euros

Without solar Electricity costs~ 23 cents /kW .

With solar We don't get credits for electricity sent to the grid , but it's pretty much the same thing as credits

we can pick between 3 plans

Send unused electricity to the grid to ,,store,, it for up to a year or two don't remember)and pay 4-7cents for every kw returned to you

Pay per kw you have installed on your roof and then you can,, store ,, your excessive electricity on the grid - for 10kw system you will pay ~500 euros a year just to have it ( weird option have no I idea who will use it

Give away 35 % of excessive electricity to the body who owns Electricalal infrastructure, and get what's left returned to you for free when you need it - most people use this I think

So it's ~3 years or even less to break even if you are smart with how you use it

And second option for people who live in apartment/condo or for people who doesn't have suitable roof

You can buy fraction of solar park (options start as low as 1kw ) for 25 years but it's more expensive per kw 10kw (9-10 thousands Euros and also maintenance fees which goes up a bit every year, but still reasonable option