[JParris]

Only been around 15 years or so....

So, how could anyone accurately predict a life span of 25 - 30 years.

I offer there was never a 25 year life, it was sold as such to justify the installation expense over time.

So, recalculate return on investment numbers based on 15 yr life and see if it was as economically appealing to begin with.

[who_would_fardels_bear]

Let's say you bought panels 15 years ago and now find out that even though your panels still work, that the new ones are twice as efficient and it now makes sense to toss the old ones for the new ones.

Which is what's going to happen with EV's as well.