Living in Arizona, I have enough sunshine to charge an electric mower with solar panels. Alas, I no longer have a yard to mow anymore.
However, back in Houston, my neighbor had an electric mower and it did a fine job. I can't recall what brand it was but I'd say that electric mower technology has gotten to where an ordinary suburban lawn can easily be mowed by one. BTW, my neighbors mower was 6 years old or older and still working fine when we moved to Az, so they appear to hold up well too.