About the only practical way solar panels could work would be to
offset the amount of conventional electricity required; probably by
alternative means. Low-drain devices, battery backups + generation.
Fuel-cells that 'strip electrons' very efficiently; & so on. Think different?
Consider the 'high arctic' with six months of no solar. And great need
to generate power (and heat) ~ since water is solid at -20°F to -40°F?
'OFF-GRID' & then, there's really off-grid; where you haven't anything.
There had been several smaller towns in Europe who went energy
efficient. And between super insulation and better technologies;
were able to use batteries, and small fuel generators to run houses.
Including water pumps, air circulation, heating, cooling. In tiny form.
One three cylinder car engine, ultra modified, ran incredibly well and
did 'everything'. Efficiently. A whole subdivision was like that, there.
Read about that innovation in mid 1980s. ~ Didn't catch on 'over here.'
Where higher amperage devices are main stream, no efficiency happens.
Good luck & happy trails!🐌|🐢