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To design cost effective solar panels you have to get the most watts for the least $.
You don't necessarily want say 14% efficient cells because then you need so much glass, aluminium frame, they take up so much room and racking that the slightly higher efficiency panels are more cost effective.
Last time I looked a few years ago 30 to 33% efficient panels cost about 10x more than standard 22% panels. To go up 40% it was around 40x higher cost.
If the 34% panels were double the price it might be worth it.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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