My electrician friend just told me the other day that the sun very conveniently produces a 1000w/square meter at high noon. Solar panels have an efficiency of around 20% give or take. That is in direct sunlight at high noon. So at peak time of day you can produce about 200w/square meter of solar panel. That’s not a whole lot of energy so adding extra panel to the hood won’t yield a lot of energy but I guess every bit helps.