old europe wrote:ican711nm wrote:A house roof full of solar panels in a region of 14 hours sun light--without clouds--cannot generate more than a small portion of the electricity the typical home consumes 24 hours per day (e.g., cooling & heating).
I disagree.
Take a look at commercial PV plants like
Beneixama:
160,000m² produce enough electricity for 12,000 households. That means that 13,3m² (or roughly 143 sq ft) of PV panels provide enough electricity for one household.
It appears to me that "a house roof full of solar panels" would be more than just 143 sq ft, and hence, probably enough electricity for a "typical home".
MY INTERPRETATIONS
Assuming:
1. Total Solar Panel Surface Area = 500,000 square meters;
2. Total Elecrtricity Production = 30 million kilowatt hours per year;
3. Meets the Needs of 12,000 households;
4. Each Texas household needs 1,000 kwhs per month or 12,000 kwhrs per year.
Then together those Texas households would require per year 12,000 kwhs x 12,000 = 144 million kwhs per year.
A production of 30 million kwhs of the needed 144 million kwhrs = 30/144 = 0.20833 of what those 12,000 households need.
To satisfy all of the needs of those 12,000 Texas households, the required surface area of those solar panels would have to be increased to = 500,000 / 0.20833 = 2.4 million sq meters.
If all those solar panels were to be distributed to the roofs of those 12,000 Texas households, that would amount to 2.4 million / 12,000 = 200 sq meters per Texas Household.
BUT what if that 144 million kwh production assumed 100% unclouded daylight, 365 days per year, when in Texas there is actually only an average of, say, 25% unclouded daylight, 365 days per year? Then 4 x 2.4 = 9.6 million sq meters of solar panels, or 800 sq meters per household, would actually be required to generate the required 144 million kwhs per year.
That of course does not include the amount of electricity storage that would be required to provide the needed electric power 75% of the time for heating, cooling, et cetera. Battery or equivalent electricity storage space, would be substantial. My guess is it would require at least an additional 800 sq meters inside or outside the household.
This, old europe, is why I think I probably am misinterpreting the data you provided. I hope I am!