Ever wondered just how much surface area you would need to supply the entire world with all of its power needs using only energy collected from solar panels? Luckily for us the Land Art Generator Initiative have done all the math. Crunching the numbers based on our current and projected energy usage and using statistics grounded on the solar technology that is available to us today, they have created this handy map of what 2030 could look like. The map shows use distributed roughly proportional to use and weather patterns.
A related link in the article shows an alternative map based on offshore wind power.Link
- via coolinfographics
From the Upcoming ueue
, submitted by renderanything
The only benefit of solar is being "green". Solar is not cheaper, more hassle free, or convenient than the grid. Solar is a good idea if you live rurally or you want to impress your naive neighbors with how much you care about the environment. But that's it.
To top it off, the solar array required to power the whole house is far larger than people realize. The amount of cutting down on power use the average household would have to do is more than most would want. If everyone is working during the day and gone, you'll be using GRID power when you get home. Why? Because you don't have batteries! LMAO So while a system doesn't NEED batteries or a generator, lifestyles may dictate otherwise.
XZaapryca "The Amateur" (oh, I can spell too)
what you need for a solar system
grid tie inverter
combiner box (optional)
WOW do you see batteries in there?, or generators?
NO you dont, because the grid is your battery, and you dont need to knock the snow off it if you have a DE-ICER put on it.
YOU, as anyone can plaing see, are not the expert you with, and maybe you should have asked someone who really does know, and you shouldnt be talking as if you do know.
Yes I did stop watching tv, and yes I do have solar, I have enough power for the REST OF MY LIFE, can you say that?
Any of you arm-chair energy experts ever had a solar array for your home? I'm guessing no. The grid is cheaper, easier and with little to no servicing. Any of you guys ever go outside a few times a day to knock snow off your panels? How about check a few dozen batteries for corrosion and to top off the water? Let's not forget putting diesel in the generator so that when the batteries run too low you have some way of living, especially at night or when it's overcast for several days in a row. To top it off, you're paying three or more times for the power you've generated than if you just bought it from the grid.
Things are so easy for those who've never done it.
Of course, you need to double the area to account for night time, and double it again to account for non-sunny days, downtime due to maintenance, etc. At best you can collect about 0.19 kw per square meter per day. The U.S. uses 333 GW (that's 33 million KW). so I get an area of about 370,000 square kilometers, which is about the size of Montana. Hey - let's roof over Montana! How much could that cost?
Don't believe me? Cover you house with solar cells. It'll cost you round $20 k, and you might be just able to generate enough to power your home, at least some of the time, if you are very careful. Of course, homes account for only a percentage of our total electrical usage. And you'll also never make back your investment.
Siemens sells solar cells, right? That would explain a few things...