Why is it nessicary, with today's economy in the postion it's currently in, to use renewable energy sources; like solar panels?
How Solar Cells Work by Scott Aldous Inside This Article . Introduction to How Solar Cells Work 2. Photovoltaic Cells: Converting Photons to Electrons 3. How Silicon Makes a Solar Cell 4. Anatomy of a Solar Cell 5. Energy Loss in a Solar Cell 6. Solar-powering a House 7. Solving Solar-power Issues 8. Solar-power Pros and Cons 9. Lots More Information 0. See all Physical Science articles You've probably seen calculators that have solar cells -- calculators that never need batteries, and in some cases don't even have an off button. As long as you have enough light, they seem to work forever. You may have seen larger solar panels -- on emergency road signs or call boxes, on buoys, even in parking lots to power lights. Although these larger panels aren't as common as solar powered calculators, they're out there, and not that hard to spot if you know where to look. There are solar cell arrays on satellites, where they are used to power the electrical systems. You have probably also been hearing about the solar revolution for the last 20 years -- the idea that one day we will all use free electricity from the sun. This is a seductive promise: On a bright, sunny day, the sun shines approximately ,000 watts of energy per square meter of the planet's surface, and if we could collect all of that energy we could easily power our homes and offices for free.
well you can save money over time even though the initial costs are quite high. Solar PV will allow you to not be subject to electrical rate inflation, which is averaging at about 6% per year. Solar also is better for the environment, so it gives you piece of mind.
They are not necessary, and you don't have to use them. However, the benefit of using solar panels is that you can make your own electricity at no cost. Yeah, of course, you need to spend some cash to build those panels, but once they are there, they will work like a charm, giving you free power.
Using solar panels and a converter system will reduce your electric bill, more panels +more reduction down to 0.00, even more and the power company has to pay you for your excess at premium prices. It's the law.It's not necessary but but useful.
If you're asking from an individual standpoint, I'd say it's an individual decision, and no, it's not necessary, any more than it's necessary to buy milk at Costco instead of 7-. If an individual is facing the tradeoff of paying rent or eating, solar panels won't even make the list. On the other hand, if one has money, the best time to buy just about anything is when the economy is bad, because then prices are low, competition is fierce, and installers are hungry for work. If your question is more, why should we as a society use solar panels, that's forward looking. Why didn't GM design and agressively market a Prius-like hybrid 0 years ago? Looking back, they should have.
