Green Renewable and Alternative Energy Sources

can some one tell me the postives and negatives of green energy
Than You
Best Answer will get 10pts
Thank u
will prob b best answer
lots of detail
this is just what i needed
i just need 2 wait for 4 hours
Wow these are both really good answers
i dont know which one 2 pick 4 best answer so i will let the public vote

If energy is truly green, we likely accept it without much debate.

But when a green energy has any environmental downside, it can be opposed very strongly, even by Greens. For example, Wind energy… we want it but not in my back yard. We want to have giant turbines a km or more away so that we can not hear them even when they are operating at maximum capacity. We do not want them placed close to bird flyways. We do not want the visual disruption of man made and moving devices cluttering up the landscape.

But people who run electric grids have very different reasons to object to large amounts of wind power. Wind power does drop to very nearly zero output, so someone on the grid must provide an alternative power source, be it coal, oil, gas, or very variable nuclear. This means we must have unused capacity to generate, just sitting idle for the time the wind does not blow.

To use wind extensively we would need to use intelligent electric panels that turn loads on to use up low cost wind when it is available, and off when it is not.

Solar electric has far fewer real enemies. There are no birds being killed, no noise pollution, and wonder of wonders, it supplies a predictable amount of power right when it is needed most, during the daytime. That fits in very well with the needs of the grid, allowing the grid to operate with even less surge capacity.
But solar electric power, thus far has been more costly than most any other energy… the cost of the collectors and the area they must occupy are both very large.

Bio fuels be it bio diesel or ethanol or methane from manure require consumption of resources that may be needed to feed a hungry world. This could be a critical balancing act. Our free market system may not have the wisdom to feed people in preference to feeding engines.

Water power comes in a lot of different forms, and some of those forms have a lot of opponents, particularly when the form causes rivers to be dammed, flooding large areas of good farmland.

Most alternate energy strategies can be improved to eliminate most of the problems people object to, if developers of those systems would just pay some attention to solving the problems!