|
Solar Cell/Panel | Wind Energy | Hydro | Fossil/bio-fuel |
|---|---|---|---|---|
| Installation | on the roof, on an open yard | on the roof, on a tower | nearby flowing river | any well-ventilated space |
| air pollution | no | no | no | yes |
| sound pollution | no | probably | probably | probably |
| efficiency | low | medium | medium | med-high |
| need constant maintenance | yes | yes | yes | yes |
| weather affected | yes | yes | maybe | no |
| energy source easy to produce | yes | yes | yes | no |
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