| monocrystalline solar panel | 2 |
| photovoltaic solar panel | 2 |
| single solar panel | 2 |
| individual solar panel | 1 |
| rooftop solar panel | 1 |
| watt solar panel | 1 |
| space | 0.40 |
| full sun | 0.30 |
| the end of the building | 0.25 |
| generate electricity | 0.80 |
| charge the battery | 0.73 |
| produce energy | 0.71 |
| convert sunlight | 0.71 |
| save money | 0.65 |
| produce less power | 0.64 |
| face south | 0.64 |
| face the sun | 0.64 |
| provide power | 0.64 |
| ensure maximum energy o… | 0.64 |
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| sunpower | 0.46 |
| framing small silicon c… | 0.27 |
| moving parts | 0.66 |
| efficiency | 0.48 |
| same specifications | 0.47 |
| sensor | 0.46 |
| a 10 year warranty | 0.43 |
| photovoltaic cells | 0.41 |
| long lifespan | 0.38 |
| battery | 0.36 |
| quality | 0.35 |
| an efficiency rating | 0.35 |
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| little maintenance | 0.67 |
| little | 0.54 |
| sunlight | 0.47 |
| direct sunlight | 0.46 |
| initial investment | 0.39 |
| regular cleaning | 0.37 |
| constant maintenance | 0.37 |
| more energy | 0.35 |
| maintenance | 0.35 |
| energy | 0.30 |
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| great way | 0.69 |
| light | 0.63 |
| bird proof | 0.56 |
| panel | 0.55 |
| mono silicon | 0.54 |
| device | 0.51 |
| other material | 0.51 |
| warrantied for 25 years | 0.51 |
| low maintenance | 0.51 |
| great investment | 0.50 |
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| silicon | 0.64 |
| crystalline silicon | 0.53 |
| glass | 0.50 |
| amorphous silicon | 0.40 |
| pv cells | 0.32 |
| natural element | 0.27 |
| silicate | 0.27 |
| wafer | 0.22 |
| installed | 0.73 |
| installed on the roof | 0.68 |
| connected in series | 0.66 |
| built | 0.66 |
| made | 0.64 |
| mounted | 0.63 |
| installed on rooftop | 0.63 |
| angled | 0.62 |
| made up of photovoltaic… | 0.62 |
| made in china | 0.62 |
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| shorter deployments | 0.35 |