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151. The biggest single drawback of solar cells, then, is the need for storing two weeks' worth of power.

152. That was the dream of solar sailing, so beloved of both scientists and science fiction writers.

153. The belt provides vast material resources, vast amounts of solar power, and vast elbow room.

154. All the heavy materials came from junk spinning somewhere around in the solar system.

155. Solar Turbines is a subsidiary of Illinois-based Caterpillar Inc., which until recently has been involved in a bitter union strike.

156. Solar panels are a good investment for customers, who would otherwise use kerosene or rechargeable batteries for electricity.

157. The major difficulty with comparing solar panels is that manufacturers' output figures can not be compared.

158. The idea of travelling to other solar systems may sound far-fetched but scientists now see it as a real possibility.

159. So are the solar panels hovering above emergency call boxes along stretches of remote highways.

160. In addition to stimulating specific projects, a research centre for solar energy is due to be established.

161. As the day of the solar eclipse approached, Ellie received many invitations from well meaning friends.

162. Research on solar-cell design has recently shown us how to make extremely lightweight solar cells.

163. Now researchers analysing results from the Solar Maximum Mission satellite have reported detecting solar neutrons from flares two years apart.

164. Many men bought their own solar shower bags and camp beds.

165. Mars! The final pimple in our solar system!

166. Elongated solar array wings bracket the craft.

167. Neptune is the eighth planet of our solar system.

168. Bigger doubled his fist and struck his solar plexus.

169. Different powers of solar battery components produced on demands.

170. Introduced the solar battery type and the general characteristic.

171. The third kind of solar oven is parabolic cooker.

172. The solar heat obviously pressurized the car's closed cabin.

173. THERE is a story about a science professor a public lecture on the solar system.

174. Many photogenic auroras have been triggered from a solar wind stream that recently passed the Earth.

175. A sidereal day is about 4 minutes shorter than a solar day.

176. They even drove around the solar village in electric cars powered solar battery.

177. The third kind of solar oven is a parabolic parabolic cooker(sentencedict.com),(http://sentencedict.com) it.

178. For the solar radiation pressure reflectance, the T 3 model is introduced.

179. Solar light can send off ultraviolet rays, just like the sun does.

180. When solar energy transfer, the Power Point Tracking ( MPPT ) is used, this method enhances PV efficiency.