1. Solar energy is renewable energy that absorblight and heat from the sun. Solar energy has been use by human forthousands of years. The walls and floors of the house are design toabsorb energy during daylight so that thehouse kept warm during night. This conceptcalled passive solar energy design. Nowadays, the solar energy that absorb isconvert to an electrical energy by using solarcell or photovoltaic cell. It convert directly intoelectricity by the photovoltaic effect. 2. WAYS TO OVERCOME 3. 1. CONCENTRATINGSOLAR TECHNOLOGIES Parabolic trough technologies track the sunwith rows of mirrors that heat a fluid. Thefluid then produces steam to drive a turbine. Central receiver (tower) systems use largemirrors to direct the sun to a central tower,where fluid is heated to produce steam thatdrives a turbine. Parabolic trough and towersystems can provide large-scale, bulk powerwith heat storage (in the form of molten salt,or in hybrid systems that derive a smallshare of their power from natural gas). 4. Solar Power Tower 5. Dish systems consist of a reflectingparabolic dish mirror system thatconcentrates sunlight onto a small area,where a receiver is heated and drives a smallthermal engine. Concentrating photovoltaic systems (CPV) usemoving lenses or mirrors to track the sun andfocus its light on high-efficiency silicon ormulti-junction solar cells; they are potentiallya lower-cost approach to utility-scale PVpower. Dish and CPV systems are well suitedfor decentralized generation that is locatedclose to the site of demand, or can beinstalled in large groups for central station 6. 2. MAKE SOLAR ENERGYSYSTEM ECONOMICAL Will involve investment from big company. Competition between company to create acheaper and better to attract consumer. 7. 3. BY USING A MIRROR Using a bigger mirror can reflect light ontoyour panel over a longer period during theday so you do not need to track the sun, justface your panel and mirror to the south.