Eto storya. 2 years ago, sa sobrang mahal ng meralco for commercial use, nag-research ako at nag canvass ng alternative renewable energy. Turns out, the cost of RE, particularly solar energy, declines by over 10% per year. At the time, I figured to hook up a 2000-watt system (dating kinakabitan ng gen set dahil pinaka important circuit power-wise) running for 9-12 hours a day, kung ang cost ay mga 800 thou, break-even na with napocor power.Since 1M pa yung qinuote sa akin at that time and since naubos na ang budget ko, pinostpone ko muna. Recently, though, nag-canvass ako ulit. Guess what? Yung dating 1M cost, ngayon less than 600thou na lang!!!Kaya this summer, grineen-light ko na itong project na ito kasi tipid na, enviro friendly pa, scientific curiosity pa. BTW, 20 years ang warranty nung solar cells. Baterya lang ang replaceable kung sakali and 2-3 years ang expected life ng isang set (madami eh -- 10 yata).Ano sa tingin ninyo?