agree, for years also been using generator in case of brownout, pero tagbaw na man gud ko sa baho and kasaba ani aside from guilt of contributing to currently felt global warming, mao’ng nangita ko ug alternative. businesswise, i also have considered payback period, but on the other hand, nahuna-huna sab nako nga gamit ra man ‘ni sa balay, i’ll just think of it as personal use investment, para sa akong living convenience. pareho kun mopalit ‘ko ug moderate nga house, say worth P2.0M, granting nga ga rent lang ‘ko ug apartment before for about P12k per month – nya assuming mo down ‘ko sa balay ug P400k (20%), ang balance nga P1.6m ako i-amortize at about P12.5K+, moabot gihapon ug 30 years before maimpas, nya including interest, total payments would be P4.5m+ instead of only P1.6m (assuming fixed ang interest rate for the whole term). a lot of us normally go for this kay sa magsige lang ‘ta ug rent for many years to come, nya atong monthly cash out tu-a ra sa rent instead of ma-ato na balay in the future bisan dugay-dugay. halos pareho lang ni sa solar ug wind power investment. assuming daily gamit ko 6 energy-saving lamps 5w for 6 hrs.; 2 electric fan 60w for 10 hrs.; 1 tv 65w for 6 hrs.; 1 desktop computer 100w for 2 hrs.; 1 washing machine 300w for 1 hr. and 1 stereo component 50w for 2 hrs., total monthly kilowatt hour consumption would be about 71. at P8.699360 per kwh grid rate, total monthly billing would be around P618.52. based on my study, this load set needs 5 solar panels 100w – P110,000.00; 1 charge controller – P8,200.00; 5 pcs. deep cycle battery – P34,500.00 and 1 power inverter – P6,400.00 or a total equipment cost of P159,100.00, excluding cost of simple installation which I may do it myself and the very minimal future periodic maintenance. i’ll then have no monthly obligation to the power company for the years to come, add this amount to my house monthly amortization and at the same time contribute to the universal campaign of a greener mother earth.