English Rose, the reason I only pay 46 pesos every 2 months is because I have one or two more panels than I need. If you are in DAC and paying very high rates for electricity the payback on photo-voltaic solar panels is quite short but if you are only paying for maybe 100 or 150 KWH per month you are being billed at a very small subsidized rate per KWH. And it does not make economic sense to buy solar panels. But like you, English Rose I want to generate as much power as I use and get charged the minimum rate of 23 or 24 pesos per month or now being billed every two months, paying twice that now that much.
So it may not make economic sense to buy those one or two extra panels, but I just had to get them