EcoRenovator - View Single Post

kbhale · 04-21-10, 01:41 AM

I hope to have enough panels for a 300 watt micro-tie inverter. I pay $0.13 per KWH. If I am able to pump 4 hours of, lets say 250 watts in to the grid per day it would come to 250w x 4 = 1kwh. Which would equal $0.13. A 30 day month at 1kwh per day price, $0.13 x 30= $3.90. Year $0.13 x 365= $47.00.

Am I calculating this right?

The micro tie inverter is $95.00 on ebay. It would take 2 years to recover the investment but it would be 365 KWH per year that I'll not need to buy from a coal fired grid.

I known I can pump more Wattage. I just want to be sure my thinking on the math is right.

04-21-10, 01:41 AM	#1
kbhale Helper EcoRenovator Join Date: Jan 2010 Location: Evansville IN Posts: 88 Thanks: 0 Thanked 1 Time in 1 Post	micro tie inverter I hope to have enough panels for a 300 watt micro-tie inverter. I pay $0.13 per KWH. If I am able to pump 4 hours of, lets say 250 watts in to the grid per day it would come to 250w x 4 = 1kwh. Which would equal $0.13. A 30 day month at 1kwh per day price, $0.13 x 30= $3.90. Year $0.13 x 365= $47.00. Am I calculating this right? The micro tie inverter is $95.00 on ebay. It would take 2 years to recover the investment but it would be 365 KWH per year that I'll not need to buy from a coal fired grid. I known I can pump more Wattage. I just want to be sure my thinking on the math is right.