hertfordnc
New Member
I've read a lot, watched a lot of videos and done a lot of math and this is where i put it all together and you tell me the fatal flaws, or you tell me I'm an idiot. It;s OK, i can handle it.
My current average daily load is 60kwh, I just got one EV (bolt) and i plan to get another. charging two EVs for our usage brings it up to 80 kwh (i used miles/3.5)
I know, the normal thing is to build a system that does some of the work and sell the excess back to the grid but my state allows the utility to buy it back for .03/kwh and resell it for .12/kwh and i think it will only get worse.
I figure the only way to save any money is to make almost all the power myself and just use the grid as a backup.
Theoretically, i think that would take 60 panels in the 300 watt range and the 30 kwh server battery from Signature Solar
Of course there is a lot of room to shrink that 80Kwh/day number- we use an electric stove that's going to be converted to gas. The heat pump could be more efficient. Other things could be tightened up a lot. But for now we're a busy family, we cook a lot and never give a though to energy conservation.
Yes, i understand that matching the system to my average daily usage will leave a lot of gaps on cloudy winter days.
My thinking is that the utility powers a battery charger and the battery powers the house, Then if that fails, a transfer switch puts the whole house back on the grid.
So how far am i from reality?
My current average daily load is 60kwh, I just got one EV (bolt) and i plan to get another. charging two EVs for our usage brings it up to 80 kwh (i used miles/3.5)
I know, the normal thing is to build a system that does some of the work and sell the excess back to the grid but my state allows the utility to buy it back for .03/kwh and resell it for .12/kwh and i think it will only get worse.
I figure the only way to save any money is to make almost all the power myself and just use the grid as a backup.
Theoretically, i think that would take 60 panels in the 300 watt range and the 30 kwh server battery from Signature Solar
Of course there is a lot of room to shrink that 80Kwh/day number- we use an electric stove that's going to be converted to gas. The heat pump could be more efficient. Other things could be tightened up a lot. But for now we're a busy family, we cook a lot and never give a though to energy conservation.
Yes, i understand that matching the system to my average daily usage will leave a lot of gaps on cloudy winter days.
My thinking is that the utility powers a battery charger and the battery powers the house, Then if that fails, a transfer switch puts the whole house back on the grid.
So how far am i from reality?
