Looking at Putting a Grid Tied Roof Mount with IQ8+ Micro Inverters on 455 W 144 split cell 1Mx2M panels
on my smallish house in Cambria County Pa
NEC2017 is in place here
Local AJH is down on DIY roof Solar
My Electric supplier is Penn Elec, no TOU or other tiered usage here
upto 10 DC KW ipanels nstalled their review is fairly simple / with a $100 review charge
NEM is: 10.39 monthly customer charge / use grid as no cost "battery" until annual true up
then if I underproce vs my consumption I owe them $0.17/KWH grid power used same as If I didnt have PV
If I overproduce they pay at the "cost to compare" rate of $0.10 /KWH so a 7 cent spead per KWH
so not a totally horrible NEM
local grid is quite stable iirc one 4hr outage in the 9yr we've been here and a few shorter outages
so while I'd like a furnace battery UPS to keep the furby's happy its not cost effective,
and If I'm home my F150 is the Powerboost varient with 7.2KW of 120/230VAC available at the tailgate plus we have a 2KW 120VAC Yamaha Inverte Genset
Local installer that did a 19.6KW 3 small arrays ground mount for a former neighbor gave me a 3 tiered qoute
YES i know this is a DIY foruom, I'd Love to DIY this but its not feasibable to do so here and now as a grid tie roof mount
I "might " be able to DIY a small off grid ground mount later for power/yard tools batttery recharging
The per watts $ are net after Fed Rebate and are for a Fully Permited Utility Approved TurnKey Install, cash or non inIstaller Finacing, I keep the SREC 's
I'm planning on a cash purchase
A) 13 panels 5900 DC watts $2.33 / DC Watt estimated annual production on my site 6200KWH's
B) 17 panels 7735 DC Watts $2.09 / DC Watt estimated annual production on my site 8130 KWH's
C) 20 panels 9100 DC Watts $1.97 / DC Watt estimated annual production on my site 9560 KWH's
production estimate is lower than PV Watts estimates but thats installers "gaurenteed " production levels so he's going to lowball it a bit
Trying to decide the best sizing for us as its cheaper to over build for current usage than add more later
but self consumption has a better ROI than selling to grid
My current electrical consumpsion is right at 5MW per year with Wife off being a Granny Nanny, all heating loads are Nat Gas, cooking is gas/microwave
We're planning on adding AirConditioning either as Mini Splits or Central so I'm thinking that will add at least 2MW per yr
even if it does reduce the dehumidifier usage somewhat
Also figuringing that once we're retired and she's back home our consumption will go up as rght now I mostly charge small electronics at work
and rarely watch TV(actually unpluged right now), Wife does watch quite a bit and surf the Net when she can so Maybe add another 500-1000KWH per year?
We may go to a Plug in Hybrid for wifes next car but I have no Idea how much usage that would add
I'm planning on choice C) 20 panels barring compelling reasons otherwise
thats the max number I can fit on the roof with the larger format panels and I'd have to drop down to 60cell /120 splits to fit a higher covrage level but then between lower wattage per panel and the additional inverters needed, $ / installed DC Watt goes up
on my smallish house in Cambria County Pa
NEC2017 is in place here
Local AJH is down on DIY roof Solar
My Electric supplier is Penn Elec, no TOU or other tiered usage here
upto 10 DC KW ipanels nstalled their review is fairly simple / with a $100 review charge
NEM is: 10.39 monthly customer charge / use grid as no cost "battery" until annual true up
then if I underproce vs my consumption I owe them $0.17/KWH grid power used same as If I didnt have PV
If I overproduce they pay at the "cost to compare" rate of $0.10 /KWH so a 7 cent spead per KWH
so not a totally horrible NEM
local grid is quite stable iirc one 4hr outage in the 9yr we've been here and a few shorter outages
so while I'd like a furnace battery UPS to keep the furby's happy its not cost effective,
and If I'm home my F150 is the Powerboost varient with 7.2KW of 120/230VAC available at the tailgate plus we have a 2KW 120VAC Yamaha Inverte Genset
Local installer that did a 19.6KW 3 small arrays ground mount for a former neighbor gave me a 3 tiered qoute
YES i know this is a DIY foruom, I'd Love to DIY this but its not feasibable to do so here and now as a grid tie roof mount
I "might " be able to DIY a small off grid ground mount later for power/yard tools batttery recharging
The per watts $ are net after Fed Rebate and are for a Fully Permited Utility Approved TurnKey Install, cash or non inIstaller Finacing, I keep the SREC 's
I'm planning on a cash purchase
A) 13 panels 5900 DC watts $2.33 / DC Watt estimated annual production on my site 6200KWH's
B) 17 panels 7735 DC Watts $2.09 / DC Watt estimated annual production on my site 8130 KWH's
C) 20 panels 9100 DC Watts $1.97 / DC Watt estimated annual production on my site 9560 KWH's
production estimate is lower than PV Watts estimates but thats installers "gaurenteed " production levels so he's going to lowball it a bit
Trying to decide the best sizing for us as its cheaper to over build for current usage than add more later
but self consumption has a better ROI than selling to grid
My current electrical consumpsion is right at 5MW per year with Wife off being a Granny Nanny, all heating loads are Nat Gas, cooking is gas/microwave
We're planning on adding AirConditioning either as Mini Splits or Central so I'm thinking that will add at least 2MW per yr
even if it does reduce the dehumidifier usage somewhat
Also figuringing that once we're retired and she's back home our consumption will go up as rght now I mostly charge small electronics at work
and rarely watch TV(actually unpluged right now), Wife does watch quite a bit and surf the Net when she can so Maybe add another 500-1000KWH per year?
We may go to a Plug in Hybrid for wifes next car but I have no Idea how much usage that would add
I'm planning on choice C) 20 panels barring compelling reasons otherwise
thats the max number I can fit on the roof with the larger format panels and I'd have to drop down to 60cell /120 splits to fit a higher covrage level but then between lower wattage per panel and the additional inverters needed, $ / installed DC Watt goes up