Just a curious thread on your ROI (Return on Investment) from installing your DIY solar setup?
My setup is:
EG4 18Kpv x 2 @ $10794.94
24 x 530 Adani Panels @ $3120.00
Solar Rack: $1000~
Solar Wire (500Ft): $499.10
Aluminum 2-2-2-4 (125ft): $209.99
Aluminum 2/0-2/0-2/0 (125ft): $373.75
200amp Double Throw Switch $989.23
125amp Grid Combiner Panel: $55.52
100amp Breaker: $80.61
50amp Breakers x 2: $33.96
Generator Combiner Panel: $55.52
60amp breakers x 2: $37.74
200amp Grid Out Combiner Panel: $187.85
60amp breakers x 2: $37.74
3/0-3/0-3/0 copper meter to double throw and back to main panel wire: $396.98
AOLithium Batteries x 4: $4194.00
EG4 6 Slot Rack: $549.00
2/0-2/0-2/0 Copper Welding Cable: $103.88
EG4 600amp Busbars x 2: 79.98
Misc Lugs, Crimper, Shrink tube, Ferrules: $175.00
Cat5 300ft: $75.00
IMO Switches x 2: $198.22
DC Breakers and 4 slot box: $98.22
Misc Conduit: $395.55
Warning Stickers: $25.66
Permits and Inspections: $175.00
Net-metering agreement and NCUC (Utilities Commission) permits: $250.00
Total Investment: $24,192.44~
Here is my energy usage 2022-2023 (3 women in the house):

Toying with install and low power panels mounted on wood:

After everything is installed and net-metering agreement finally completed (as of 4/8/2025):

Average energy bill: $300.00 monthly.
Last month's bill dropped to $166.00 but I was not back feeding, we will see next month what happens.
So, $24,192.44 / $300 = 80.5 months (at net zero.) but realistically I would assume about 100 months for rain, clouds, etc.
Duke Energy will credit me 0.03 per KWH on my bill only. There will always be a minimum of $14.00 for connection fee even if I produce more power than I use (according to Duke rep). I am hoping to generate enough credit to float through the winter and still have a negative bill. They also said if I produce more than I use and the credits pay for the bill then the remainder just rolls to the next months bill.
I am adding 10 x 530w panels to the roof of my detached garage and it faces due east but at least I'll get a few more KW during the morning and mid-day.
My setup is:
EG4 18Kpv x 2 @ $10794.94
24 x 530 Adani Panels @ $3120.00
Solar Rack: $1000~
Solar Wire (500Ft): $499.10
Aluminum 2-2-2-4 (125ft): $209.99
Aluminum 2/0-2/0-2/0 (125ft): $373.75
200amp Double Throw Switch $989.23
125amp Grid Combiner Panel: $55.52
100amp Breaker: $80.61
50amp Breakers x 2: $33.96
Generator Combiner Panel: $55.52
60amp breakers x 2: $37.74
200amp Grid Out Combiner Panel: $187.85
60amp breakers x 2: $37.74
3/0-3/0-3/0 copper meter to double throw and back to main panel wire: $396.98
AOLithium Batteries x 4: $4194.00
EG4 6 Slot Rack: $549.00
2/0-2/0-2/0 Copper Welding Cable: $103.88
EG4 600amp Busbars x 2: 79.98
Misc Lugs, Crimper, Shrink tube, Ferrules: $175.00
Cat5 300ft: $75.00
IMO Switches x 2: $198.22
DC Breakers and 4 slot box: $98.22
Misc Conduit: $395.55
Warning Stickers: $25.66
Permits and Inspections: $175.00
Net-metering agreement and NCUC (Utilities Commission) permits: $250.00
Total Investment: $24,192.44~
Here is my energy usage 2022-2023 (3 women in the house):

Toying with install and low power panels mounted on wood:

After everything is installed and net-metering agreement finally completed (as of 4/8/2025):

Average energy bill: $300.00 monthly.
Last month's bill dropped to $166.00 but I was not back feeding, we will see next month what happens.
So, $24,192.44 / $300 = 80.5 months (at net zero.) but realistically I would assume about 100 months for rain, clouds, etc.
Duke Energy will credit me 0.03 per KWH on my bill only. There will always be a minimum of $14.00 for connection fee even if I produce more power than I use (according to Duke rep). I am hoping to generate enough credit to float through the winter and still have a negative bill. They also said if I produce more than I use and the credits pay for the bill then the remainder just rolls to the next months bill.
I am adding 10 x 530w panels to the roof of my detached garage and it faces due east but at least I'll get a few more KW during the morning and mid-day.