Most reacted posts

I have about 20k sunpower panels ($7800), 2 sma 7.7 inverters ($3400), disconnect switches, wiring ($900), 2 ground mounted structures ($3500). Misc $1000. Total minus tax credit $11000. Produce yearly $2500 in electricity from net metering (kw $.10). System was paid off after 4 years. In...

Oh. Also installed mini splits 16 units (LG multi, about $1000 each), and reduced propane bill by $2000 a year. Natural gas savings about $800 a year. With tax credit, breaking even in 4 years. The repair estimate of the boiler steam system failure ($30k) was avoided and not included in this...

I would say that if you have a traditional connection thru your panel, the service line amp is a bottle neck and determines the capacity of your breaker. A 200a service entrance - 40 a breaker - 32 a inverter output - 7.7 kW. Or 10-15 K panels.

I have a 32A SMA (SB 7.7 41) inverter that is maxed out on 10K panels. Producing about 12.4K a year. The permitting and inspection was a pain for this system so I wonder if there is a way of squeezing out a little bit more without needing to go through another obstacle course. According to net...

I want to add to my current solar array from 10k to 15 k. Currently I have an sma sb 7.7 inverter. My panel only allows 40 amp breaker. It's it possible to combine 2 inverters and limit the combined output to 32A using some kind of pmw throughout the day so that I have increased production...

That makes sense. Thanks

So, like many others, my grid tie system was designed based on my power bills of the previous year. I build a 10k ground array with a 7.7 sma sb inverter, and passed inspection etc and been satisfied for 4-5 years, having a deficit in Jan and Feb months and a yearly production of 12-13 000 KW...

I just realized that I can probably run all my 120v load from my battery and a 6k hybrid inverter with 5k panels continuously, with exception of extended overcast, in which case, I could switch over to the grid, and recharge the battery. I'll keep all my 240v load separate with the net metering.

I would say, work your way back from your service entrance. Do you have a 200A entrance? (Most common). Do you have a double breaker opening in your breaker box for 40A? (Check if your panel happens to have a busbar rated at 200 A or higher perhaps 225 like many homeline panels) The answers...

Build 2 solar systems (10k, ground mount, string inverter 7.7 kW) and currently in the process of upgrading both to double and triple capacity. As net metering is involved, obtained permission from power companies, electrical permits, and inspections. One inspection required me to replace 300 ft...