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This is a follow-up from this post back in March: https://diysolarforum.com/threads/price-sanity-check-on-4000-watt-addition-to-existing-system.80975/ tl;dr; Wanted to add 4000w (+/-) to an existing system. Was quoted an arm and a leg. Suggestion from the installer was as follows: 10x Jinko...

(Typed all this up and lost it. So here's to round two!) Back in 2019 I had a 15kw system installed atop our riding arena. This included all permits, net metering agreements, parts, labor, installation, et al. Was really happy with the final product. That system has 44 Longi panels...

Thanks for all the info. Electrical schematic is attached. I believe the 'downstream' piece that's limiting us is the #1 THHN in the raceway and we'd need to switch-out a 70A breaker with an 80A breaker. The original intent was to add 5x DS3-S to the last (bottom) string that is currently only...

My 'napkin math' was ~$8500 knowing *nothing* about racking. I found my original quote from 2019 and they used 'Snap N Rack'.

Agreed on 'intended to hide things'. And the depreciation is confusing. I had that concern w/ him the first go 'round in 2019. Just too many numbers. But I ultimately paid $1.88/watt out-of-pocket in 2019, and I was happy with that number compared to the other quotes I received! For the...

I can get 255w Trina Solar panels from a local reseller/scraper for $90. Spec sheet is here, but I think the import piece is IMPP of 8.36A and ISC of 8.92A https://www.ecodirect.com/Trina-Solar-TSM-255PA05-255W-30V-PV-Panel-p/trina-tsm-255pa05.htm My charge controller is an EPEver Tracer4210AN...

One series-set of panels would be 60v @ 8.5 amps. These would face S-SE. The second series-set the same: 60v @ 8.5 amps. These would face S-SW. Parallel the two sets and it'd be delivering roughly 60v @ 17 amps to the SCC. And the SCC does it's magic/wizardry to step-down everything to...

Hey y'all. I've jumped into this DIY solar thing quite quickly (although I did have a 17kwh grid-tie system installed on top our riding arena four years ago and have been happy overall) but have a question about building my own battery. For sake of completeness and future posts/queries, here's...

Fantastic. Thanks! While I'm here, any recommendations for MC4 connectors? I prefer Amazon but would go elsewhere if so directed.

Our power company is Portland General Electric. So with the Hybrid system, it appears I would create a brand-new PV array (with zero microinverters) with whatever panels I wanted? Is that correct? And the 8kW output from the EG4 would 'backfeed' through a 40-amp breaker that I could install...