Help Needed with Complicated Solar Layout

[bcroe]

I thought about tilting my E and W facing panels, which could further separate their times of peak production and reduce clipping. However, that would require greater spacing between panels to avoid shadowing. My roof space seems to be too small to allow greater spacing between rows of panels.

That would work well, it has been working well here for years. But it does take some space. Bruce Roe


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[ButchDeal]

A SE support engineer told me that if I connect a battery DC-DC via a Storedge interface to an appropriate SE inverter, it can store excess energy produced above my AC output limits (10 & 7.6 kWh) and reduce my clipping.

From the above bar graph, I calculated the following amount of clipped energy for the 2 months with the greatest amounts of clipping;
For May with 3770 kWh production and 13.32% clipping = 502 kWh/mo ~ 16.2 kWh/day.
For July with 4090 kWh production and 8.45% clipping = 345 kWh/mo ~ 11.2 kWh/day.
If I connected 2 LG Chem RESU10 DC-DC to my inverters, I should be able to store rather than clip all excess energy. Is this logic correct?

If so, I hope that SE will soon release a StorEdge Interface for the SE10000H-US and SE7600H-US inverters, similar to the SESTI-3 and SESTI-4 interfaces that work with their SE7600 and SE10000 HD Wave inverters in Asia, Australia, New Zealand and Europe!

You can use the StorEdge SE7600A now as one system and the SE10000H as the other.
Have you checked to make sure you can get Net metering for you install? most locations in HI are highly restricted on net metering and are only allowing grid zero connections (zero feed in). This would give you a lot more clipping on your system without batteries.

[Steeler.Fan]

Net metering was terminated in Hawaii in Oct 2015. Their current feed in is $0.10/kWh with limited enrollment.

[ButchDeal]

Net metering was terminated in Hawaii in Oct 2015. Their current feed in is $0.10/kWh with limited enrollment.

and... does this house qualify for that enrollment or are you stuck with zero feed in?

they also have limits on how much you can feed in on most distribution trunks IF you even get approved to feed in.

[Steeler.Fan]

CGS+ pays $0.1055 and they still have capacity on my island.

[ButchDeal]

CGS+ pays $0.1055 and they still have capacity on my island.

ok it has been a year or so but the last I checked it was by distribution line. Many were at capacity.
If you go to the link and click on the "Check your Circuit" you can see that several sections are at capacity and thus only allowing grid zero connections.

https://www.hawaiianelectric.com/pro...id-supply-plus

NOTE it is important to get an accepted interconnect agreement early as they base approval on installed and approved connections.

[Steeler.Fan]

Their table lists 5-15% for my street, not good but could be worse!

[ButchDeal]

Their table lists 5-15% for my street, not good but could be worse!

so I would get an application in ASAP. That street could be sitting at 6% and they are not going to allow such a large system on a <= 5% circuit . You will be much worse off with a zero feed in setup.