Newbie question for AHJ and grid owner

Discussion about adding energy storage to grid-dependent inverters using OutBack Power technology
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MJSullivan56
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My RE system: BOM
(12) REC alpha-series 370W solar panels (4.4kW)
(12) Tigo TS4-A-O optimizers
(1) Tigo CCA outdoor kit
(1) Outback Radian FPR-4048A-300AFCI pre-wired inverter/charger
(3) Fortress eFlex 5.4kWh batteries (16.2kWh)
(1) Outback RSI
(3) MidNite Solar surge protectors
(1) Midnite MNPV6-250 combiner
(12) Tamarack racking kits
(2) QBox Junction Boxes
Location: Boston MA

Newbie question for AHJ and grid owner

Post by MJSullivan56 »

I am about to begin Phase 1 of my Outback FPR-4048A + (2) Fortress eFlex 5.4kW system (no PV panels in this phase) which shall be used as a UPS/Microgrid for critical loads only. As such I wanted to ask this forum how I should describe this project to both my electrical contractor as well as the AHJ. Should I call this project an "Energy Storage System"?

Also given the limited scope of this phase, do I need to also contact my grid supplier? Or is that only necessary when feeding power back to the grid? (which I never plan on doing, even after adding PV panels in the future)

Anyway, just looking for the right terms to use for pulling permits and describing the scope of the project.

Michael

P.S. as you might imagine, phase 2 (early next year) would be to add 12 solar PV panels with Rapid Shutdown to the above mix
provo
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My RE system: 16 Evergreen EC-120 (4 strings, total 1920W)
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Grid connection, no selling back
Location: Sierra foothills

Re: Newbie question for AHJ and grid owner

Post by provo »

I would call it a UPS System. If you plan to have a backup generator you'll want to reassure them that you have no intention of "running the meter backwards".

I'd also be up front about your plans to add solar panels in a few months, and reassure them (again) that you'll come back for an additional permit at that time.

Around here, 14 years ago, I think that would've worked. Nowadays, or wherever you are, I'm not sure....
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Mike Curran
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My RE system: Outback - Garage roof (2007/2017):
- 8 (2x4) Evergreen 180's into one FM80 (2007/2020 - replaced MX60)
- 6 (2×3) ALEO S79-300's into one FM80 (2017)
- 2 grid-tied VFXR3524A-01's series stacked, replaced GVFX's (2020)
- 12 Surrette/Rolls 2V x 1766Ah (2007)
- Hub10.3, Mate3s, FNDC, RTS. Tigo ES maximizers on each PV module.

Westinghouse Solar - Barn roof: (2012)
- 30 (2x15) 235W panels with Enphase M215 microinverters, grid-tied

Outback Skybox - Barn roof: (2019)
- 14 Talesun 275W in series (DC array input to SB inverter/charger)
- 3 SimpliPhi 3.8 batteries, 48V, 225Ah total
- AC coupled input from 14 Talesun 275W, Enphase M215 microinverters

Battery systems operate in grid-tied, net metering w/backup mode
All self-designed and self-installed
Location: Chagrin Falls, Ohio

Re: Newbie question for AHJ and grid owner

Post by Mike Curran »

If all you're doing now is using the grid to keep your batteries charged, I don't think you need to tell your supplier anything. You're just adding an appliance that uses grid power.
https://ei.tigoenergy.com/p/pZXn7SZQyO45
https://enlighten.enphaseenergy.com/public/systems/Hctc107221
provo
Forum Emperor
Posts: 1283
Joined: Thu Jul 27, 2006 4:34 pm
My RE system: 16 Evergreen EC-120 (4 strings, total 1920W)
2 SimpliPhi 3.8-m-24V (150Ah each)
One FM80
One VFXR3524A
Hub 10
Mate3s
FNDC
Honda EU3000is generator
Grid connection, no selling back
Location: Sierra foothills

Re: Newbie question for AHJ and grid owner

Post by provo »

Mike Curran wrote: Fri Oct 01, 2021 5:24 pm
... I don't think you need to tell your supplier anything. You're just adding an appliance that uses grid power.
Excellent, I like that :grin: !
herringburdensome
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Re: Newbie question for AHJ and grid owner

Post by herringburdensome »

I don't think you need to notify your supplier if all you're doing currently is using the grid to keep your batteries charged. You're simply adding a grid-powered gadget.
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