frontpage Posted by f12_26 | Staff • Last Sunday
Jul 6, 2025 11:44 PM
Item 1 of 2
Item 1 of 2
frontpage Posted by f12_26 | Staff • Last Sunday
Jul 6, 2025 11:44 PM
ECO-WORTHY 9840W Solar Kit (24 Panels, 10kW GroWatt Inverter, 8x 100Ah LP Battery)
+ Free Shipping$8,800
$10,000
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1 - Yes, this will provide power to your house from battery and fall back to grid (or grid+existing solar) when low on battery.
2 - No, you don't need a transfer switch, that's what the "hybrid" in off-grid inverters means. The inverter sits BETWEEN the grid and your house.
3 - 40kwh is pretty huge and will likely run everything in your house 24/7. (but! see #4):
4 - KWh is ENERGY, KE is POWER. Energy is how much you use in a day/month/etc. Power is how much you use in an instant. So, while 40kwh is lots of energy, 10kw is a medium amount of power. You will likely be able to run a smaller central A/C, but probably not at the SAME TIME as an electric water heater or electric stove or electric dryer. You'll have to add up the power ratings of the devices to see which combinations will fit in 10kw at any given time (accounting for startup loads too).
5 - Everyone* in the US has split-phase which is what this inverter does. EDIT: It's unclear. Description says split-phase, inverter spec sheet says single phase. If it's single phase, you'll need an autoformer to get the neutral (easy).
6 - Racking can be easy (but kinda expensive if you're doing rooftop, and, you don't want to screw it up and have leaks or flying panels). Ground mount can be as simple as putting down some weed stop fabric and lying the panels flat on top of it.
7 - Do be careful, 500vdc can do some serious damage both to you and to flammable things nearby. It's not hard, but do your homework before messing about.
8 - Yes, this qualifies for any tax incentives (really anything is if you claim it, and this would satisfy an audit).
9 - No, your power company or permit office doesn't need to know, it's all "downstream" from them (and removable if needed).
10 - As such, this does NOT backfeed the grid, but that's what the battery is for. EDIT this model MAY offer backfeed optionally, but you don't have to.
11 - I don't know what this inverter supports as far as bypass current, meaning, how much grid power can go THROUGH it once you get past that 10kw. That would inform whether you could run EVERYTHING aim your house through it (like having a 40 amp main!) or whether you'd need a smaller subset of your house (like excluding an electric water heater or stove). Of course you could just make sure to not charge the car while running AC or things like that. EDIT: anyone know which exact GroWatt model? Maybe this: https://signaturesolar.
Long story short, this is a pretty good turnkey setup. You can do cheaper with DIY, but you'd need a lot more knowledge and tolerance for risk.
Finally, the setup with grid (and/or with existing grid-tied solar) is as follows:
Meter Main -> (existing grid-tie solar) -> high loads panel (unbacked up) -> GroWatt INPUT -> GroWatt Output -> Backed up loads Subpanel -> loads.
The hybrid inverter will have settings that allow you to switch whether the battery is used all the time (falling back to the grid when low) or only in a power outage. Even when using the grid, it will "add" your solar production to the loads (thus subtracting from your grid usage). All of this is automatic and seamless, you'll likely never notice again if your power goes out, it's that fast.
EDIT: according to the page, it is a 240v single phase (not 120v single phase) but one user says it is a 240v split phase. I am not sure which one it is as I never work on this particular inverter. If it is a single phase 240v, you may need to get a single phase voltage splitter (example: Victron Auto transformer) to work with U.S. grid and U.S appliances. Since this is a hybrid inverter (assuming it is), you will still need a manual transfer switch for safety and maintenance reason.
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That's a very vague question with not enough information
Our community has rated this post as helpful. If you agree, why not thank ChadP2005
- My energy calculations (using pas electrical info) i use about 20.84 kW daily. Does this mean I need to purchase 2X 10kW Growatt Inverters?
- Can the Growatts output 240VAC - do you need to put them in parallel?
- Are the Growatts hybrid inverters meaning I can hookup to grid and take part in net metering/selling back to electric company?
- Can the Growatts accept - solar + grid + generator input?
- Who makes the solar panels - I went on Eco-Worthy website and they don't list 410W panels - are they 3rd party? Is there a link to the panels efficiency - performance - warranty - etc?
- What does Ver 3 for the batteries mean? I did watch youtubes on this battery - abd I know that ver2 added a larger circuit breaker and a redesign). Does ver3 mean UL listed?
- Has anyone had luck installing Eco-Worthy by an installer if permits are required?
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If you are not an electrician, then you will probably need professional help to install this system. Not just an electrician but roof or ground installation of the solar panels.
Our community has rated this post as helpful. If you agree, why not thank bogelo2
EDIT: according to the page, it is a 240v single phase (not 120v single phase) but one user says it is a 240v split phase. I am not sure which one it is as I never work on this particular inverter. If it is a single phase 240v, you may need to get a single phase voltage splitter (example: Victron Auto transformer) to work with U.S. grid and U.S appliances. Since this is a hybrid inverter (assuming it is), you will still need a manual transfer switch for safety and maintenance reason.
Contact your tax professional for clarification. YMMV from state to state.
For what it's worth, this inverter appears to be a 240v split phase. Just FYI.
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