To power a whole house, the ECO-WORTHY 10kW system bundles panels, a split-phase inverter, and certified lithium batteries. Want a system with zero wiring? The EcoFlow Delta Pro all-in-one is plug-and-play. Starting small or on a budget? The ECO-WORTHY 400W system is an expandable foundation.
How We Picked
An off-grid solar system is only as good as its weakest component, so we looked for systems with correctly matched panels, controllers, batteries, and inverters — plus the safety certifications (UL 1741, UL 1973/9540A) that matter when you're storing kilowatt-hours at home. We chose three at different scales and budgets: a whole-home wired kit, a plug-and-play all-in-one, and a small expandable starter. For just the bundled panels-and-controller route, see our best solar panel kits guide.
1. Best Whole-Home: ECO-WORTHY 10kW Complete System
ECO-WORTHY 10kW Complete System (9.36kWh/day)
ECO-WORTHY
- 12× 195W N-type panels (2,340W) + 10kW 120V/240V split-phase inverter + 2× 48V 100Ah lithium batteries
- ~9.36kWh per day — runs AC, fridge, microwave, and 240V appliances
- UL 1741 inverter; UL 1973 & UL 9540A certified batteries
- Parallel up to 6 units (60kW); WiFi/Bluetooth monitoring
- N-type 18BB panels at ~25% efficiency, IP68, 30-yr panel life
Why we picked it: This is a genuine whole-home system in one box — enough panels and storage for ~9.36kWh a day, and crucially a split-phase inverter that runs 240V appliances most portable units can't touch. The UL-certified inverter and batteries are the reassurance you want when storing this much energy indoors. Best for a cabin or house going fully off-grid; have an electrician handle the panel tie-in.
2. Best All-in-One: EcoFlow Delta Pro (3.6kWh)
EcoFlow Delta Pro + 400W Panel
EcoFlow
- 3.6kWh LiFePO4 power station + foldable 400W solar panel
- 3,600W output across 15 outlets and ports
- No wiring and no electrician — plug-and-play system
- Full solar recharge in ~3.5 hr with 3× 400W panels
- App control over charge, output, and battery settings; 4.4★
Why we picked it: Not everyone wants to wire a battery bank. The Delta Pro is a complete system you unbox and use — 3.6kWh of storage, a foldable panel, and an app — with no controller to size or inverter to mount. It won't run 240V loads or a whole house, but for a tiny home, workshop, or serious backup it's the lowest-friction way to go solar. Best for renters, beginners, and anyone avoiding an install.
3. Best Small System: ECO-WORTHY 400W
ECO-WORTHY 400W System (with 40A MPPT)
ECO-WORTHY
- 4× 100W mono panels + 40A MPPT controller + Bluetooth + Z-brackets
- ~1.6kWh per day — add your own battery and inverter to complete
- MPPT tracking up to 99%, ~98% peak conversion
- IP65 junction box; withstands 2400Pa wind / 5400Pa snow
- Plug-and-play cables with Y-branches; 4.3★
Why we picked it: A great small off-grid solar system to learn on and grow from. You get quality panels and an efficient MPPT controller (far better than the PWM units in cheap kits), then add a battery and inverter sized to your needs. At ~1.6kWh a day it covers lights, a 12V fridge, and devices in a cabin or van. Best for budget builds and first-timers planning to expand.
Comparison Table
| Pick | System | Solar | Storage / Output | Best for |
|---|---|---|---|---|
| Best Whole-Home | ECO-WORTHY 10kW | 2,340W | 9.36kWh + 10kW (240V) | Powering a house |
| Best All-in-One | EcoFlow Delta Pro | 400W | 3.6kWh + 3,600W | No-wiring plug & play |
| Best Small System | ECO-WORTHY 400W | 400W | BYO battery + 40A MPPT | Cabins / starter builds |
What to Look For
What's actually included. A true system has panels, controller, battery, and inverter. "Systems" that omit the battery and inverter need extra purchases — read the parts list.
120V vs 240V. Only a split-phase inverter runs 240V loads like a well pump, dryer, or central AC. Whole-home systems need it.
Battery storage. Size kWh to your daily use plus a reserve for cloudy days; LiFePO4 with UL 1973/9540A is the safe standard.
Expandability and cost. Look for parallel-capable inverters and room to add panels or batteries, so the system grows with your needs.
Bottom Line: Which Should You Buy?
For a whole house: the ECO-WORTHY 10kW system — split-phase power and certified storage.
For zero wiring: the EcoFlow Delta Pro all-in-one.
For a small budget build: the ECO-WORTHY 400W system.
Ready to buy?
Jump straight to our top picks on Amazon — prices shown at click-through.
Frequently Asked Questions
What is included in a complete off-grid solar system?
Four parts: solar panels, a charge controller (usually MPPT), a battery bank, and an inverter for household AC. Whole-home kits bundle all four; smaller "systems" may include only panels and a controller, leaving you to add a battery and inverter.
How much does an off-grid solar system cost?
It scales with capacity — a few hundred dollars for a 400W starter, one to three thousand for a plug-and-play all-in-one, and several thousand for a complete 10kW whole-home system with split-phase inverter and lithium batteries. Budget by daily watt-hours, not panel count.
What size off-grid solar system do I need?
A 400–800W system suits a cabin or van; a 5kW system covers a small efficient home; a 10kW system with a large battery bank handles a full house including 240V loads. Size storage to ride out cloudy days.
Can an off-grid solar system power a whole house?
Yes, with a 120V/240V split-phase inverter, enough battery storage, and enough panels to recharge it — like the ECO-WORTHY 10kW system here. Have a licensed electrician handle the main-panel connection.
What's the difference between off-grid and grid-tie solar?
Off-grid systems store energy in batteries and run independently of the utility. Grid-tie systems feed excess power back to the grid and usually go dark in an outage without battery backup. Everything here is built for off-grid independence.
Related Guides
How We Research
Picks are based on manufacturer specifications, current Amazon availability, and patterns across verified owner reviews. System contents and certifications vary by listing — confirm the current specs at the retailer before buying.
Safety note: Whole-home off-grid systems involve high-voltage DC, large battery banks, and 240V AC. Installation and any connection to household wiring should be done by a licensed electrician to local code.