Large homes
Fit still depends on property conditions, measured loads, and provider availability.
High-output off-grid equipment package
SunGoldPower SGR-12K20E Off-Grid Solar Kit
Equipment kit for off-grid and backup projects
Pair 12 kW of split-phase inverter capacity with 25.6 kWh of nominal storage and a 4.98 kW array for a carefully sized off-grid property.
Equipment reference price
Hardware reference
$11,946 equipment reference
Dated equipment scope only; installation, freight, site work, and other project costs may be separate.
ScopeReferenced equipment and listed components
Final priceRequires property evaluation, final design, and provider confirmation
Final pricing depends on:System designInstallation requirementsPermitsElectrical workLocation
- No purchase required
- Savings and runtime depend on design and use
- Final design required
Clear terms before you commit
- Free assessment
- Compare available systems
- Manufacturer information reviewed
- Final proposal depends on property evaluation
- Installation availability varies by location
The homeowner challenge
The problem this package is designed to solve
Remote homes, farms, and workshops can have several demanding 120/240 V loads but no dependable grid connection to absorb sizing mistakes or low-sun periods.
The proposed approach
How this package addresses it
The official SGR-12K20E kit addresses higher simultaneous-load needs with twelve 415 W modules, five 5.12 kWh LiFePO4 batteries, and a 12 kW 120/240 V split-phase inverter. The inverter can support demanding combinations of appliances only when the final design accounts for continuous power, motor starting, daily energy use, seasonal solar conditions, and reserve capacity.
Who it is for
Homeowners this system is designed for
Large remote homes, farms, cabins, workshops, and backup projects with a documented load plan.
Farms and rural properties
Fit still depends on property conditions, measured loads, and provider availability.
Cabins and remote homes
Fit still depends on property conditions, measured loads, and provider availability.
Workshops
Fit still depends on property conditions, measured loads, and provider availability.
Homes with high simultaneous electrical demand
Fit still depends on property conditions, measured loads, and provider availability.
Why consider it
Reasons homeowners consider this package
- Large 12 kW split-phase inverter
- 25.6 kWh LiFePO4 battery bank
- Complete referenced solar, storage, and power-conversion scope
- Supports planning for multiple simultaneous loads
- Expandable only within documented equipment limits
How it works
From available solar to useful home energy
These steps describe the intended homeowner experience. Actual flows and supported loads follow the commissioned design and operating settings.
- 01
Collect
Twelve solar panels provide approximately 4.98 kW of DC nameplate capacity. Real production varies with sun, season, temperature, shade, orientation, and system losses.
- 02
Store
Five LiFePO4 batteries provide 25.6 kWh of nominal storage for evening use and low-production periods. A reserve and backup plan are still important off grid.
- 03
Power
The 12 kW split-phase inverter supplies 120/240 V AC for the designed loads. Central air, well pumps, EV charging, and shop tools may be possible only after startup surge and energy-use analysis.
- 04
Manage
Off-grid success depends on matching daily use to seasonal solar production, monitoring battery state, and shedding or scheduling loads when needed.
Specifications
The reference package at a glance
Nameplate values help compare equipment. They do not replace a production model, load calculation, or site-specific design.
- Solar capacity
- 4.98 kW DC
- Battery capacity
- 25.6 kWh nominal
- Inverter output
- 12 kW split-phase inverter output; load support is design dependent
- System type
- Equipment kit for off-grid and backup projects
- Ideal property
- A remote or outage-prone property with space for a ground or roof array, a protected equipment area, and loads that have been measured and matched to the system.
Supporting system diagram
Use the architecture to ask better design questions.
This original explanatory diagram remains intentionally simplified. Exact equipment quantities, connections, supported loads, and installation details follow the final property evaluation and written design.
Installation considerations
The equipment is only one part of the project
Requires site-specific load sizing, mounting, overcurrent protection, grounding, wiring, permitting where applicable, and qualified electrical work.
Complexity: High — multi-component off-grid design with separate controllers, battery cabinet, protection, mounting, and site-specific distribution.
Review the installation process →- 01
Build a circuit-by-circuit load inventory including motor startup demand.
- 02
Model winter or low-sun production rather than relying on a favorable-day estimate.
- 03
Confirm array structure, conductor runs, grounding, disconnects, overcurrent protection, and local permits.
- 04
Plan generator or other backup charging only with documented compatibility and qualified design.
Cost explanation
Equipment, installation, and incentives are separate
No price on this page is a checkout offer. A signed provider proposal must identify the exact equipment, labor, site work, taxes, and exclusions.
Equipment reference price
$11,946
Dated equipment reference; freight, site work, and installation may be separate.
Estimated installed project range
Site-specific installed quote required
No responsible numeric range is shown without a property and installation-scope review. Final pricing requires provider confirmation.
Incentives
No incentive assumed
No incentive is assumed. Equipment and project eligibility vary by location, program rules, installation date, and taxpayer circumstances.
Pricing note
Dated equipment reference only; no numeric installed range has been validated. A site-specific installed quote must account for freight and access, mounting or roof work, permitting, electrical distribution and upgrades, design, labor, commissioning, location, taxes, balance-of-system items, and system customization.
Final-cost factors
What can change the final project cost
A useful quote separates the equipment reference from every installation and property-specific line item.
Permitting and utility review
Local permit fees, inspections, and interconnection requirements vary by jurisdiction and utility.
Electrical upgrades
Service panels, load centers, disconnects, protection, backup controls, and load management may change the scope.
Roof, structure, and mounting
Roof condition, structural work, array layout, ground mounting, trenching, and access can add labor and materials.
Design, labor, and commissioning
Engineering, licensed installation, testing, inspection corrections, and system setup belong in the complete project price.
Location and delivery
Freight, taxes, travel, local labor rates, site access, and equipment availability differ by property and ZIP code.
System customization
Array size, battery quantity, backed-up loads, generator or EV integration, and optional equipment affect final cost.
What is in the reference scope
Components and boundaries
Referenced as included
- 12 kW inverter
- Five 51.2 V 100 Ah batteries
- Twelve 415 W monocrystalline panels
- Charge controllers
- Battery cabinet
- Breakers
- Cables
- Mounting brackets for the referenced configuration
Optional or site-specific
- Site-specific mounting
- Generator integration where compatible
- Additional balance-of-system equipment
Monitoring: Confirm monitoring capabilities for the current component revision.
Expansion: Any expansion must remain within the exact inverter, battery, controller, and wiring design limits.
Availability: Provider and ZIP dependent; equipment-only fulfillment may differ from installed availability.
Package FAQ
Questions about this specific configuration
Use these answers to understand the equipment scope, verified values, and package-specific tradeoffs before requesting a proposal.
Can this kit run central air or a well pump?
It may, but the appliance running load, startup surge, duty cycle, other simultaneous loads, wiring, and inverter settings must all fit the engineered design.
Does 25.6 kWh mean I can use 25.6 kW at once?
No. Kilowatt-hours describe stored energy; kilowatts describe power delivered at one moment. Both battery limits and the 12 kW inverter rating matter.
Is the listed price an installed project price?
No. It is an equipment reference. Freight, design, mounting, permitting, electrical distribution, labor, site work, commissioning, and taxes may be separate.
Will the solar array make the same energy every day?
No. Production varies with location, season, weather, shade, temperature, orientation, cleanliness, and system losses.
Can I expand the system later?
Potentially, within the documented inverter, battery, controller, wiring, and code limits. Expansion should be designed rather than assumed.
Buyer objections, answered
Questions homeowners usually ask
The right answer depends on the property and the final design. These are the questions a provider should resolve before asking you to choose.
Do I need batteries?
For this off-grid package, batteries are part of the intended design because they supply stored energy when solar production is low or unavailable. The appropriate capacity still depends on daily use, desired reserve, seasonal production, and any generator plan.
How much solar do I need?
This reference package includes 4.98 kW DC. The appropriate size for your home depends on recent electricity use, roof or ground space, shade, orientation, local weather, utility rules, future loads, and the amount of energy you want the array to replenish.
Can this power my whole house?
Possibly, depending on system design—not from the headline kW or kWh values alone. Heating, cooling, pumps, electric cooking, EV charging, and other large loads must be checked for running power, startup surge, daily energy use, and simultaneous operation before whole-home or partial-home support is selected.
What happens during an outage?
The batteries and inverter can continue supplying the loads included in the off-grid design while solar can recharge the bank when conditions allow. Runtime depends on battery state, active loads, reserve settings, weather, solar production, and any compatible generator strategy.
How long does installation take?
The timeline is site specific. Property assessment, engineering, equipment availability, permitting, utility review where applicable, roof or electrical work, installation, inspection, and commissioning can each affect the schedule. The provider should put its expected milestones and dependencies in writing.
Can I expand later?
Any expansion must remain within the exact inverter, battery, controller, and wiring design limits.
What if my roof is shaded?
Shade reduces production and may change the appropriate array size or location. A site assessment should compare roof planes, seasonal shade, setbacks, responsible trimming where appropriate, and a ground-mount option before the final design is selected.
Manufacturer coverage
Read each component document
Warranty terms vary by component; the complete kit does not have one universal warranty duration.
Installation coverage
Workmanship is separate
Workmanship coverage, when offered, will be stated in the signed installer proposal.
Fulfillment
Confirm the written scope
Seller freight terms, access limits, inspection requirements, and surcharges control.
Provider and ZIP dependent; equipment-only fulfillment may differ from installed availability.
More planning questions
Research beyond the package
Use these general answers alongside the product-specific details above.
How much does solar cost?
Solar cost depends on the home, energy use, equipment, installation complexity, and location. A property evaluation and written proposal are needed before final pricing is available.
Will solar work on my house?
Fit depends on roof orientation, shade, electrical setup, local conditions, and available mounting space. A qualified property review confirms whether a roof, ground-mount, or another configuration is practical.
Do I need batteries?
Not every solar project needs batteries. The decision depends on grid reliability, backup needs, energy goals, compatible equipment, and budget. A battery may add outage capability, but supported loads and duration require a specific design.
Can I install solar if I am not ready to buy?
Yes. You can complete an assessment and compare available systems before making a purchase commitment. The assessment is free, and no purchase is required.
How long does installation take?
Timing varies with site review, design, permitting, equipment availability, inspections, and utility requirements. A provider should give a project-specific schedule and explain which milestones can affect it.
Planning guides
Research the decisions around the equipment
Independent planning context
How to size a home solar and battery system
Start with energy and power needs, then test the design against site conditions.
Read guide →Independent planning context
Grid-tied, hybrid, and off-grid solar explained
Understand the operating assumptions behind three very different system architectures.
Read guide →Independent planning context
The difference between kW and kWh
Use power and energy correctly when comparing panels, inverters, loads, and batteries.
Read guide →Related starting points
Compare fit, scope, and tradeoffs
Example configuration
Premium California configuration
Tesla Powerwall 3 Solar + Battery Package
Homes on time-of-use rates can produce solar before evening demand peaks, while an outage plan can fall short when storage and backed-up loads are chosen separately.
- Solar
- 10.2 kW DC
- Battery
- 27 kWh nominal
$44,500–$52,000 installed estimate
Example configuration
Solar System Installations Enphase-based configuration
Enphase Premium IQ-5P Home Energy System
Complex roof planes, localized shade, and changing backup goals can make a fixed, centrally converted solar-and-storage design harder to fit and expand.
- Solar
- 10.32 kW DC
- Battery
- 20 kWh usable
$39,000–$46,500 installed estimate
Example configuration
High-capacity battery configuration
ECO-WORTHY 10 kW Off-Grid Power System
Remote properties with high daily use or longer outage plans can outgrow smaller arrays and battery banks, but capacity alone does not establish whole-property independence.
- Solar
- 10.62 kW DC
- Battery
- 30.72 kWh nominal
$12,049.99 equipment reference
What happens next
From system match to a property-specific decision
Requesting a match starts the review; it does not commit you to equipment, financing, or installation.
- 01
Share your priorities
Tell us about the property, recent electricity use, backup goals, timing, and any large planned loads.
- 02
Review the system fit
Use the match to compare suitable package types, likely tradeoffs, and the information still needed for design.
- 03
Confirm the project scope
A qualified provider must verify the site, equipment, engineering, availability, schedule, and written installed price.
Personalized next step
See whether this package fits your home
Share your property, energy range, backup goals, and timeline. You will get a more useful starting point without committing to a purchase.
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