Off-Grid Solar Kits 12kW/15kW/18kW 120V/240V 415W Panels LiFePO4 Battery (SGR-18K20E)

Home Solar Kits 12-18kW — Complete Split Phase 120V/240V System

Home solar kits at this output level represent the serious end of residential off-grid solar investment — and the SGR-18K20E delivers 12kW, 15kW or 18kW of split-phase 120V/240V off-grid power in three configurations, paired with 415W monocrystalline solar panels, 51.2V LiFePO4 batteries, dual MPPT charge controllers, enclosed battery cabinet and all mounting hardware. Powerful enough to run air conditioners, well pumps, lights, refrigerators, workshops, offices and light commercial loads simultaneously, this residential solar kits range is designed for homes and properties where energy independence is a genuine operational requirement — not just an aspiration. Easily expandable as power needs grow.

Table of Contents

1. Kit Contents by Configuration
2. System Specifications
3. Three Configurations — Choosing Your Output
4. Split Phase 120V/240V for Full Residential Coverage
5. LiFePO4 Battery Storage
6. Solar Power Kits for Home — Load Capacity
7. Expandability
8. FAQ

Kit Contents by Configuration

SGR-12K20E (12kW):

• 1 × 12,000W 48V DC 120V/240V AC Output
• 12 × 415W Monocrystalline Solar Panels
• 5 × 100AH 51.2V LiFePO4 Battery (25.6kWh)
• 2 × 100A MPPT Solar Charge Controller
• 1 × Enclosed Battery Cabinet
• 2 Sets × 50ft Solar Extension Cables
• 2 Sets Cable Between Battery and MPPT Controller
• 12 × Sets Mounting Z-Brackets
• 1 × 400A DC Breaker
• 2 × 25A PV Breaker

SGR-15K20E and SGR-18K20E (15kW/18kW):

• 1 × 15,000W or 18,000W 48V DC 120V/240V AC Output
• 20 × 415W Monocrystalline Solar Panels
• 6 × 100AH 51.2V LiFePO4 Battery (30.72kWh)
• 2 × 100A MPPT Solar Charge Controller
• 1 × Enclosed Battery Cabinet
• 2 Sets × 50ft Solar Extension Cables
• 2 Sets Cable Between Battery and MPPT Controller
• 20 × Sets Mounting Z-Brackets
• 1 × 400A DC Breaker
• 2 × 50A PV Breaker

System Specifications

Three Configurations — Choosing Your Output

The SGR-18K20E product family offers three distinct home solar kits configurations — 12kW, 15kW and 18kW — enabling buyers to match inverter output to genuine load requirements without paying for oversized capacity.

12kW is appropriate for large residential homes consuming 20–25kWh daily — running all standard household loads simultaneously within the 12,000W continuous output rating.

15kW is appropriate for properties with higher simultaneous load profiles — multiple air conditioning units, three-phase workshop equipment or residential-commercial hybrid loads.

18kW is the high-output residential and light commercial specification — providing continuous output margin for properties where peak demand regularly approaches or exceeds 12–15kW.

All three configurations use identical panel types and battery chemistry — the difference is purely in inverter output rating and panel count.

Split Phase 120V/240V for Full Residential Coverage

As solar power kits for home go, split-phase 120V/240V output is the non-negotiable specification for genuine North American residential replacement. Standard utility power in North America delivers two 120V legs combining to 240V — enabling simultaneous operation of 240V appliances (central air conditioning, well pumps, electric water heaters, dryers) and standard 120V household circuits from the same electrical panel.

These home solar kits reproduce this exact electrical configuration — so every outlet, circuit and appliance in the home operates exactly as it does on grid power. No adapters, no load limitations and no functional compromise.

LiFePO4 Battery Storage

At 25.6kWh (12kW config) and 30.72kWh (15kW/18kW config), the battery storage in this home solar installation kit product family is among the largest in the mid-range residential solar kit market. This storage level provides:

• Full overnight coverage for large residential properties through a complete 8–10 hour overnight period
• Multi-day cloudy-weather resilience before backup generation is required
• Buffer for simultaneous high-draw loads without battery depletion risk

The 51.2V LiFePO4 enclosed battery cabinet provides organised, professional storage with built-in protection — appropriate for both residential mechanical rooms and external weatherproof enclosures.

Solar Power Kits for Home — Load Capacity

These solar power kits for home run everything:

• Central air conditioning — single or multiple units
• Well pump and pressure system
• Electric water heater
• Full kitchen appliance load
• Washer and dryer
• Workshop tools and equipment
• Whole-home lighting
• Entertainment and office systems
• Light commercial and industrial applications

The home solar array of 12 or 20 × 415W panels provides 4,980W or 8,300W of generation — producing 20–33kWh daily to keep storage full and loads running.

Expandability

Add more batteries. Add more panels. Connect additional inverters in parallel — single-phase, split-phase or three-phase — as energy needs grow. These home solar kits are designed as expandable platforms, not fixed-capacity systems.

Explore the full residential solar kit range in our Solar Kits, Off-Grid Solar Systems and Solar Panels categories.

FAQ

What are home solar kits and who are these for? Home solar kits are complete packages containing solar panels, battery storage, an inverter, charge controllers and all installation hardware — enabling residential off-grid solar installation without separate component sourcing. These SGR-18K20E home solar kits are designed for large residences, cabins, farms and light commercial properties requiring 12–18kW of continuous off-grid output with 25–30kWh of battery storage.

What is the difference between the 12kW, 15kW and 18kW configurations? The 12kW configuration (SGR-12K20E) includes 12 panels and 25.6kWh of battery storage. The 15kW and 18kW configurations include 20 panels and 30.72kWh — with more generation and storage for higher daily consumption profiles. All three use identical battery chemistry and panel type — the difference is inverter output rating and panel count.

Do these residential solar kits include everything needed for installation? Yes — these residential solar kits include inverter, solar panels, LiFePO4 batteries, MPPT charge controllers, enclosed battery cabinet, extension cables, battery-to-MPPT cables, mounting Z-brackets and circuit protection breakers. Every essential component for a complete off-grid residential solar installation is provided.

What does home solar installation kit mean in this context? Home solar installation kit means a package that includes not just the core components (panels, battery, inverter) but also all the installation hardware — mounting brackets, cables, breakers and charge controllers. No separate hardware purchases are required. These kits are designed so a qualified installer or experienced DIY builder can commission the complete system from the single kit contents.

What is the home solar array generation from the 15kW/18kW configuration? The home solar array of 20 × 415W panels in the 15kW/18kW configuration delivers 8,300W of total generation — producing approximately 33kWh per day under four hours of peak sun and up to 50kWh in sun-belt locations with six hours of peak sun.

Are these solar power kits for home suitable as primary residence systems? Yes — at 12–18kW of continuous output with 25–30kWh of battery storage and 20–33kWh of daily generation, these solar power kits for home are sized for primary residence use. Every standard household load — air conditioning, well pump, appliances, lighting — operates normally without compromise.