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Off-Grid Solar Power System

Off-Grid Solar Power Systems with Battery Storage

We supply off-grid solar power systems combining PV modules, battery storage and off-grid inverters for homes, remote sites and projects without reliable utility access. Our published product range includes home solar energy storage packages with different inverter outputs and battery capacities.

 

For installers, EPC contractors and wholesale buyers, system selection starts with daily energy use (kWh), peak and starting loads (kW), required battery autonomy, local solar conditions and available backup charging. 

5KW Off-Grid System 15KW Off-Grid System 4KW Solar Storage System 30KW Off-Grid System
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Off-Grid System Comparison

Compare Off-Grid Solar Power System Options

Choose an off-grid system by its inverter AC output and available battery storage. Output power determines simultaneous load capacity; stored energy helps determine how long those loads can operate.

System Product AC Output Battery Storage Product Details
4KW Home Solar Energy Storage System 3kW 5.12kWh View 4KW-Named System →
5KW Home Solar Energy Storage System 5kW 10.24kWh View 5KW System →
15KW Home Solar Energy Storage System 15kW 40.96kWh View 15KW System →
30KW Home Solar Energy Storage System 30kW Configured for project requirements View 30KW System →

For the 4KW-named package, the current specification shows 3kW AC output. Confirm inverter and battery ratings in the final quotation.

Equipment and Supply Scope

Off-Grid Solar System Components and Supply Scope

An off-grid solar system combines solar generation, inverter power conversion and battery storage. Mounting hardware, cabling, protection and monitoring are defined in the agreed system bill of materials.

Solar PV Array

PV modules generate DC electricity during daylight. Array size depends on site irradiation, daily energy consumption and installation space.

Off-Grid Inverter

The inverter supplies AC electricity to connected loads. Continuous power, surge capacity and output voltage must match the project.

Battery Storage

Batteries supply stored energy when PV generation is insufficient. Usable capacity, discharge power and BMS compatibility affect system operation.

Mounting, Cabling and Protection

Mounting structures, electrical cables, disconnects and protection equipment are selected for the installation and specified in the supply schedule.

Equipment quantities, monitoring functions and accessory packages vary by the ordered configuration.

Off-Grid System Sizing

Size an Off-Grid Solar System for Your Electrical Loads

Start with daily energy use and simultaneous equipment demand. Then calculate the battery storage and solar generation required for the installation location.

01

Estimate Daily Energy Demand

Record appliance wattage and operating hours to calculate daily electricity use in kWh. Include essential loads and seasonal variations.

02

Check Peak and Starting Power

Add the loads likely to run simultaneously. Include starting surges from motors, pumps or compressors when selecting inverter capacity.

03

Determine Battery Autonomy

Calculate the usable stored energy needed overnight or during low-sunlight periods. Allow for inverter losses, battery operating limits and any planned backup generator.

04

Size the PV Array

Use local solar irradiation, seasonal generation, shading and expected system losses to select PV capacity. Confirm PV string compatibility with the inverter.

Applications and Engineering

Off-Grid Applications and Electrical Compatibility

Off-grid power systems are used in locations with limited or unavailable grid access. Each system must be configured for the connected loads and local electrical requirements.

Project Applications

Remote Homes and Cabins

Solar and battery power for homes without a dependable grid connection. System size follows household electricity use.

Remote Offices and Facilities

Power for lighting, communications and other defined equipment at remote facilities.

Commercial and Industrial Loads

Larger configurations can be evaluated for selected site equipment after reviewing demand, starting currents and energy availability.

Technical Compatibility

Inverter AC Output

Verify output voltage, phase, frequency, continuous rating and surge capability.

PV and Battery Interfaces

Confirm inverter MPPT voltage range, PV input current, battery voltage, charge limits and BMS communication.

Backup, Controls and Compliance

Check supported generator input, monitoring options, wiring diagrams and applicable destination market documentation for the selected model.

On-Grid Solar Systems → Hybrid Solar Systems → All Solar Power Systems →

Project Requirements

Off-Grid Solar Power System RFQ

Send your electricity demand and installation requirements to DTSOLARPOWER for system configuration and project pricing.

  • Project country and installation location
  • Residential, commercial or remote-site application
  • Daily electricity consumption in kWh
  • Maximum simultaneous AC load in kW
  • Motor, pump or compressor starting requirements
  • Required battery autonomy or backup duration
  • AC output voltage, phase and frequency
  • Available PV installation area and mounting type
  • Generator integration or future expansion requirements
  • Order quantity, required documents and delivery destination
Request an Off-Grid Solar System Quote →

Buyer Questions

Off-Grid Solar Power System FAQ

  • What equipment is included in an off-grid solar power system?

    A typical system includes solar PV modules, an inverter and battery storage. Mounting hardware, electrical protection and other accessories are defined in the agreed supply list.

  • How do I choose between a 5kW, 15kW and 30kW off-grid system?

    Compare simultaneous AC loads, motor starting power, daily energy use and required battery autonomy. A higher inverter rating does not necessarily provide longer operating time.

  • How much battery storage does an off-grid solar system need?

    Battery capacity depends on daily consumption, the required operating duration without solar generation, usable energy and discharge power limits.

  • Can an off-grid solar system supply power during cloudy weather?

    An off-grid system can continue supplying loads when solar generation is low, provided the battery or another supported energy source has sufficient capacity. Operating time depends on stored energy and consumption.

  • Can an off-grid solar system work with a diesel generator?

    Generator integration is possible when supported by the selected inverter and system controls. Confirm compatible input ratings and operating modes before ordering.

  • What details are needed for a wholesale off-grid solar system quote?

    Provide daily electricity demand, peak load, battery autonomy requirements, output voltage, order quantity and installation destination.

Off-Grid Solar Project Enquiry

Request Off-Grid Solar System Pricing

Send your project requirements to DTSOLARPOWER for off-grid solar system configuration and pricing.

Request an Off-Grid Solar Quote →

Xiamen D.T. Multi Tech Co., Ltd. is one of the most professional off-grid solar power system manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to wholesale cheap off-grid solar power system from our factory.

30KW Home Solar Energy Storage System, 5KW Home Solar Energy Storage System, Off Grid Solar Power System