Best Solar Inverter Off Grid System 2024

by | Apr 4, 2024 | Renewable Energy, Solar Energy

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Modern off-grid solar systems use complex inverters to control batteries, solar panels, and backup AC power sources like generators. The solar inverter off grid, also known as an inverter-charger, is the heart and brain of an off-grid system. Its principal function is to provide pure sine wave AC power, and it must be capable of meeting the power demands of the appliances under all conditions. Off-grid (multi-mode) inverters serve as the core energy management system, and they can be AC-coupled with solar inverters or DC-coupled with MPPT solar charge controllers.

Solar inverter off grid systems are a viable solution for isolated regions or areas with unreliable grid infrastructure, providing sustainable and reliable power generation.

Top Solar Inverter Off Grid System 2024

Inverter Type Use Sizes available Battery system voltage Price Range
Selectronic SP PRO Inverter-charger (Multi-mode & bidirectional) Solar storage, backup (UPS), off-grid 3.0kW, 4.5kW, 5.0kW, 7.5kW, 15kW, 20kW 24V, 48V, 120V From AU$5000 (4.5kW)
Victron Multiplus 2 Inverter-charger (Multi-mode & bidirectional) Solar storage, backup (UPS), off-grid 1.6kW, 2.4kW, 4.0kW, 6.5kW, 8.0kW, 12kW (15kVA) 12V, 24V, 48V From AUD$1600 (2.4kW), US$1100 (2.4kW)
Outback Power Radian A Series Inverter-charger (DC-coupled) Solar storage, backup (UPS), off-grid 8kVA, 4kVA 48V from US$4000 (8kVA)
SMA Sunny Island Inverter-charger (Multi-mode & bidirectional) Solar storage, backup (UPS), off-grid 3.3kW, 4.6kW, 6.0kW 48V From AU$3800, US$2900
Schneider Electric XW Pro Inverter-charger (Multi-mode & bidirectional) Solar storage, backup (UPS), off-grid 5.5kW, 6.8kW 48V From AU$4000, US$3000

1. Selectronic SP PRO

Selectronic’s SP PRO solar inverter off grid chargers, have an extraordinarily high 30-minute power rating and an amazing 2.5x peak/surge power rating thanks to heavy-duty toroidal core transformers. They also have a variety of control mechanisms, such as relays and digital inputs and outputs, that can be programmed for load management or generator control. The SP PRO, however, is not only unique in terms of technology but also includes the industry’s most comprehensive energy management software.

2. Victron Multiplus 2

Victron Energy is a well-known, multinational, high-quality company with a diverse product line that includes battery chargers, sinewave inverters, inverter chargers, DC/DC converters, transfer switches, battery monitors, charge controllers, and more. It provides various sizes of the most cost-effective multi-mode inverters, including the new MultiPlus II solar inverter off grid chargers from 800W to 15,000W (15kVA). Victron is a superb, low-cost alternative for many applications, particularly DC-coupled systems.

3. Outback Power Radian A Series

Outback Power was founded in 2001 by three power systems design experts and has since become one of North America’s top manufacturers of solar inverter off grid power systems. The company offers innovative inverter chargers for off-grid residential and commercial systems and the popular Flexmax MPPT solar charge controllers. In addition to the well-known FXR and vented VFXR series for off-grid use, the Radian series of bi-directional inverter chargers was created for advanced hybrid (grid-connected) energy storage systems and off-grid applications.

4. SMA Sunny Island

SMA Solar Technology is a renowned supplier of solar energy technology, founded in 1981, and one of the world’s largest makers of solar inverters. Sunny Island inverters have proven reliable in harsh outdoor conditions, particularly at sub-zero temperatures. It is also one of the few off-grid inverter chargers with an IP54 weather rating, which allows it to be deployed in semi-exposed areas.

5. Schneider Electric XW Pro

Schneider Electric is a well-known European firm and a market leader in electrical product development. The company specialises in inventing and developing products for solar power conversion. They provide a variety of high-quality inverters built for solar inverter off grid and hybrid (grid-tie) applications, including the small SW series and powerful XW Pro series.

Also Read: Does Solar Panels Increase Home Value?

What Is The Future of Solar Inverters?

The future of solar inverters is likely to be shaped by advancements in technology, growing demands for renewable energy sources, and the need for more efficient, intelligent, and integrated energy systems. Here are several key trends and innovations that could define the future of solar inverters:

solar inverter off grid

1. Solar Inverter Efficiency

Current State: Leading-edge solar inverters now achieve efficiencies exceeding 98.5%, with minimal energy lost during conversion. This benchmark is detailed in sources like “Photovoltaic System Design: Procedures, Tools and Applications.”

Future Outlook: The industry is not resting on its laurels; efforts to breach the 99% efficiency mark are underway, indicating a continued drive towards optimizing energy conversion.

2. Smart Monitoring Capabilities

Adoption Rates: A notable trend is the integration of built-in data loggers and internet connectivity in inverters. According to the Solar Energy Industries Association (SEIA), around 70% of newly sold inverters in the U.S. feature online connectivity.

Benefits: This technological integration facilitates remote monitoring and management through smartphone apps and web dashboards, enhancing user convenience and system efficiency.

Future Outlook: The application of AI and machine learning technologies is set to enhance the functionality of solar inverters. This can include predictive maintenance, optimizing energy distribution based on consumption patterns, and enhancing the overall performance of solar power systems.

3. Integration with Storage Solutions

Market Growth: As battery storage becomes more cost-effective, there’s a significant shift towards inverters designed for seamless storage integration. Navigant Research projects this market segment to expand to $12.8 billion by 2027.

Importance: This trend underscores the growing need for solar systems to provide energy storage solutions, making renewable energy more reliable and accessible.

Grid-Support Features

Innovations: Modern inverters now offer advanced features that support grid stability, including reactive power support. This development is crucial for integrating solar power into the existing grid infrastructure efficiently.

Impact: Studies by entities like the National Renewable Energy Laboratory (NREL) highlight that inverters with grid-support capabilities can significantly lower the costs associated with solar power integration.

Safety and Durability Enhancements

Safety Measures: Current-generation inverters come equipped with comprehensive safety features, such as arc fault detection and ground fault protection, marking significant advancements in operational safety.

Warranty and Lifespan: Inverter warranties typically range from 5 to 12 years, with possibilities for extensions. Notably, with appropriate maintenance, the actual lifespan of these inverters often surpasses their warranty period, indicating their built-to-last design.

In conclusion, with technological developments and increasing prices, these systems contribute significantly to energy independence and environmental sustainability, making them an attractive option for solar inverter off grid communities and individuals looking for clean energy alternatives.

Also Read: Solar Power For Home Cost In Texas



  • Michael Thompson

    Michael Thompson is an esteemed expert in the renewable energy sector, with a profound experience spanning over 25 years. His expertise encompasses various sustainable energy solutions, including solar, wind, hydroelectric, and energy efficiency practices. Michael discusses the latest trends in renewable energy and provides practical advice on energy conservation.

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