All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
(56 products available)
Ready to Ship
Ready to Ship
There are three primary types of a 21 kW off-grid solar inverter, each designed with unique functionality to suit different energy conversion requirements. These include hybrid, preparing and pure sine wave inverters.
A hybrid inverter combines the functionalities of PV (photovoltaic) inverters and battery storage systems. It simultaneously channels solar energy, adjusts to store excess energy in batteries and supplies power to the home. This makes it an ideal choice for people who want to optimize energy use and have a backup power option.
The hybrid solar inverter is compatible with both solar panels and batteries, allowing it to store energy for future use. This functionality makes it a versatile option for people who want to be prepared for all situations. It performs well in areas where energy is intermittently available, or there are energy management systems.
Unlike the hybrid inverter, a grid tie solar inverter does not have the supplemental function of storage. It can only convert solar investment into usable power for the grid. This type of inverter is affordable and most suitable for homes and businesses connected directly to the electrical grid.
Grid tie inverters came in two varieties, string inverters and microinverters. String inverters are installed in a centralized manner, with components connected to a series or string of solar panels. While this configuration is easier to implement with lower costs, it means that if one panel is overshadowed, malfunctioned, or otherwise degraded, the entire string's output will be affected.
Conversely, microinverters are installed on each solar panel individually, allowing that if one panel has an issue, it only affects that panel's output. This makes microinverters more effective in areas where solar panels are likely to be shadowed, such as residential areas with many trees in the vicinity.
Pure sine wave inverters create output power that is similar to grid power. This means that they can be used for all appliances, ranging from simple ones such as phone chargers to more complex electronics like TVs and computers. They are also crucial for medical equipment that requires stable and continuous power.
This inverter is an excellent choice for commercial businesses and larger residential settings with many energy-dependent devices. While it is more expensive than other inverters, it will provide better value due to its longevity and effectiveness.
21 kW off-grid solar inverters have several utilities that can provide significant value to all types of buyers. The following are some of the commercial outcomes and uses specifically for business purposes.
One of the main advantages that a 21 kW off-grid solar inverter offers commercial enterprises is the independence it provides from the grid. Manufacturing facilities, agricultural operations, and remote work sites often rely on stable and consistent energy sources for their operations.
With a 21 kW off-grid solar power system and inverter, companies can generate their own power and reduce dependency from utility companies. This ability is particularly critical in areas prone to blackouts, or brownouts and value can be added through uninterrupted operational capacity. Companies can continue with their production processes without incurring downtime as a result of power outages.
Off-grid solar inverters can help businesses realize substantial long-term returns on their investments. By generating their own solar power, companies can reduce or even completely offset their electricity expenses. In areas where electricity from the grid is prohibitively expensive or where connection costs are exorbitant, solar power becomes a more affordable option in the long term.
Moreover, with the solar energy industry increasingly moving toward the mass adoption of technologies such as battery storage, inverter efficiency, and decreasing solar panel prices, the overall cost of systems such as these is becoming very bearable. Companies can thus enjoy low energy provision and higher profit margins.
Corporate environmental responsibility is becoming an ever-growing priority in today's sustainably conscious marketplace. Businesses can contribute to global carbon emission reduction and positive brand association by utilizing a 21 kW off-grid solar inverter as part of their energy mix.
As more companies strive to achieve sustainability goals and reduce their environmental impact, incorporating solar power into operations enhances brand reputation while complying with numerous environmental regulations. Businesses can avoid penalties and maintain compliance with environmental legislation by running a solar system.
Many enterprises in sectors such as healthcare, hospitality, and critical infrastructure must always have power availability. With a 21 kW off-grid solar inverter, companies can create a reliable energy emergency backup system.
This capability is particularly crucial in geographical locations prone to severe weather occurrences, such as hurricanes, wildfires, and prolonged natural power outages. This not only ensures continuous operation during emergencies, but it also presents the business as a proactive risk manager and a reliable entity in offering services to its customers.
Off-grid solar inverters are particularly useful for businesses in construction, mining, or adventure tourism that are in remote areas or off-grid. They can be used to power temporary work stations, construction trailers, or even portable machinery. In the adventure tourism industry, they are used in places such as safari lodges and camping sites to power lighting and customer information facilities.
These inverters are also suitable for mobile applications, such as providing energy to electrical systems in vehicles used for fieldwork, remote research stations, or expeditionary units in the military.
When selecting a 21 kW off-grid solar inverter, there are several factors to consider in ensuring the inverter system effectively meets the energy requirements of an operation. These factors include components such as inverter functionality and solar panel compatibility.
One of the main features of an off-grid solar inverter is the type of inverter functionality. There are several functionalities a solar inverter might have, such as MPPT (Maximum Power Point Tracking) technology and hybrid capabilities.
MPPT technology increases the system's efficiency by allowing the solar panels to operate at several points and capture the maximum energy. This function is essential in improving the system's efficiency to ensure more energy is captured and converted into usable power.
Conversely, hybrid inverters can operate a solar panel system with or without a battery. This functionality provides versatility in how power can be managed, enabling the system to use real-time energy, store it for future needs, or even operate on battery power if the utility grid goes down.
While a solar inverter can operate independently, pairing it with a battery storage system can optimize power availability for more extended periods. There are different battery storage options, including lithium-ion and lead-acid, each with positive and negative characteristics.
Lead acid batteries are the more affordable option and have been tried and tested over the years. However, they are heavier and require more maintenance than their lithium-ion counterparts. Lithium-ion batteries are much more efficient in storing and releasing energy, plus they are more compact and require little to no maintenance. This makes them a more effective and easier option in the long run.
It is critical to ensure the 21 kW off-grid solar inverter is compatible with any existing or prospective solar panel system. Various inverters are designed to be suitable for solar panel systems of different sizes. A 21 kW inverter will be suitable for a large solar panel system and provide efficient energy conversion.
Solar inverters are classified into two categories: string inverters, which are more affordable and are suited for a solar array that is homogeneous; and microinverters, which are more effective but are costly for solar arrays that are heterogeneous. A string inverter would be ideal if the solar panels were of the same type and installation, while any solar panel with a micro or central inverter could be effectively paired.
Proper installation is vital to the effectiveness of the solar inverter. It will have to be installed in a location that is easily accessible and can maintain suitable temperatures. In addition, hire only certified professionals with adequate experience with solar inverters to carry out the installation. They will ensure that the installation adheres to all the requirements of the relevant code and that the system operates effectively.
The 21kw off-grid solar inverter comes with several specifications that make it a very versatile and powerful product. Knowledge of these specifications and their associated maintenance requirements enables users to get the best performance and longevity from their solar inverter system.
Inverter Rating
The 21 kW rating of the off-grid solar inverter means that it can handle a 21 kW power load at any one time. This makes it suitable for large residential and commercial solar systems.
There are two inverter ratings to consider for solar inverters: continuous and peak. The continuous rating refers to the maximum amount of power the inverter can provide on an ongoing basis, while the peak value is the maximum power that can be provided for short intervals.
In general, the peak power value is higher than continuous power and is useful when devices with high power requirements, such as heaters and air conditioners, are needed for a short while. 21 kW off-grid inverters are meant for power-hungry households and commercial businesses that can effectively operate many devices simultaneously.
Input Voltage Range
The input voltage range refers to the range of voltage values that the inverter can accept from the solar panels or batteries. It is a critical specification because it ensures that the inverter can operate effectively under various outdoor conditions. Different solar panels have different voltages due to the fact that voltage levels are affected by temperature and amount of sunlight.
For this reason, the voltage input range needs to be wide enough to accommodate such variations. A solar inverter that has a wider input voltage range will be more efficient because it will be able to operate under different conditions.
MPPT Tracker
MPPT stands for Maximum Power Point Tracking, a feature of some solar inverters that enhances their efficiency. Photovoltaic cells generate different amounts of power depending on the sunlight they are exposed to. MPPT technology constantly assesses such conditions and adjusts the solar panel's electrical operating state to ensure it is at maximum efficiency. The more MPPT trackers there are on an inverter, the more photovoltaic panels the inverter can associate with.
Maintenance of the 21kw off-grid solar inverter does not have to be too intensive. However, following a few guidelines will help with its optimal performance both in the short and long term:
Regular Inspections
Conduct periodic inspections of the inverter and solar panels to check for shading, debris, and damage. Also check for any indication of wear and tear. The cooling fans of the inverter may need to be periodically checked to ensure they are not clogged with dust, which will impair cooling.
Cleaniness
Inverters need to be installed in places that are easily accessible for cleaning and maintenance. Also ensure that the area surrounding the solar panels is clean to allow for optimal sunlight exposure.
Software Updates
Some solar inverters come fitted with monitoring and control capabilities that allow them to be updated remotely. Check with the manufacturer on software updates and other technical solar inverter components that might need to be updated.
Professional Maintenance
Although periodic maintenance and inspections can be done alone, some maintenance activities might require professional services. Inverters need to be checked by professionals to make sure they work according to the manufacturer's standards and any warranty conditions are being met.
A1: The main function of an off-grid solar inverter is to convert the direct current generated by solar panels into alternating current. This current can then be used to power various household and business appliances. In addition to this function, an off-grid solar inverter also has other important functions.
For example, it can control the voltage and current of the direct current to ensure that it is at an appropriate level for the inverter. There are also hybrid inverters that operate a solar system with or without a battery, giving the user more options on power management.
A2: The 21 kW off-grid solar inverter has three key specifications that make it effective as a product for various applications: inverter rating, input voltage range, and MPPT tracker number.
A3: As with any other electrical machinery, the 21 kW inverters for off-grid solar systems require maintenance to prolong their life and achieve optimal performance. Some maintenance guidelines include conducting regular inspections to check for shading and damage, keeping the area surrounding the solar panels clean, and professional maintenance.
A4: A 21 kW off-grid solar inverter enables companies to produce their own power, reducing the costs of utility power and off-grid solar inverter dependency. In areas where utility power is expensive to acquire, this can make solar power more affordable in the long term.
A5: Continuous power is the maximum power level an inverter can supply on a consistent basis. Conversely, peak power is the maximum power level the inverter can provide for a short time. The peak power will always be greater than the continuous power, as appliances with high power requirements will need this power for a short while.
