An off-grid solar system's size depends on factors such as your daily energy consumption, local sunlight availability, chosen equipment, the appliances that you're trying to run, and system configuration. Contact online >>
An off-grid solar system''s size depends on factors such as your daily energy consumption, local sunlight availability, chosen equipment, the appliances that you''re trying to run, and system configuration.
Below is a combination of multiple calculators that consider these variables and allow you to size the essential components for your off-grid solar system:The solar array.The battery bank.The solar charge controller.The power inverter.
Simply follow the steps and instructions provided below.
The primary factor determining your off-grid system size is your Daily Energy Consumption, measured in Watt-hours (Wh) or kilowatt-hours (kWh). 1 kWh = 1,000 Wh.
The higher your daily energy usage, the more solar panels and batteries you''ll require. In fact, as you''ll see in the next steps, the sizing of these two components is based on your highest expected daily energy usage (Max. Watt-hours/day).
If you already have a specific number in mind, that''s great! You can move on directly to the second step.
If you don''t, the following calculator will help you list all appliances you plan to use each day, determine their energy consumption, and sum everything up up to estimate your highest daily energy usage.
These "Peak Sun Hours" vary based on two factors:Geographic locationPanel orientation (Tilt and Azimuth angles).
The calculator below considers your location and panel orientation, and uses historical weather data from The National Renewable Energy Laboratory to determine Peak Sun Hours available to your solar panels.
Using your daily energy usage and Peak Sun Hours, and assuming a system efficiency of 70%, the calculator estimates the Wattage required for your off-grid solar system''s solar array.
In the absence of backup power sources like the grid or a generator, the battery bank should have enough energy capacity (measured in Watt-hours) to sustain operation for several days during periods of low input from the solar array.
This is what''s referred to as "Days of Autonomy". However, the more autonomy you go for, the larger (and more expensive) the battery bank will be.
Also, to optimize battery life vs. cost, it''s recommended to only use a percentage of your battery bank''s energy capacity and not go beyond a certain "Depth Of Discharge" (DOD) when discharging your battery bank.
This means that you''ll need to oversize the battery bank further if you''re going to follow these recommendations, which vary depending on the type of battery you''ll be using.
Using off-grid solar storage systems allows you to have all the convenience that electricity offers without having to run power lines out to a remote property that may be prone to outages.
Solar panels first convert solar energy or sunlight into DC power using what is known as the photovoltaic (PV) effect. The DC power can then be stored in a battery or converted by a solar battery inverter into AC power which can be used to run home appliances.
Victron Energy offers full flexibility when it comes to selecting an off-grid battery bank of choice. Next to our own range of quality batteries, the choice includes a number of well supported third party Lithium battery manufacturers that can be easily integrated through the use of a GX-device. This flexibility enables our customers to perfectly match their off-grid needs for their unique power situation.
Check the manufacturer's data sheets for the expected cycle life and see what works in your (business) case. Each manufacturer comes from a different background and each may have it''s pros and cons for your local situation (availability, support, performance in hot/cold climates, installability, pricing, etc). Therefore, feel free to reach out to a nearby Victron Authorised installer and ask for their local know-how.
Lithium: 30kWh - Third party Lithium battery module + Cerbo GX: In this example, 20kWh is enough to power the daily energy consumption. Considering typical system losses of approx 15% and the maximum Depth of Discharge (DOD) of 80% a total of 30kWh of battery modules is required.
The percentage of battery capacity used for self-consumption is configurable. When utility grid failure is extremely rare it could be set to 100%. In locations where grid failure is common - or even a daily occurrence - you might choose to use just 40% of battery capacity and save 60% for the next grid failure. African countries for example. With insights from VRM you can optimise this setting, for maximum efficiency.
When using a third party Lithium bank, a GX device is mandatory, such as the Cerbo GX. Integrated through a CANbus interface, the GX device is used to set up, manage charge and discharge limits and to exchange error codes and state of charge information.
Every system is different and each location may provide unique challenges. Many variables need to be considered and there are multiple configurations when implementing ESS systems, check the links on the right for more info or ask your installer what is the best solution in your area.
In general, size the solar array with +20% of your base load or towards the max input of your MPPT +20% to rely more on the sun than on the grid. Geographical location data and panel orientation must be considered.
In this example a fairly large solar array is able to charge the battery in 3-4 hours and powers the loads during the rest of the day. With insights from VRM you can analyse the energy consumption and solar yield, to learn how to adjust to more energy efficient behaviour or to expand with more solar and battery capacity to become independent of the grid.
With this hybrid concept, your fuel and maintenance bills go down significantly. Thanks to our inverters with PowerAssist, you can now also choose a smaller generator, the inverter will use additional energy from the battery to power peak loads during a black-out. With our long list of possible settings to auto start/stop the generator you can even program the system with generator-free times, to avoid the genset from being started in the middle of the night.
GX-devices are the communication centre of an installation, giving you perfect control over all systems components and maximise their performance, no matter where you are. They are also essential to integrate a third party Lithium battery bank.
About 110 kWh off-grid energy storage
As the photovoltaic (PV) industry continues to evolve, advancements in 110 kWh off-grid energy storage have become critical to optimizing the utilization of renewable energy sources. From innovative battery technologies to intelligent energy management systems, these solutions are transforming the way we store and distribute solar-generated electricity.
When you're looking for the latest and most efficient 110 kWh off-grid energy storage for your PV project, our website offers a comprehensive selection of cutting-edge products designed to meet your specific requirements. Whether you're a renewable energy developer, utility company, or commercial enterprise looking to reduce your carbon footprint, we have the solutions to help you harness the full potential of solar energy.
By interacting with our online customer service, you'll gain a deep understanding of the various 110 kWh off-grid energy storage featured in our extensive catalog, such as high-efficiency storage batteries and intelligent energy management systems, and how they work together to provide a stable and reliable power supply for your PV projects.
