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Solar solution: 8kW energy storage system for orchard in Indonesia

Are you looking for a reliable and cost-effective solar solution?

There are several solar energy storage configurations on the market, at varying prices. They are suitable for different scenarios and groups.

If your electrical load list also includes inductive loads such as water pumps, air conditioners, and refrigerators, you might as well stop and read this article.

This will enable you to get a professional and highly competitive solar solution.

The solar solution has 3 working modes

Case background:

Southeast Asia is rich in fruit resources, among which Mr. Philip from Indonesia runs an orchard, which brings him a rich income every year.

However, for objective reasons, the prices of non-renewable resources such as gas and coal fluctuate greatly. This, combined with increasing local electricity demand, has pressured the utility grid.

This has caused frequent outages and skyrocketing electricity bills for an already struggling city grid.

In order to stabilize the power of the orchard, and his home and get rid of increasingly expensive electricity bills, Mr. Philip sought solar energy solutions from PVMars solar energy storage company.

A solar system powers both the orchard and the house

To address the impact of intermittent power outages on orchard operations, PVMars suggested incorporating battery storage into the solar solution.

This ensures a reliable power supply and enables energy independence in areas without a grid.

12V 200Ah battery can power 1kW load for 2.4 hours

We directed Mr. Philip through an article covering key elements of the basic design of a solar energy storage system. —- You can click on the orange font to read this article with Mr. Philip.

After reading this article, Mr. Philip knows well the solar system. He also provides a detailed electrical load list for his house and orchard.

According to Mr. Philip’s load list, PVMars found a 4kW water pump.

Please see the figure below. This water pump is powered by a motor. Inductive loads, such as the motor, burst out an inrush current 3-6 times higher than the rated power during instant start-up.

Water pump diagram of anatomy
In addition, Mr. Philip’s residence has other inductive loads, such as refrigerators and air conditioners.

Accommodating these loads will require a more powerful solar inverter, but this also potentially increases the overall cost of the solar system.

To reduce Mr. Philip’s procurement costs, PVMars’ team of solar experts suggested adding Variable Frequency Drives (VFDs), to the water pump and residential loads.


Assigning different VFDs to handle specific inductive loads, can help mitigate high current surges for such loads during start-up.

The VFD price in this case is only a few hundred dollars. Compared with high-power solar inverters, VFD is more cost-effective.

Among them, the solar inverter function converts the DC of the solar panel/battery into usable alternating current.

At the same time, VFDs reduce the starting power of air conditioners and water pumps. They then transmit the converted AC power to supply such loads, forming a perfectly closed loop.

What else does a VFD do for a water pump?

In different scenarios, the water pump VFD functions are also different.

In the case mentioned above, the battery is designed as a backup solar solution, so the VFD is used as a buffer medium.

If you don’t need batteries, the water pump is only running during the day or the city grid is stable, then the VFD can be used as the transmission end of solar power without a solar inverter.

Only solar panel with VFD running the water pump

It is worth noting that the VFD can accept both solar and mains power at the same time.

If it is necessary to add a battery, in addition to adding a solar inverter, it is to replace the port originally connected to the photovoltaic with a battery.

Here photovoltaics and batteries choose one of them used as the main power sources.

VFD connecction ports

Installation of an 8kW solar energy storage system

According to PVMar’s detailed installation instructions for the batteries and solar panels.

Mr. Philip successfully completed the installation of his 8kW solar storage system.

Click the below picture, which will show a video to see how the solar system works.

Own a reliable solar solution!

Mr. Philip is satisfied with our solar solutions. Demonstrating that solar power meets specific needs within his budgetary constraints.

Through comprehensive analysis and advice, PVMars ensured his orchard’s power and residential needs were met.

This solar-powered success story shows how solar solutions can revolutionize energy access, benefitting both individuals and the environment.

About the author
Ayla Zhu is a content developer at PVMARS Solar. She has done her bachelors in English and master’s in Sociology. Prior to PVMARS, Ayla worked as a writer for different brands from the health, aviation, and pharma industries. She is passionate about sustainability and is currently exploring all things renewable energy!

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PVMARS Solar will set up 120 energy user service centers around the world. It will provide on-site investigation, design drawings, solar energy storage system solutions, transportation of goods, assist you to import solar energy storage system, installation services, and continue to cooperate with local engineers, exclusive agents and foreign merchants.

We sincerely hope to work with like-minded partners. Win-win cooperation to achieve harmonious coexistence between mankind and nature.

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