Solar panels are a popular choice for individuals seeking sustainable energy solutions and cost savings. However, understanding the actual electricity output of your solar panels is crucial to optimizing their performance and maximizing your investment. In this blog, we will explore various methods and tools that’ll tell you how much electricity your solar panels are generating.

How do I Know How Much Electricity My Solar Panels are Generating?

If you own solar panels, it’s valid to ask questions like how do I know how much electricity my solar panels are generating? Here we have discussed several methods that’ll help you determine the electricity generation of your solar panels:

1. Monitor Your Solar Meter

JAN23 how do I know how much electricity my solar panels are generating

The solar meter installed in your system continuously tracks the production of your solar panels and shares this data with your solar company. It typically displays various screens, with one showing the total kilowatt-hours generated by your solar panels. As long as these kilowatt-hours keep increasing, your solar panels should be functioning properly.

2. Consult Your System’s Data

You can find information about the estimated electricity generated by your solar panels in the owner’s manual or by contacting your solar company. Some solar installations also include a dedicated solar meter, providing essential data for both homeowners and solar installers to assess the system’s performance.

Also Read: How to Evaluate Solar Panels with 5 Key Parameters

3. Review Your Electric Bill

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Your electric bill may indicate the amount of power you exported to the grid and the amount you purchased from the grid. While it won’t directly display the total solar power generated or used in your home, you can compare your current bill with previous ones to observe any significant changes in solar panel generation.

To Understand Your Average Monthly Electric Bill with Solar Panels, you can click on this link.

4. Employ a Third-Party Solar Monitor

Installing a third-party solar monitor offers more comprehensive insights into your solar panels’ performance, including real-time data on energy production and consumption. This valuable information can help you identify any issues with your solar panels and optimize their efficiency.

5. Access Solar Monitoring Systems

Solar monitoring systems collect data and report that data back to a server. System owners can log into the monitoring platform online to see how much power their solar panels are producing. Depending on the system, you can also set up email or text alerts that ping you when PV system performance is not optimal. In case, you aren’t happy with your panel’s performance, you can use these 16 ways to increase solar panel efficiency.

6. Check Solar Monitoring Apps

Some solar companies also offer apps that allow you to track energy production, check on your solar panels, and share data with family and friends.

7. Use a Solar Inverter

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A solar inverter is like a box that takes the electricity from your solar panels and converts it into the type of electricity your home uses. It’s usually placed at the front of the house or in the garage. The inverter has multiple functions, and one of them is to show how much power your solar panels are currently generating in watts or kilowatt-hours.

By using these methods and devices, you can know how much electricity your solar panels are generating. Now, let’s also try to unravel how much energy a solar panel produce per month.

Also See: How to Read Solar Inverter Specifications

How Much Energy Does a Solar Panel Produce Per Month?

To calculate how much energy a solar panel produces per month, you’ll need to determine its daily energy output. For this, you’ll require the necessary information.

  • The Solar Panel’s Output in Watts: It shows how much energy it can generate per hour under standard conditions.
  • The Number of Peak Sun Hours Per Day in Your Area: It indicates how much usable sunlight the panel receives.

Let’s use an example with a standard 400W panel and an average of 4.5 peak sun hours per day in most parts of the US.

To calculate the daily electricity production, multiply the panel output by the peak sun hours:

400W (output) ×— 4.5 hours = 1,800 Watt-hours per day

To convert this to the standard unit of kilowatt-hours (kWh), simply divide by 1,000:

1,800 Watt-hours / 1,000 = 1.8 kWh per day.

So, a 400W solar panel can produce approximately 1.8 kilowatt-hours of electricity per day.

Now, by multiplying 1.8 kWh by 30 days, we can determine that an average solar panel can generate 54 kWh of electricity per month. This explains how much energy a solar panel produces per month. With the next question, let’s try to understand how to measure amps from a solar panel.

Also Read: How Much Power Does a 100W Solar Panel Produce?

How to Measure Amps from a Solar Panel?


After understanding how you can know how much electricity your solar panels are generating, let’s also learn how to measure amps from a solar panel. Here are several methods to carry out this measurement-

1. Calculate the Current in Amps

Find the maximum rated power of the solar panel in watts, which is usually available on the back of the panel or in the installation manual. Look for the maximum power voltage (Vmp) in volts. Then, divide the power in watts by the voltage in volts to calculate the current in amps when the solar panel is generating its maximum power.

2. Use a Multimeter

A multimeter is a versatile device that can measure various electrical properties like voltage, current, resistance, and continuity. To measure the Amps of a solar panel, set the multimeter to DC amperage, and then connect its probes to the positive and negative terminals of the solar panel. Ensure that the solar panel receives full sunlight for accurate readings.

Also See: How to Test a Solar Panel With a Multimeter

3. Use a Clamp Meter

Also known as an ammeter, a clamp meter measures the current flowing through a wire. To measure the current of a solar panel using a clamp meter, open the jaws of the meter, place one of the solar panel’s wires inside, and close the jaws. The current reading will display on the meter’s screen. If you get a negative reading or negative power values due to the meter’s orientation, it’s normal; just adjust the clamp or meter’s direction accordingly for an accurate reading.

With various monitoring options available, it’s now easier than ever to keep tabs on your solar panel’s electricity production. By utilizing the methods discussed in this guide, you can stay informed, spot issues early, and ensure your solar system performs optimally.

Source: How Much Power Does A Solar Panel Produce?


Olivia is committed to green energy and works to help ensure our planet's long-term habitability. She takes part in environmental conservation by recycling and avoiding single-use plastic.

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