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Homeowners who invest in adding solar panels to their homes often see many benefits. From lowering their carbon footprints, decreasing their energy bills and even increasing their home’s value, solar energy can be a boon for homeowners. However, once the solar panel system is installed, how can you be sure that your solar panels are working? Before you call in an expert to check out the panels, there are a few steps you can take to see if your solar system is working to its full potential.
4 Signs Your Solar Panels Aren’t Functioning Properly
1. Electric Bill Increasing
If you notice a sudden increase in your electric bill or your electric bills never decrease after installation, it could be a sign that your solar panels aren’t functioning properly. While you can expect your electric bill to fluctuate month to month, over time, you should notice a decrease in your electric bill thanks to your solar panels. So, if you see a costly increase, it’s best to check out the entire panel system.
Also, if you never see a decrease in your electric bills, that’s also a good sign the panels were not initially installed properly. Carefully monitoring your electric bills is a great way to catch issues early and save money in the long run. If you’re concerned, contact your solar installation company to come and check things out.
2. Inverter Displaying a Red or Orange Light
If your solar panel system’s inverter is displaying a red or orange light—don’t ignore it. These lights alert you that there is an issue somewhere in your panel system. The inverter is responsible for converting the direct current (DC) electricity generated by the solar panels into alternating current (AC) electricity, which you can then use in your home. A red or orange light on the inverter indicates there is an issue within the system, such as with the panels, the wiring or the inverter unit.
Ignoring the warning sign could lead to more costly issues in your system’s performance. That means not only could you end up paying more for your monthly electric bill, but it could also cost you more in repairs. Again, contact your solar company if you see this red light.
3. The Weather and Production Don’t Add Up
Pay extra attention to the weather reports in your area because keeping an eye on the weather can tell you a lot about your solar panel’s performance. On sunny days with clear skies, you should have optimal energy production because the panels can efficiently convert sunlight into electricity. However, if you notice a consistent pattern of low energy production on sunny days, it’s a good indication that your solar panels are not working effectively.
Cloudy or overcast days and extreme weather events like storms or heavy snowfall can disrupt energy production. You will likely notice reduced energy output, but usually not a complete reduction. Monitoring your solar panel system’s performance during different weather conditions can help you identify any potential issues.
4. The Solar Meter Isn’t Increasing
Your solar meter should provide alerts or readings that let you know if your panels aren’t functioning as they should. Check the solar meter’s kilowatt hours totals, which measure the energy your solar panels produce. If the total kilowatt hours go up, the panels are working. However, if the number stays the same, decreases or only slightly rises, there may be an issue. You should also be able to compare the solar meter readings to previous periods. Be sure to regularly monitor your solar meter to detect any increases or decreases in energy production.
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How to Know if You Need New Solar Panels
If you notice something is wrong, the answer could be a simple repair, but there are cases when it might mean panel replacement. There are several factors to weigh before deciding whether or not it’s time to replace your solar panels.
Age
Traditionally, solar panels have a lifespan of around 25 to 30 years; after this time, they become less efficient. If your panels are approaching or have surpassed this timeframe, it may be worth exploring if upgrading is right for your system.
Performance
If your monthly electric bill slowly climbs up each month or you notice a significant drop in energy production despite properly taking care of the entire system, you may want to replace the solar panels. Again, be sure to speak with your installation company first, as there is often an easier fix.
Physical Damage
If your panels have cracks, dents or broken parts, it’s time to either repair or replace these panels so that your system can work to its full potential. Again, a quality solar company can help make the call here and see if any damage is covered under your warranty.
Technological Advancements
The recent growth in the solar industry has led to newer features, more efficient and cost-effective panels and technological advancements that older systems just don’t have. If your current solar panel system is an older model, an upgrade may give you better results.
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How to Troubleshoot Your Solar Panels
- Take a hard look at your panels: The first step in troubleshooting any issues with your solar panels is to inspect each panel. Check if any dirt or debris is caught on the panel or if any of the panels are cracked, dislodged or have broken pieces.
- Check the surrounding area: Are there any branches that may be blocking sunlight from reaching the panels? Next, examine the inverter for error messages or warning lights.
- Call the experts: If you’re unable to pinpoint the problem on your own, it’s time to reach out to a solar panel professional. Even if you find a problem on your own, it’s still wise to reach out, as attempting to fix the problem yourself could void your warranty or make things worse.
Frequently Asked Questions (FAQs)
How do I know if my solar panels are not working?
There are several signs that your solar panels are not working properly. If your solar panels come with a monitoring system that tracks the energy production, you will receive an alert that there may be an issue. Also, if you notice a significant decrease in your electricity bill savings or if your home’s energy consumption is not being offset as expected, your solar panels may not be generating enough electricity. Visible damage can also be a sign.
How do I test if a solar panel is working?
If you are worried that your solar panels aren’t working properly, there are a few steps to take to test to see if the panel is generating electricity:
- Start by visually inspecting the solar panel for any cracks, scratches or pieces that have moved. Also, make sure the panel is clean and that there isn’t any debris that could block sunlight.
- Next, ensure that the solar panel is receiving direct sunlight exposure for most of the day and that trees or other structures aren’t blocking direct sunlight.
- If you have experience using one, you can use a multimeter to test the voltage and current output of the solar panel. Be sure to do this on a sunny day and do so carefully, never touching the metal probes. Set the multimeter to the DC voltage range and place the red probe on the positive terminal and the black probe on the negative terminal of the solar panel. On a sunny day, a solar panel should produce voltage within its rated range. Take into account that voltage varies throughout the day. If you don’t have experience using a multimeter, a solar panel pro can test this for you as well.
Why am I not saving money with solar panels?
There could be several reasons you aren’t saving money or seeing a return on your investment. For instance, think about what the weather has been like where you live. If your home is in an area that has inconsistent sunlight or frequent cloud cover, it’s possible that your solar panels aren’t generating enough electricity to lower your energy bills.
Another possibility is that the solar panels are not appropriately sized for your home and energy needs, that they were not placed in an area for the proper orientation and exposure to sunlight or that they were not installed properly. All three would lead to the solar panels not working to their optimal capacity and you not seeing the savings. To rule out these possibilities, have your solar panels serviced by a trained technician.