In this report, Canstar Blue explores issues that can stop solar systems from fully functioning. This guide might help you identify potential causes if your solar panels are not working.
Determining what causes solar systems to malfunction can sometimes be difficult to pinpoint, even when there are warning signs. Fortunately some problems surface more often than others which can be useful to remember for when your system fails.
Canstar Blue can reveal six common solar panel problems to watch out for that could help identify the root cause. Trying to repair electrical issues in solar systems is not recommended without hiring a licensed professional. Always ask a licensed solar installer to perform electrical repairs on the system.
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How do I know if my solar panels are working?
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Electricity bills are not always necessarily the best way to monitor solar panel performance. Seasonal fluctuations in production, changes in usage or daily supply rates and different household usage are some of many factors that can affect electricity bills and bring a change in costs.
A simple way to understand system status updates is to purchase a solar monitoring system, which can report output data and immediately alert users of system changes. Regularly checking the solar meter display can also help keep a tab on energy output in real time.
Compare solar plans and providers
Here are some of the cheapest solar-specific deals from the retailers on our database. These costs are based on the Ausgrid network in Sydney but prices will vary depending on your circumstances. We show one product per retailer, listed in order of lowest price first. Annual price estimates assume general energy usage of 3900kWh/year for a residential customer on a single rate tariff. Price estimates exclude solar feed-in tariff credits. These are products from referral partners†. Our database may not cover all deals in your area, and please check retailer websites for up to date information.
Here are some of the cheapest solar-specific deals from the retailers on our database. These costs are based on the Citipower network in Melbourne but prices will vary depending on your circumstances. We show one product per retailer, listed in order of lowest price first. Annual price estimates assume general energy usage of 4000kWh/year for a residential customer on a single rate tariff. Price estimates exclude solar feed-in tariff credits. These are products from referral partners†. Our database may not cover all deals in your area, and please check retailer websites for up to date information.
Here are some of the cheapest solar-specific deals from the retailers on our database. These costs are based on the Energex network in Brisbane but prices will vary depending on your circumstances. We show one product per retailer, listed in order of lowest price first. Annual price estimates assume general energy usage of 4600kWh/year for a residential customer on a single rate tariff. Price estimates exclude solar feed-in tariff credits. These are products from referral partners†. Our database may not cover all deals in your area, and please check retailer websites for up to date information.
Here are some of the cheapest solar-specific deals from the retailers on our database. These costs are based on SA Power network in Adelaide but prices will vary depending on your circumstances. We show one product per retailer, listed in order of lowest price first. Annual price estimates assume general energy usage of 4000kWh/year for a residential customer on a single rate tariff. Price estimates exclude solar feed-in tariff credits. These are products from referral partners†. Our database may not cover all deals in your area, and please check retailer websites for up to date information.
Six very common solar panel problems
1. Breaker switch malfunction
If breaker switches fail to control home electrical flow they can prevent solar energy from reaching household appliances.
Troubleshooting simply involves opening the breaker box and checking whether any switches were accidentally turned off. Simply turn back on any that have turned off. Sometimes it may be necessary to turn all breaker box switches off before turning them on again. If this does not fix the issue call a professional electrician for further investigation.
2. Dirt or shading
Any object that blocks sunlight can impact on solar panel output because panels use the sun to produce energy. Contaminants can include built-up dirt, debris or shade from surrounding vegetation or structures.
Removing dirt and debris is one potential solution if your solar panels aren’t working. It also helps to regularly have solar panels professionally serviced.
3. Inverter issues
Solar inverters are designed to convert direct current (DC) electricity from solar panels to alternating current (AC) that home appliances consume. Without undergoing this conversion process electricity created from solar panels is practically useless.
Contact your solar installer or manufacturer directly if you believe this is the issue. Maintaining the same energy output might require replacing the inverter within the solar panel lifespan. Inverters are usually not as durable as solar panels.
Read more: What is the best solar inverter for my home?
4. Micro cracks
Micro cracks are a type of solar cell degradation that can cause systems to become less efficient and lower performing. Photovoltaic (PV) module production or seasonal and thermal conditions can contribute to degradation. Cracks will continue to grow, requiring repair or replacement before solar electricity generation can return to normal.
Correctly repairing or replacing solar panels requires a professional and doing the work yourself is not recommended.
5. Installation issues
If your solar system is not producing as much as expected, then there may have been a mistake or misconnection during installation that causes the system to malfunction or reduce output. Do your homework before installation to find a qualified installer.
An expert can diagnose the issue and fix it. Make sure the system is working properly before the specialist leaves to avoid extra delays and callout fees.
6. Broken panels
Solar panels require a significant upfront investment. If a panel is broken, depending on your setup and the type of inverters that were installed, it could impact on the whole system.
Depending on what’s wrong with the panel, performing repairs can be difficult and replacement may be the best option. Take a moment to understand exactly what the solar PV system warranty covers.
Your best bet in this situation is to contact a professional to determine whether or not the panel is broken, if it is repairable and what the best next step is.
Read More: How to choose the right solar panels for my home
Can I fix my solar system myself?
If your solar panels aren’t working, any system electrical work needs to be performed by a licensed professional. It is not recommended for homeowners to repair their own solar systems without assistance from a solar manufacturer, installer or qualified solar electrician.
Homeowners can safely identify some issues through checking the breaker box, clearing obstructions around the panels and checking with flashing lights on their solar installer. However, all repairs and upgrades to the system need to be conducted by a licensed professional. It may be best to call your installer and ask for advice if you need assistance. Alternatively, your installer may have a helpline listed on your invoice which can be called when there is an issue.
Image source: Wichien Tepsuttinun/shutterstock
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