Australia’s vast landscapes and sunny reputation make it a leader in solar energy adoption. However, many Australians wonder, “What happens to solar power on cloudy or rainy days?” Understanding solar panels‘ performance in less-than-ideal weather can help maximise energy production year-round. Whether living in a high-rainfall region or experiencing overcast skies, it’s vital to know that modern solar systems are designed to perform efficiently in various weather conditions.
Are you curious how solar energy can work for your property, rain or shine? At Energy Matters, we help you harness the sun’s power with innovative solar solutions tailored to your needs. Energy Matters is the leading supplier of solar quotes in Australia due to its vast partnership network of high-quality solar installers.
How solar panels work in cloudy weather
Solar panels rely on sunlight to generate electricity, but that doesn’t mean they stop working when clouds obscure the sun. Though efficiency does decrease, Photovoltaic (PV) cells capture sunlight and convert it into electricity even on overcast days. Solar panels may generate between 10% and 25% of their normal output on cloudy days.
In Australia, where weather conditions vary significantly across regions, cloudy days are common, especially during the wet season. Thankfully, technological advancements, such as high-efficiency solar panels, make solar in rainy regions a viable option.
Pro tip: Choose solar panels specifically tested for performance in diffused light to get the most out of your system in rainy climates. Check our page for our recommended solar products.
The effect of rain on solar panel efficiency
Rain does not harm solar panels; it often benefits them. Dirt, dust, and debris can accumulate on solar panels over time, reducing efficiency. A good downpour is a natural cleaning mechanism, washing away these contaminants and restoring optimal performance.
Heavy rain combined with dark clouds will reduce electricity output in terms of energy production. However, the reduction is temporary, and panels will resume full functionality as soon as sunlight reappears. For homes and businesses in high-rainfall areas, installing solar battery storage systems ensures uninterrupted power supply during inclement weather.
Solar panel efficiency in rainy regions of Australia
High-rainfall regions, such as tropical Queensland or parts of Tasmania, pose unique challenges for solar energy production. However, even in these areas, innovative technologies and tailored designs make solar a practical choice.
- Enhanced solar panels
Panels with higher solar efficiency ratings, such as monocrystalline solar panels, perform better in low-light conditions. For Australians living in rainy regions, these panels ensure consistent power generation. - Smart inverters
Modern solar inverters adjust to changing weather conditions, optimising electricity production. - Solar battery storage
Pairing solar panels with high-capacity solar battery storage systems stores excess energy generated on sunny days, which can be used during cloudy or rainy periods.
Ready to upgrade your solar systems and take your energy savings to the next level? Embrace the energy efficiency revolution by upgrading your solar systems and adding a battery or solar inverters with Energy Matters.
High-rainfall solar solutions for Australian homes and businesses
Living in an area with frequent rain or cloud cover doesn’t mean solar energy isn’t a good investment. Instead, it highlights the importance of choosing the right system.
Weather-resilient systems
Premium solar panels are built to withstand extreme weather, including heavy rainfall and hailstorms. Look for products with certifications for durability, such as the IEC 61215 standard.
Net metering
Take advantage of net metering policies to offset energy consumption during low-production times.
Optimal solar panel orientation
Proper solar panel orientation and tilt angle can maximise sunlight absorption, especially during periods of low solar intensity.
Energy monitoring tools
Advanced solar monitoring systems provide real-time data on energy production and consumption. This helps track performance during adverse weather conditions.
Hybrid systems
Combining solar panels with grid connectivity or solar batteries ensures reliable power, even during prolonged rain.
Rain and long-term solar panel maintenance
Rain cleans solar panels and reduces the need for frequent manual cleaning. In dusty or arid regions, manual cleaning can be labour-intensive. However, high-rainfall areas like parts of New South Wales benefit from natural cleaning by rainwater.
While rain is generally beneficial, periodic inspections are crucial to ensure debris, such as leaves, doesn’t block panels or drainage pathways. Proper maintenance maximises solar panel efficiency, rain or shine.
Does solar power make sense in cloudy or rainy areas?
The short answer is yes! Solar systems are still a practical and sustainable energy solution in cloudy or rainy regions of Australia. Solar radiation doesn’t disappear on cloudy days; it simply diffuses, allowing panels to continue generating electricity, albeit at reduced efficiency.
The key is investing in a system tailored to your location. Australians in high-rainfall regions can benefit from technologies that address specific challenges, such as energy storage or solar panels designed for low-light performance.
Maximising energy production in unpredictable weather
To ensure you get the most out of your solar system regardless of weather conditions, consider these strategies:
Use energy-efficient appliances
Use your energy-efficient appliances to reduce electricity usage and maximise solar-generated power.
Smart energy management
Use timers or automation tools to run high-energy appliances when solar output is at its peak.
Regular maintenance
Schedule professional inspections to clean and maintain your solar panels.
Install solar battery storage system
Store excess energy for use during periods of low production.
Use Energy Matters’ easy-to-use solar power and battery storage calculator to determine the size of your solar system with storage! Our solar calculator will generate performance information and potential savings. We can send this information to 3 of our pre-vetted and trusted local installers in your area to receive obligation-free solar quotes.
The future of solar in Australia’s rainy regions
Australia’s commitment to renewable energy and advancements in solar technology is transforming how solar systems perform in diverse weather conditions. Today’s solutions, such as bifacial panels and microinverters, are designed to optimise energy production, even in challenging climates.
Government incentives further encourage adopting solar in areas with varying weather conditions, making it an increasingly affordable option. High-rainfall solar solutions are no longer a niche product but a mainstream choice for eco-conscious homeowners and businesses.
Rainy or cloudy weather doesn’t negate the benefits of solar power—it highlights the importance of choosing the right system for your location. With the proper technology and expert guidance, Australians in all regions can enjoy reliable, sustainable energy from the sun.
Power your home with Energy Matters
Ready to power your property with cutting-edge solar solutions? Contact Energy Matters today to explore systems designed to perform in any weather. Our team of solar experts can help you get up to 3 FREE solar quotes, with no obligation from pre-qualified and vetted solar firms in your area. Let’s work together to build a sustainable future powered by clean, renewable energy.
