This common winter phenomenon is usually caused by low solar battery temperatures. Most lithium-ion solar batteries, such as Sunsynk, need to stay above ~12.5°C to charge at their full rated speed. If your solar panels are generating power faster than your battery can charge, the excess has nowhere to go but out to the grid.
Another important aspect is the placement of your solar panels to avoid shading. During winter, the sun’s path is lower in the sky, causing shadows to extend further. Be mindful of any nearby trees, buildings or other structures that could cast a shadow over your solar panels.
Freeze protection measures prevent damage to the system due to the expansion of freezing transfer fluid. Drainback systems drain the transfer fluid from the system when the pump stops. Many indirect systems use antifreeze (e.g. propylene glycol) in the heat transfer fluid.
Automated Snow Removal Systems – Some solar panel systems come with built-in heaters or other snow-melting features. These systems can help keep your panels clear of snow and ice automatically, without any manual intervention. Make sure to research and choose a suitable option for your system.
The real challenge with winter conditions is keeping the panels clear of snow and ice, which can obstruct sunlight and reduce energy production. In addition, heavy snow accumulation can put physical stress on the panels and mounting systems, potentially causing damage if left unaddressed.
It is essential to keep your panels clear to ensure optimal performance. Here are a few methods to help you safely remove snow and ice from your solar panels. Manual Cleaning – Using a roof rake or soft-bristled brush, you can gently remove snow from the panels.