08/24/2026
❄️ Full sun in June, when the sun sits high in the sky, is easy. Full sun in December, when the sun sits at its lowest point of the year, is the real test.
Here's the part worth understanding: even a properly designed system, with zero shading issues, is never going to produce as much in December as it does in June. That's not a flaw, it's physics, shorter days and a lower sun angle limit winter generation no matter how good the design is. This is exactly where net metering matters. Your summer surplus doesn't just disappear, it's banked as a credit and carried forward for up to 12 months, so the extra energy your system sends back to the grid in June is still working for you when generation naturally drops in December.
A few questions worth asking whoever designs your system:
☀️ Has shading been modelled at winter sun angles, not just in summer?
🌳 Are there trees, chimneys, or nearby rooflines that could cast long shadows once the sun drops to its lowest point of the year?
📊 Can they show you a month-by-month production estimate, not just an annual average, so you can see how the system is expected to perform in December specifically?
🔋 Is the system sized with net metering's 12-month credit cycle in mind, so summer surplus is actually being put to use rather than wasted?
The summer photo sells itself. The winter numbers tell the truth. Net metering is what closes the gap.