Panel Placement Mistakes Costing You 30% Yield
Most DIYers set solar panels at their roof pitch and lose 30% of winter harvest. Use the correct solar panel placement angle to avoid mid-winter power failure.
Correct solar panel placement angle requires two adjustments: true south orientation and a latitude-based tilt. Most homeowners mount panels flat to their roof pitch (typically 18–22 degrees), but off-grid systems require a steeper angle (Latitude + 15 degrees) to maximize winter harvest when daylight is scarce. Failing to adjust for winter sun height reduces December production by up to 30%, forcing unnecessary generator runtimes.
How many days can your system run with no sun?
Three is the off-grid minimum. Five is comfortable. Seven is bulletproof. Battery bank sizing is the autonomy calculation — the design guide shows how to do it.
CALCULATE AUTONOMY →