NABCEP Solar Associate Test 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What is the optimal tilt angle for solar panels in winter?

Latitude -15 degrees

Latitude +15 degrees

The optimal tilt angle for solar panels during winter is typically calculated by adding about 15 degrees to the site's latitude. This adjustment accounts for the sun's lower position in the sky during the winter months compared to the summer. By increasing the tilt angle, solar panels can capture more direct sunlight and reduce the angle of incidence, thus improving overall energy production.

When panels are angled more steeply in winter, they can collect more sunlight during the shorter days, maximizing efficiency and production even when the sun is at a lower altitude. This principle helps to ensure that the solar system operates effectively throughout the winter, as it can significantly enhance performance in a season when days are shorter and sun exposure is less intense.

Therefore, adding 15 degrees to the latitude to find the ideal tilt angle optimizes the energy generation potential during winter months, making this response the most accurate choice.

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Latitude -10 degrees

Latitude +10 degrees

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