Cracking the Code on Incident Angle Modifier (IAM) Losses Spokane, Washington

When sunlight hits solar panels at an angle, not all of it gets converted into energy. This phenomenon, known as Incident Angle Modifier (IAM) loss, can subtly but significantly impact your solar system’s performance. Let’s break down what IAM losses are, how they affect energy production, and what can be done to minimize their impact.

Understanding IAM

Solar panels are most efficient when sunlight hits them perpendicularly (at a 90° angle). However, as the sun moves across the sky, the angle at which sunlight strikes the panels changes.

• When sunlight strikes at an angle, some of it reflects off the panel’s surface instead of being absorbed.
• The greater the angle, the more sunlight is lost, especially during early mornings and late afternoons.

IAM losses are a natural limitation of solar technology, but smart system design can reduce their effect.

Impact on Morning and Evening Production

IAM losses are particularly noticeable during mornings and evenings when the sun is lower in the sky.

• Morning: Panels are not yet receiving sunlight perpendicularly, so energy output is reduced.
• Evening: As the sun lowers again, a similar drop in efficiency occurs.

Over time, these reductions can add up, slightly lowering your system’s total annual energy production.

Solutions to Minimize IAM Losses

While IAM losses can’t be entirely eliminated, thoughtful design choices can significantly reduce their impact:

1. Optimize Tilt and Orientation: Aligning panels to face the equator and tilting them based on latitude maximizes sunlight capture at midday, compensating for IAM losses during off-peak hours.
2. Panel Spacing: Ensure panels are spaced to avoid shading from nearby panels or structures, especially when the sun is at a low angle.
3. Anti-Reflective Coatings: Many modern panels come with coatings that reduce reflection and improve energy absorption even at non-perpendicular angles.
4. Dual-Axis Tracking Systems: For larger systems, installing trackers that adjust the panel angle throughout the day ensures sunlight always hits at the optimal angle.

Let Independent Power Generation Optimize Your System

At Independent Power Generation, we design and optimize solar systems to account for IAM losses. Through detailed site analysis and cutting-edge technology, we ensure your system achieves maximum efficiency and reliability.

Schedule a Consultation Today!

Want to get the most out of your solar panels? Contact Independent Power Generation to schedule a consultation. Our team will assess your system and recommend solutions to reduce IAM losses and boost your energy production!