East-West Split Arrays vs. Single Axis Tracking: Which Is Better?

East-West Split Array Advantages

East-West Split Arrays are a popular choice for off-grid homes due to their straightforward installation process and cost-effectiveness. By splitting the array into two sections, one facing east and one west, the system can still capture a significant amount of solar energy during the morning and afternoon hours, when the sun is lower in the sky. In a typical East-West Split Array configuration, you can expect to lose around 20-25% of the total energy output compared to a single axis tracker, but the savings in upfront costs and installation time can be substantial.

East-West Split Array vs. Single Axis Tracking

When comparing East-West Split Arrays to Single Axis Tracking systems, one of the key differences is the level of complexity involved. Single Axis Trackers are designed to follow the sun’s movement throughout the day, maximizing energy output by adjusting the panel angle as needed. However, this requires a more sophisticated tracking system, increased maintenance, and a higher upfront cost. In contrast, East-West Split Arrays rely on a static configuration, which simplifies the installation process and reduces the need for ongoing maintenance. A typical Single Axis Tracker might cost around $10-15 per watt, whereas an East-West Split Array system could be assembled for as little as $5-8 per watt.

Choosing the Right System for Your Needs

To determine whether an East-West Split Array or Single Axis Tracking system is right for your off-grid home, consider factors such as your budget, energy needs, and local climate. If you’re looking for a cost-effective solution with a relatively low upfront investment, an East-West Split Array might be the better choice. However, if you’re willing to invest in a more advanced tracking system and require maximum energy output, a Single Axis Tracker could be the better option.