SOLAR

The OMIA Foundation’s solar shed began with a basic 25W panel and has since upgraded to a 100W system, connected to durable CHINS 12V 200Ah lithium batteries. This setup provides reliable, long-term power for various uses, with the batteries offering over 4000 recharge cycles. The battery charges in three stages: bulk, absorption, and float. Absorption ensures the batteries maintain a full charge while float prevents overcharging, optimizing battery health. A Victron Energy MPPT controller monitors input and manages the charging process.

In summer, the solar shed often generates excess power, which is stored in the batteries. This setup supplies around 840Wh per day, enabling storage during sunny days and reserves for cloudy periods. With about 5,120Wh available when fully charged, the system can operate for roughly six days without sunlight. Winter conditions, however, present unique challenges. Michigan’s cold season reduces solar input by about 50%, necessitating energy-saving measures like reducing load to essential devices. The setup remains sustainable by adjusting usage based on seasonal conditions.