Case Study: a homeowner in La Rochelle preserves a historic mill while powering it with Sungrow rooftop solar microinverters

Homeowner in La Rochelle powers a historic mill with Sungrow’s 3.4 MWh annual rooftop PV system

A homeowner in La Rochelle, France, sought to install a solar system on a historic mill but faced a challenge: the building's thick stone walls severely hampered Wi-Fi signals, which were crucial for system monitoring. Sungrow provided a solution using its S450S, S800S, and S1600S microinverters, chosen for their advanced performance and connectivity.

Sungrow's microinverters featured a high-performance Wi-Fi module that successfully penetrated two layers of thick stone walls, maintaining a stable signal strength of -70 dB over a radius exceeding 11.5 meters. This enabled seamless monitoring without altering the historic structure. The 2.85 kW AC system now generates an estimated 3.4 MWh of clean energy annually, preserving the mill's heritage while securing its sustainable future.