PSD Co., Ltd. , Saitama Japan, has developed Raijin Lock (Raijin literally means the Japanese god of thunder), a patented physical security solution designed specifically for PV power plants. Launched in January 2026, the system addresses one of the solar industry’s most pressing global challenges: cable theft.

Installed inside underground conduits, Raijin Lock physically secures the heavy-gauge cable between the combiner box or inverter and the cubicle, preventing it from being pulled out from either end. By locking the cable within the conduit itself, the device delivers concealed, anti-theft protection without altering standard plant layouts.

As theft incidents continue to escalate across major solar markets—driving up insurance premiums and operational risk—the need for practical and scalable countermeasures is becoming increasingly urgent. Raijin Lock is engineered specifically for PV installations, offering a straightforward yet robust deterrent that integrates seamlessly into existing infrastructure.

In the event that a cable is cut, the remaining sections can be quickly reconnected, minimizing downtime and limiting financial impact.

The system is compatible with a broad range of conduit types and supports low-, high-, and extra-high-voltage applications. Installation can be completed by construction contractors or licensed electricians in approximately 30 minutes per location, enabling rapid deployment across both new and existing sites.

The price is 40,000 yen ($ 258) (excluding tax) per set of four units, and the company aims to sell 10,000 sets in the first year.