Solar Farms and Battery Storage: Securing Sites Built Where Nothing Else Is

Renewable generation gets built in exactly the places that are hardest to protect: cheap land, far from anything, with no neighbours and no passing traffic. During construction there are stacks of cable drums, inverters and transformers on an open site. Once energised, there is a facility worth millions that nobody visits from one month to the next. The loss that matters is not the scrap value of the copper. It is the outage — a cut cable run takes a string, or a whole site, off generation while a specialist crew is found, parts are sourced and the trench is reopened. The theft costs hundreds; the downtime and repair cost orders of magnitude more. Last updated: October 2026. Two very different jobs, one site Solar and battery storage sites need security twice over, and the two phases have almost nothing in common. Construction and commissioning is a classic high-value temporary site: cable drums, inverters, transformers, plant, fuel, and a workforce coming and going through one gate for a few months. The exposure is intense and short, and the site layout changes weekly. Operational life is the opposite: twenty-five years of an unmanned facility where the only visits are scheduled maintenance. The threat shifts from opportunist plant theft to deliberate, targeted copper theft — people who know what a DC cable run is worth and come equipped to take it. A system specified only for one phase tends to fail at the other. Build it so the construction deployment becomes the permanent one, rather than installing twice. Why ordinary CCTV does not fit Three practical problems rule out standard site CCTV: There is no power you can use. It is faintly absurd, but a solar farm is one of the hardest places to power a camera. The generation is DC at voltages you cannot tap, the site may not be energised for months, and the auxiliary supply is a protected system nobody will let you hang a camera off. Cameras here need their own solar and battery — see power planning. There is no broadband. The site may have a SCADA connection, but it is a protected operational network and you will not be putting CCTV on it. The camera system needs its own 4G or 5G connectivity. The perimeter is enormous. Tens of acres of fence line. Trying to cover it with fixed cameras at identification-grade resolution is unaffordable and unnecessary. The right answer is layered: detect at the fence, identify at the pinch points. A layered specification that actually works Detection along the line, not identification. You need to know something has crossed the boundary, anywhere, at any hour. Long-range detection — including thermal, which sees a person at range in total darkness and does not care about camouflage — is the right tool here, with AI classification so a fox and a deer do not generate alerts. False alarms are the thing that kills a remote site's security: once a monitoring team learns the alerts are noise, the real one gets dismissed too. Identification at the gate. Every vehicle involved in a serious cable theft arrives and leaves somehow. A tightly framed plate-reading camera on the access track is the single most valuable camera on site — see ANPR for private roads and gated sites. Eyes on the inverter stations and the BESS compound. These are the concentrated-value points. On a battery site there is a safety dimension too: thermal cameras of the radiometric type can see a temperature rise in a container or a connection before there is any visible sign of a problem. Deterrence that works unattended. Audio challenge and floodlighting triggered by a confirmed detection turns a lot of intrusions into a retreat. The footage you never need is the cheapest outcome available. Remote access that does not open the site up. A camera system reachable from the internet on a forwarded port is an unacceptable risk next to operational infrastructure. Use a VPN-based approach — see secure remote CCTV with no open ports and our PTZ with built-in WireGuard range. Reduce the number of alerts a human has to read An unmanned site generates a great deal of movement that is not a threat: vegetation, weather, wildlife, and the maintenance crew who are supposed to be there. If every one of those produces an alert, the system becomes a nuisance and then gets ignored. Doing the classification at the camera rather than in the cloud is what makes this affordable off-grid — fewer uploads means less data and less power. Our edge AI guide covers how that filtering works, and Fortix AI can add classification to cameras already on site. What to do if you are specifying now Work out the detection line, the pinch points and the concentrated-value compounds on a site plan. Assume off-grid power and your own 4G/5G from the start. Deploy during construction on rapid-deploy towers so the cameras are watching while the cable drums are still stacked, then convert the same assets to permanent positions at energisation. And insist on one number from any supplier: how many alerts a night will a person actually have to look at? If nobody will answer that, the system will be switched off within a month. Tell us the site size, the fence line and where the inverter stations sit, and we will spec the layers properly — get in touch or sketch it in the Solution Builder. Off-grid solar, 4G/5G, thermal and ANPR, hire or buy.