Protect your solar system
and household energy.
Why your solar system needs Guardexy
Your solar system is smart. And every smart system can be exploited. Up to 90% of domestic solar systems use Chinese inverters that send data to foreign clouds and can receive external commands.
Guardexy filters communication between the inverter and the internet. Dangerous commands will not pass through.
Price list for homeowners
Designed for residential inverters from Growatt, Solax, Huawei, and Sungrow with a maximum output of 20 kWp.
Guardexy without license | 3,289 CZK |
|---|---|
Electronic license 1m | 99 CZK |
Electronic license 12m | 1,070 CZK |
Electronic license 24m | 2,020 CZK |
Electronic license 36m | 2,851 CZK |
"Built on real demand. Developed in the Czech Republic. Secured by Europe."
How Guardexy works
Connect between the inverter and the internet
Plug & Play installation in minutes, without downtime or drilling.
Guardexy analyzes communication in real time
Every data flow is checked without slowing down operations.
Allows only secure transmissions
What is safe is allowed through – the rest is stopped.
Protects your energy continuously
24/7 threat detection, monitoring, and automatic updates.
Frequently Asked Questions
Why should I address this right now?
Early prevention is always cheaper than dealing with the consequences.
Because cyberattacks on internet-connected devices are increasing — and photovoltaics are no longer an exception. Most modern inverters communicate with manufacturers’ clouds (often outside the EU) and send data about your power plant. Guardexy acts as an active protective filter that prevents unauthorized transmissions and protects your investment and data.
What are the risks if I don't protect my power plant?
Unprotected PV system = an open gateway to the network.
Your power plant can be remotely shut down, slowed down, or exploited for attacks. An attacker can gain access to your home network, including computers or smart home devices, through a vulnerable inverter. Guardexy can detect, block, and report these attempts before they occur.
How do I know if my power plant is vulnerable?
Are you online? Then you are a target.
Whether you only own a mobile phone or other smart home devices: if your inverter has remote access, a cloud connection, or a mobile app, it is online – and therefore potentially vulnerable. Guardexy offers the same solution that your computer likely uses: a high-quality firewall, a shield against unwanted data traffic and commands.
Does Guardexy work with my type of inverter?
Compatibility is broad, and we are constantly expanding it.
Guardexy supports all common brands (Solax, Goodwe, Growatt, Huawei, Sungrow, etc.) and works independently of the manufacturer. It monitors data traffic at the network level – so it does not interfere with the hardware or void the warranty.
Can Guardexy, for example, slow down data transmission?
Security without compromising on speed.
The device works passively in real time – checking data flows without delay, without interfering with operations, and without affecting performance. All transmissions that are safe and authorized pass through freely.
How is Guardexy installed and who will do it?
Plug it in – and you’re all set.
Installation is plug-and-play: it simply connects between the inverter and the router (or LAN switch). Any electrician or installation company – or our partners – can handle it. The entire process takes a few minutes, without any power plant downtime.
How much does Guardexy cost and what do I get for it?
A one-time investment, long-term security.
You get continuous 24/7 protection, data transmission monitoring, automatic updates, and threat alerts. The price depends on the size of the power plant – ranging in the thousands of crowns per device. More in the “Products” section.
What happens if Guardexy stops working?
A security layer that never slows down production.
Guardexy is designed not to affect PV system operations even in the event of a failure – production continues. At the same time, the system automatically reports that it is out of service, so you will be informed of the problem in time.
How does Guardexy differ from a standard firewall or router?
A firewall for the solar world – tailored specifically for PV systems.
A router protects the home network; Guardexy protects the inverter itself. It analyzes traffic specifically for photovoltaics, recognizing the difference between normal communication and suspicious data transmission. Additionally, it detects external connections outside the EU and maintains evidence logs for audits or insurance companies.