How to Get Data from an EFOY Fuel Cell and a Victron Solar Controller into One Platform
Many off-grid systems today combine solar power with a fuel cell backup — and for good reason. Solar handles generation during daylight hours, while an EFOY fuel cell provides reliable power when sunlight is limited or absent. It’s an increasingly common setup in applications where uptime is non-negotiable.
The challenge is visibility. Solar data lives in one place. Fuel cell data lives in another. The people responsible for those systems are left switching between tools, or worse, with no remote visibility at all.
Insytly solves this. The IY-HUB2, paired with a custom RS232 module, connects directly to your EFOY fuel cell and your Victron solar controller. All of that data flows into a single monitoring platform.
Here’s how it works.
The Challenge with Hybrid Off-Grid Systems
EFOY fuel cells and Victron solar controllers are both excellent pieces of hardware. But they weren’t designed to talk to each other, and neither was designed with centralised third-party monitoring in mind.
For installers and system operators, this creates a real problem. You might know your solar generation figures but have no clear picture of fuel cell tank levels or stack health. Or you’re aware the fuel cell has been running, but can’t tell whether it’s performing within expected parameters without physically visiting the site.
For applications where remote access is the whole point, that gap in visibility is a significant operational risk. This includes off-grid security towers, environmental monitoring stations, and noise measurement systems at major infrastructure sites.
How Insytly Connects Both Systems
EFOY Fuel Cell via Custom RS232 Module
Insytly connects to EFOY fuel cells across the range using a custom RS232 module, delivered as part of the IY-HUB2 setup. This direct hardware connection gives you access to a comprehensive set of fuel cell data points, including:
- Fuel cell status and operating state
- Tank levels (%)
- Tank configuration
- System operating hours
- Stack operating hours
- Stack power (W), voltage, and current
- Battery voltage and current
- Various system temperatures
This level of data goes well beyond a simple on/off status. It gives operators meaningful insight into fuel consumption rates, maintenance scheduling, and early warning of potential issues. All remotely.
Victron Solar Controller via VE.Direct
For the Victron side, Insytly connects via VE.Direct through the IY-HUB2. This is the most straightforward and reliable integration method for most installations. There is also support for connection via API where required.
Insytly is a Victron Recommended Software Integrator. Insytly tests, supports, and builds the integration to the standard Victron expects from its software partners.
The most common Victron device in these hybrid setups is an MPPT charge controller. A BMV battery monitor can also be included where battery state of charge visibility is required.
Everything in One Dashboard
Once connected, all of this data flows into the Insytly platform in real time. Solar generation, battery performance, fuel cell status, tank levels, temperatures, and operating hours are all visible in a single dashboard, from anywhere.
For operations teams managing multiple sites, this means one place to check system health across an entire fleet. For distributors specifying these systems on behalf of customers, it’s a clear value-add that can be built into the solution from day one.
You can configure alerts to notify the right people when parameters fall outside expected ranges. Whether that’s a fuel cell tank dropping below a threshold, a temperature anomaly, or a solar controller fault.
Real-World Applications
This combination of EFOY and Victron monitoring is already in use across several demanding off-grid applications.
Environmental and Noise Monitoring
Off-grid noise monitoring stations require continuous, reliable power and continuous data visibility. This includes those used at major UK airports, where regulatory noise thresholds must be maintained in surrounding areas. These systems cannot afford downtime, and operators cannot afford to be blind to system health. Insytly provides the monitoring layer that keeps these installations running with confidence.
Solar Hybrid CCTV and Rapid Deploy Towers
Security and surveillance towers that combine solar with fuel cell backup are another common application. These typically deploy in locations without any grid connection, where both power reliability and remote management are critical. Insytly’s unified monitoring means the system integrator or end user has full visibility without needing to visit the site.
Why It Matters for Distributors and System Integrators
If you’re specifying hybrid off-grid systems for customers, the monitoring layer is often an afterthought. It shouldn’t be.
Customers increasingly expect to see what their systems are doing. Being able to offer a single platform covering solar, battery, and fuel cell data is a meaningful differentiator when presenting a solution. Fragmented tools are no longer good enough.
Insytly integrates with the hardware your customers are already buying. You don’t need to change the specification. You add visibility to it.
Getting Started
You need the IY-HUB2 with the custom RS232 module to connect both an EFOY fuel cell and a Victron solar controller to the Insytly platform simultaneously.
If you’re currently running or specifying a hybrid system and want to understand what unified monitoring would look like for your application, get in touch with the Insytly team. We work with both end users and distributors to ensure the integration is set up correctly from day one.
Insytly is a Victron Recommended Software Integrator. The IY-HUB2 supports direct connection to EFOY fuel cells via custom RS232 module and to Victron MPPT charge controllers and BMV battery monitors via VE.Direct.
