Field test: PV Modules

A real world comparison between Mono, Poly, PERC and Dual PV Modules.

Total solar yield: --
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Installation date: 09-03-2020

* This is a field test and the results are specific for this installation on this location please research which is the best solution for your own situation as the results can be different based on environmental influences.

Total solar yield as of 27/03/2023 when the results were reset:
Mono: 9158 kWh
Split-cell: 9511 kWh
Poly: 9113 kWh
Perc: 9471 kWh
Perc-east: 1970 kWh
Perc-west: 1730 kWh

One million active users for VictronConnect!

How our app became a pocket powerhouse

In 2015 we set out to create the world’s best mobile power-management app.

VictronConnect has a million active users – but what can it do for you?

The VictronConnect App allows intuitive monitoring, configuration and updating of Victron devices – straight from a phone or tablet.

It’s a Pocket Powerhouse which connects you to your power system locally using Bluetooth, USB, Wifi, LAN – or via the internet from wherever you are in the world.

The simple-to-use VictronConnect app puts power in the hands of users and engineers alike – providing:

Continuous development

The VictronConnect team are continually expanding the capability of what is already the most comprehensive power management app in the world. We’ll take a look at what’s coming in early 2024 in a moment – but first let’s look back at what’s already been achieved.

VictronConnect – it began with an idea

Back in 2015 the ColorControl GX provided a visual representation of the installation data, but the potential for user-experience had yet to be explored.

Coincidentally, at about the same time a young software engineer in Spain – Jesús Pérez – had just blown up his microwave whilst experimenting with a PV energy system he’d bought for a bargain price. His next move was to invest in Victron Energy devices which allowed him to develop his own system configurations using Victron’s open-source software.

He didn’t waste much time. Reconfiguring a redundant internet router he engineered it to gather information from Victron devices – just as if it were a Color Control GX-  and send system data to his personal cloud storage, website and phone.

Writing a blog about how that had been achieved was enough to secure him employment with our software development team!

On his way home from the office one day, on a hunch he bought an Android to USB adaptor and worked through the night on what he describes as a ‘nerdy project’ to enable his BMV700 battery monitor to present data on his phone.

His colleagues found the idea so interesting that some weeks later he was offered the opportunity of taking over the development of our nascent VictronConnect app from the out-sourced consultants and re-building it from scratch, in-house.

Key Milestones in the development of VictronConnect

[Click to enlarge image]

Jesús Pérez laments that so many years work can be summed up in so few words – but here are the key milestones in VictronConnect development story!

Beta Testers

There have been many more incremental enhancements along the way. Each is rigorously tested in house, and then released to our 1000-or-so beta testers – whom we’d like to take this opportunity of thanking.

Speaking about the achievements which Jesús and his team are most proud, he says:

With a million active users, I’m pleased we have so few user-problems or complaints. We work hard to ensure that the app works faultlessly – even though so many phones on the market use non-standard hardware and system protocols.

And I’m amazed at how normal it is nowadays for installers to configure a system with this simple tool. Not many years ago it was necessary to use complex tools and a laptop (with all the attendant irritations, like finding a power socket because the laptop battery was low…) when commissioning a system – whatever brand it was. And performing firmware updates was even more complicated.

Now you just stand in front of the installation with a phone and in a few clicks you can set up anything from small- to industrial-sized installations.  In fact using Victron equipment with VictronConnect you don’t even need to be in front of the installation – your colleague can do it remotely from the office while you’re tightening the last bolts!

I think VictronConnect had a lot of to do with that. And innovations in user-experience have pushed standards higher across the industry.

Coming soon: Settings Lock

Let’s take a look at the next VictronConnect feature release – due early 2024.

Settings lock resists alterations being made to the programming of an installation by introducing password access.

It will still be possible for users to access their data, of course, and to implement changes which don’t affect the system’s performance.


Installers will not need to remember their password as it is stored remotely in the VRM cloud. Remote installations having only intermittent internet connection, or none at all – or installations which are not registered on the VRM platform – can be protected by the installer-password feature.

Full details of this new feature will be announced soon.

With One million active users – what better time to meet the developer!

My name is Jesús Pérez, and since 2014 I have worked as a software engineer at Victron Energy.

My first task upon joining the company was the redesign of the Color Control GX user interface, a design that the rest of the GX products have inherited. Although I continue to collaborate with the interface and other pieces of software for GX products, the project that occupies most of my time is VictronConnect in which I play the role of product owner and lead developer.

I grew up in Torrent, a town 10km from the city of Valencia where I studied software engineering. There I worked for several years in the IT department of a container terminal in the port of Valencia. Until I made the decision that it was not yet time to settle down and I went to live in Reading (England) where I lived and worked for a year.

In the United Kingdom, I lived great moments, I met many people, as well as British culture and many others. This gave me good tools and experience for my next stage, moving to Groningen, Netherlands.

My interest in technology arose in me as a child, I remember being fascinated watching how my father fixed that old television, taking readings with a multimeter until he found out which component was failing, then he replaced it and voila, it worked again!

My main passion has always been technology in general and computing specifically. Whenever I can I work on a personal project related to it. One of these projects, a monitoring software for my brand new BMV-600 caught the attention of Matthijs Vader, who contacted me to write about my project on this very blog and the rest is history…

Another of my hobbies is cooking, I like to challenge myself to cook dishes from my favorite restaurants at home and I don’t stop until I match the flavor, although I have to say that most of the time I end up surpassing it.

So in my free time you will always find me with a laptop or a frying pan in my hands, as long as I am not busy with what I enjoy most in my life: spending time doing any activity with my family.

I currently reside in Valencia where I have finally settled down and live happily with my wife Mónica and my 21-month-old son Alonso.

At home we are never bored. My wife and I are a great team and one of us always has some crazy idea in mind that keeps the whole family busy.

Something we also love and try to do as much as we can is travel by road, with a vaguely defined destination without scheduled intermediate stops, spending the night in the places we find most interesting.

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Chilling in the Caribbean
Teamwork secures Fronius award

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