Customer story: the Jansen family
Posted on 5 min read
How the Jansen family got solar panels via SolarFast: from the first talk and roof check to install day, net metering and the first bill.
All articles
The Jansen family had the same question as many households: the energy bill was rising, and they wanted to know whether solar panels on their roof would really pay off. Friends pointed them to SolarFast. No hard sell, just a clear plan based on their roof and usage. This story covers how that went: from the first conversation and roof check to install day, the first month on the meter, and what they do differently at home now. Curious about the product itself? Start on our solar panels page.


Why solar panels
Rising energy prices tipped the balance. Not panic, just kitchen-table maths. They wanted lower monthly costs, and they wanted to know where they stood before scaffolding appeared at the door.
Friends told them how SolarFast works: look first, propose next, schedule only after that. No off-the-shelf standard package. That matched how they decide. They wanted to see whether their roof was suitable, how many panels made sense, and what that roughly meant for their own usage.
Advice and roof check
We started with a conversation about their situation. How many people live there, when someone is home, which appliances run during the day, and what roughly shows on the annual bill. Then we looked at the roof: orientation, pitch, shade from a chimney or tree, and space for cabling and the inverter.
From that we proposed a suitable system. Not the maximum number of panels that could physically fit, but a setup that matches their usage. We explained how solar panel yield roughly works, and what you can and cannot expect from an average month. Only once everyone shared the same picture did we move into planning.
The paperwork side came up too: connection, meter, and what you later see on the annual bill. So before install day they already understood how net metering plays into their situation, without promises about euros we cannot guarantee.
Install day
“Install done, walkthrough done, ready. It really can be that simple.”
The Jansen family
Within a few weeks the panels were on the roof. The installer arrived with a clear plan, materials were already matched, and there was a fixed route for cabling and the inverter. The team worked quickly without turning the house upside down.
By the end of the day the system was running. We walked through the install, showed how to read the app or portal, and what to do if a notification appears. No technical circus: show it, check it, done.
For the Jansen family that was the moment the abstract plan became real. Panels on the roof, inverter connected, and the first kilowatt-hours coming from their own roof.
Result on the bill
From the first month they saw a difference. During the day the panels covered a large share of their usage. When the sun produced more than they needed at that moment, the surplus went back to the grid. Through net metering that is later offset against draw on the annual bill, for as long as the scheme applies. How the scheme works is also explained by the Dutch government on net metering.
Important context: every home is different. Their roof, usage pattern and contract shape the result. In our quotes we always calculate with your figures, not with averages from another address. What was clear for the Jansens: the bill felt lighter, and the app showed clearly when their roof was contributing.
They quickly learned when it makes sense to run the washing machine or dishwasher. Not because they have to, but because you then use more of your own power while the panels generate. Evening use still comes from the grid, unless you add a home battery later.
Living with panels
After install day it became ordinary. Making coffee, charging a laptop, starting the dryer: small things that can suddenly run on their own power when the sun cooperates. No mission story, just a home that runs cheaper during sunny hours.
Neighbours asked how it went. How many weeks it took, whether the installer worked neatly, whether you really notice it on the bill. The Jansens answered honestly: look carefully first, then a plan, then one install day, and after that mainly getting used to the app.
A few neighbours are now considering solar panels themselves. Not because they must, but because they saw it work in practice at the Jansens. That is often how these choices go: first someone on the street who shows it, then you run your own numbers.
What you can take from this
Three things that keep coming back in this story, and that also apply to your home:
1. Start with your roof and your usage, not a standard package. 2. Ask for a clear explanation of yield, net metering and what to expect in the first months. 3. Plan the install so that same day you know how your system works and how to read it.
Solar panels are not an abstract sustainability slogan. They are a technical install with a clear sequence: advice, design, mounting, handover. Get those steps right and the switch feels simply logical.
Conclusion
The Jansen family's story is one of many installations we have completed. Every roof is different, every household too. What stays the same: we look with you first, calculate with your figures, and hand over a system that is already running the same day.
Curious what solar panels mean for your home? Put your situation to us. No obligation.
Solar panels are still a smart investment in 2026. A few things matter if you want the most from your own power.
Your energy use
Planning to drive, cook or heat electrically? Factor that into how many panels you install now.
Spread the yield
Spread panels across roof faces so you generate through the day and use more of your own energy.
Your data
Choose a system with its own 4G connection and data storage in Europe so your information stays secure.
Boost your energy
A smart home battery stores today's power for later, so you use more of your own electricity after sunset.

We install your solar panels in a day
We can often start within three weeks. A day later your panels are on the roof and everything is connected. We leave your home clean and make sure you know exactly how it all works.
- Use more of your own power during the day
- 0% VAT makes the investment even more attractive
Discover what smart energy can do for you
In about an hour you get insight into your savings, the options for your home and when the investment pays back. Straightforward, honest advice so you know exactly where you stand.
Smart energy at home
- Upgrade your home with our smart battery
- Our solar panels deliver up to 25% more energy
- A heat pump to minimise your energy use
- Charge your electric car easily at home with an EV charger
Booking an advice call is easy
Fill in your details below. Within a day we will contact you to schedule a no-obligation advice call together.






