Customer stories
In spring 2024, solar cells were installed on the roof of Warbo's commercial building in Røyken Næringspark. One year later, SundayOS shows that the facility is delivering solidly — and both the building owner and the tenant are satisfied.
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“We wanted to contribute to the green shift, and now we see that production from the plant is really picking up,” says construction owner Jan-Erik Warbo. “Norway needs more renewable energy, and photovoltaic plants in buildings like this are an efficient way to build new power — without encroaching on nature.
Together with Henriette Sole-Warbo, he is co-owner of the property company Warbo, which leases the premises to Certex — a leading supplier of wire ropes and lifting equipment in Norway.
The solar photovoltaic system has an installed power of 288 kWp, and during 2024 has produced 225,000 kWh. This corresponds to almost 30% of the total electricity consumption in the building.
Certex has clear sustainability goals and is actively working to reduce its climate footprint. The photovoltaic system is a concrete measure that contributes to this.
“We have days where the entire consumption is covered by the electricity from the roof,” says Kjell Fredrik Myklegard, Operations Manager at Certex. “It feels good to know that we produce clean energy at the house.
In addition, production data from the solar plant is displayed live on a screen in the building — something several of Certex's customers have shown interest in.
The plant is delivered as Solar as a Service — a solution in which Sunday Power, together with energy company NTE, is responsible for both investment, installation and operation. Warbo puts the roof surface at its disposal and produces local, renewable energy without the need for equity.
“For us, it was crucial to get a partner with expertise in solar energy,” says Henriette Sole-Warbo. “Sunday Power handles the entire delivery and ensures that we get the maximum out of the roof - both in terms of production and value.
Throughout the year, the facility has been followed up with automatic monitoring and annual inspection. Owners have full visibility in SundayOS — the software that provides visibility into production, consumption and savings.
“SundayOS gives us good control, and it's reassuring to see that everything is going as it should,” Warbo says.
For Sunday Power, the project with Warbo and Certex is a good example of how both owners and tenants can be involved in producing sustainable energy — directly on their own roofs.
“This is exactly the kind of cooperation we want to promote,” says Rikard af Ekenstam, CCO of Sunday Power. “Owner and tenant play in teams, and the result is more renewable energy - without natural intervention and without capital binding for the owner.
“In addition, this is a solution that is optimized to extract the most power out of the available roof space, with high production and efficient operation - all benefits,” he says.
Read also: L. A. Lund and Sunday Power enter into partnership
