Green transition
Total supplier of solar and battery systems
OneCo delivers everything from concept and design to installation and operational monitoring of photovoltaic, wind power and energy storage systems. We combine Norwegian engineering expertise to ensure stable, cost-effective and climate-friendly energy solutions. We can help you with:
- Turnkey solar installations and battery systems for large commercial buildings
- We take care of the installation, operation and maintenance of the solar energy systems
- We have all the necessary approvals that allow us to make it easy for you - we take care of everything from A to Z
We can make your commercial building profitable
Great unrealised value for your building
Norwegian property companies have enormous unrealised value in their buildings. Solar cell systems, possibly in combination with battery solutions, can lead to, among other things:
- Better energy class of the building
- Value increase
- A more attractive building for tenants
- Better loan terms
- Better sustainability reporting/green profile
We can install solar panels on your building and provide you with a reliable source of renewable energy. We take care of the installation, operation and maintenance of the solar energy systems.

"Thanks to OneCo's solutions and expertise in photovoltaic installations, we have installed photovoltaic systems with an output equivalent to approximately 20 megawatts of solar energy on our own buildings. This corresponds to approximately 16 GWh per year, which is equivalent to the electricity consumption of about 1,000 homes."
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Due diligence related to solar panels
For OneCo, basic human rights and decent working conditions are essential. We work systematically with our suppliers and conduct regular assessments. OneCo recognises that in trading with Chinese companies, regardless of the level of measures, there will still be a residual risk.
Would you like to read about the Transparency Act and risk assessment related to solar panels? Read more in the pdf below:

Can your project receive Enova support?
Enova has several support programmes that can be used in different building segments. These are the two most relevant for commercial buildings:
- Improving the energy performance of commercial buildings
- Energy mapping in commercial buildings
- Green and profitable