About us

Unisun Energy BV develops and installs large scale solar assets. Based in Rotterdam, the company has delivered 44 MW of solar projects to date. Their international team combines expertise in technical design, procurement, quality control and project management to deliver long-term solar assets. Unisun Energy BV also offers O&M services through their subsidiary Uper Energy BV.

Unisun Energy is part of the Alternus Energy Group (AEG). AEG is  an international vertically integrated independent power producer (IPP).

Mission & Vision

Our mission is to provide leading EPC services for our clients by delivering solar assets that are built to last.

Our vision is to support the transition to a sustainable, renewables-based economy.


Development & Advisory

Our team handles all aspects of development such as grid connection, permitting, legal, and offtake agreements to progress projects to energisation.

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Our team can provide turnkey solar assets and have delivered more than 40MW to date. Once operational, asset management can be provided through our parent company Alternus Energy.

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Operation and Maintenance (O&M) services are the critical success factor for long term operations and profitability of solar assets. We offer these services thorugh our subsidiary Uper Energy BV.



Unisun Energy BV has developed and delivered more than 40MW of rooftop and ground mount solar projects to date.


Energised in 2022, the solar park at the Rotterdam the Hague Airport is the largest project delivered by Unisun Energy to date. This project is the result of collaboration between Unisun Energy Europe, Rotterdam The Hague Airport (RTHA), Rotterdam The Hague Innovation Airport (RHIA) and the municipality of Rotterdam. The 13.63 MWp project was installed beside the runway. Installation of the project took less than six months despite the logistical and security challenges associated with development at an airport in addition to liaising with multiple airport and aviation stakeholders. O&M services are provided by Uper Energy Europe.


Energised in 2021, Abdissenbosch Solar Farm is a 12MWp project located on a former landfill in Landgraaf, Netherlands. It supplies clean energy to power more than 4,000 households annually. It is the first project of its kind in the Netherlands. The project makes a substantial contribution to the ambition set out by Stadsregio Parkstad Limburg for the region’s energy production to be carbon neutral by 2040. O&M services are provided by Uper Energy Europe.


This 2MW rooftop project was commissioned by Van den Elzen nursery as part of their sustainability strategy. The project was installed on their warehouse in Kraanmeerstroom in 2020. O&M services are provided by Uper Energy Europe.


Energised in 2019, Rilland solar park is located in Rilland, South Netherlands. The 11.75MWp solar project shares the site with a 15MW wind farm and contains bifacial modules. It supplies clean energy to power more than 4,000 households annually. The solar park was supported by the SDE+ subsidy and contributes towards sustainability targets for the local municipality of Reimerswaal. O&M services are provided by Uper Energy Europe.s