Optigrün-Solar FKM is an extensive solar green roof system. It enables a sensible combination of photovoltaics and green roofs. The installation can be carried out without roof penetration due to the load-bearing construction. In addition to sustainable energy generation, the system is characterised by its runoff delay. This contributes to a reduction in the peak runoff coefficient. 

Ecological value
Maintenance costs
Target prices Solar FKD Solar mounting frame for Solar FKM, from* plus green roof (retention roof Meander 30), from**	€/m² €/Wp €/kWp €/module 73 0.37 365 146 28 0,14 140 56

*  For 1,000 m², net, material (base plate, bracket, rail system) incl. installation, without PV modules.
** Green roof guide prices for 1,000 m², net, incl. installation, material varies from region to region.

• Flexible inclination angle: Optionally 10°, 15° or 20°.
• Individual alignment: South or east-west alignment possible.
• Flexible module mounting: Mounting in portrait or landscape format.
• Drainage plate FKM: Ensures a significant reduction of the peak runoff coefficient.
• Drainage plate FKD: Reduces the amount of substrate required for the solar elevation supported by ballast by increasing the load application area.
• Low ballast: Suitable for roofs with limited load-bearing capacity.
• Modular system design: Can be used for new and existing buildings.
• Durability: Weather-resistant materials for a long service life.
• Reliability: no roof penetration to avoid water damage
• Low follow-up costs: easy maintenance

A central element of the Optigrün-Solar FKM system is the drainage function, which is optimised by the Meander Water Retention Board FKM 30. This ensures that the rainwater flows over a longer distance and is discharged at a reduced rate at the outlet. This significantly reduces the peak runoff coefficient. The roof surface is drained at a considerably lower speed than a gravel roof or a green roof with conventional extensive planting, for example. This relieves the burden on public drainage facilities during heavy rainfall events and protects against flooding resulting from insufficient system capacity.

The even distribution of water ensures an optimal supply for the green roof. It helps to improve the microclimate by increasing evaporation and thus lowering the ambient temperature.

The Optigrün-Solar FKM system can be used flexibly – both for new buildings and for retrofitting existing buildings. It integrates photovoltaic modules and extensive greening without penetrating the roof, thus promoting the sustainable use of urban roofs.

• New buildings with extensive greening
• Existing buildings that are retrofitted with green roofs
• Commercial and industrial buildings with suitable flat roofs
• Residential buildings with sustainable energy concepts
• Buildings in urban areas to improve the microclimate

The Optigrün-Solar FKM system transforms your roof into a multifunctional surface on which photovoltaics, green roofing and rainwater control work together efficiently. This allows you to generate sustainable energy, improve the water balance and create a future-proof solution for ecological construction. Our team of experts will plan and implement your Optigrün-Solar FKM roof – whether for new buildings or for retrofitting existing roof surfaces.

Contact us by phone on +49 7576 772 284 or by email at solar@optigruen.de to work together to implement a sustainable and efficient solution for your building. We look forward to redesigning your roof together.

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