About us

SOLID Solar Energy Systems
SOLID Solar Energy Systems (SOLID SES) is a system engineering company that provides customer-centred turnkey and Energy Service Contract solutions for Planning and Operation of large-scale solar thermal energy systems.
SOLID brings together extraordinary knowledge, experience in market application and R&D in areas of planning and operation of large-scale solar thermal energy systems and solar thermal technologies (collectors, long term storages and heat pumps) to the benefit of our customers.
Multiple references for solar heat in industrial processes, solar air conditioning systems and integration into district heating systems were accomplished worldwide. Each of our 300 reference systems enables energy and costs savings for our customers: through the best technological solution, realized with appropriate business model, planned and operated at top quality.
As a system integrator for large-scale solar thermal energy systems, SOLID conveys customer`s needs into real-life success stories and remains its committed partner over decades.
The SOLID team - headquarter Graz
The SOLID team - headquarter Graz
The management team
The sales team
The R&D team
The construction & engineering team
The administration team
Success Stories












Franziskus Hospital Harderberg
SOLID Products
- Solar Cooling
- Solar Hot Water & Heating
- Solar District Heating





United World College of South East Asia (UWCSEA),Singapore
SOLID Products
- Solar Cooling
- Solar Hot Water & Heating


PepsiCo Gatorade
