German Engineering Quality

The leading engineering company for sustainability,
aiming to help our customers improve the world.

1297
Customers
700
Employees
3
Locations
3500
Projects p. a.

SIERA Expertise

We offer our customers a wide range of services in the field of sustainable energy supply. Our focus is on consulting, conception and planning of efficient systems for the use of renewable energies.

We are happy to take care of funding and permits. Our experts take care of the technical planning and accompany you until the systems are commissioned. Our strength lies in intelligent solutions that are tailored to the individual case and that function technically, ecologically and economically - and that in the long term.

Energy concepts

Geothermal energy

Wind power

Energy concepts

  • Energy concepts
  • Consulting and feasibility studies / concepts
  • Local heating networks and neighbourhood concepts
  • Energy certificates
  • Building energy / refurbishment advice
  • Advice on subsidies (BAFA, KFW, federal state programmes)

Geothermal energy

  • Geothermal energy
  • Consultation and studies, planning up to commissioning
  • Enhanced Geothermal Response Test (eGRT)
  • Design simulation of the geothermal system/underground storage tank
  • Cost estimation and profitability analysis
  • Advice on funding opportunities
  • Approval management
  • Thermohydrodynamic model calculations
  • Planning of the geothermal system on the ground side
  • Tendering and construction supervision
  • Geothermal monitoring and plant optimisation

Wind power

  • Wind power
  • Consulting and feasibility studies
  • Location analyses
  • Planning LP1+2 as well as civil engineering, eco, explosives
  • Approval procedure
  • Construction & Project Management (P)
  • Execution planning (P)
  • Grid connection planning (P)

Biomass

  • Biomass
  • Consulting and feasibility studies
  • Integration into neighbourhood concepts
  • Planning LP1+2 as well as civil engineering, eco, explosives
  • Execution planning (P)
  • Grid connection planning electricity&gas (P)
  • Approval procedure
  • Construction & Project Management

Photovoltaics

  • Photovoltaics
  • Consulting and feasibility studies
  • Shading analyses
  • Planning LP1+2 as well as civil engineering, eco, explosives
  • Approval procedure
  • Construction & Project Management
  • Execution planning (P)
  • Grid connection planning (P)

Development

Biomass

Photovoltaics

Development

Blog