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Whatever your plans are.  

SPIE SAG – Your reliable partner for projects of any size.  


  • With high-pressure to the lineWith high-pressure to the line

    With high-pressure to the line

    A biogas and composting facility had to be connected to the Mittelhessen line. The tight schedule posed the biggest challenge.

  • New electrical engineering for Waldbröl HospitalNew electrical engineering for Waldbröl Hospital

    New electrical engineering for Waldbröl Hospital

    SAG branch in Waldbröl carries out the extensive redevelopment of electrical engineering during operation.

  • Installing ground wires – with the power still onInstalling ground wires – with the power still on

    Installing ground wires – with the power still on

    SAG Elektrovod was commissioned to dismantle a 20-kilometer ground wire of a 400 kV line and replace it with a new combined fiber-optic cable with 24 fiber bundles.

  • Construction and upgrading work in FrimmersdorfConstruction and upgrading work in Frimmersdorf

    Construction and upgrading work in Frimmersdorf

    In the space of just six months, SAG carried out extensive construction and upgrading work to secure the supply to the public grid and the Garzweiler open-cast mine.

  • Light into Frankfurt’s Ostend DistrictLight into Frankfurt’s Ostend District

    Light into Frankfurt’s Ostend District

    The SAG branch in Langen was responsible for ensuring the Osthafenbrücke Frankfurt was cast in its best light.

  • Colourful Tunnel LightingColourful Tunnel Lighting

    Colourful Tunnel Lighting

    The needs of human beings and bats were a top priority of the SAG lighting project for the Nordbahntrasse in Wuppertal, Germany.

  • Ready to balanceReady to balance

    Ready to balance

    Stadtwerke Schwerin are able to use unused energy in a sensible way on the premises of the Schwerin-South thermal power station. Thanks to strong support from SAG Erwin Peters.

  • 68-ton mast on a truck crane68-ton mast on a truck crane

    68-ton mast on a truck crane

    A unique contract awaited the cable engineers in Ergolding: three masts were each to be raised by three meters.

  • District heating on a rollDistrict heating on a roll

    District heating on a roll

    Karlstein regional office lays district heating route directly under a bridge over the River Main in the center of Aschaffenburg.

  • Replacement of electrical components Replacement of electrical components

    Replacement of electrical components

    The switchover of the cable and switching stations, and the commissioning process had to be done within just one week.

  • 1.11 Megawatts on the roof1.11 Megawatts on the roof

    1.11 Megawatts on the roof

    23,000 square meters of roof surface should not be unused thought the Deutsche Bahn and had a photovoltaic system installed on top of their hall.

  • High performance undergroundHigh performance underground

    High performance underground

    SAG in Budapest shows how to integrate a 5-storey transformer station into the cityscape without it being noticed.

  • Two in one sweepTwo in one sweep

    Two in one sweep

    In only eleven month the SAG implemented a 12 kilometer extra-high voltage line, 47 steel masts and the reconstruction of a 400-kV substation – and at the same time secured the energy supply for East Slovakia.

  • Together we are strongTogether we are strong

    Together we are strong

    Can two substations be installed and commissioned at the same time? Yes, we at SAG can.

  • New wind in the power networkNew wind in the power network

    New wind in the power network

    State-of-the-art technology combined with know-how transforms wind into energy. At the Polish lake of Ostrowo, SAG implemented a large project with a total of 17 wind turbines.

  • 250 kilometre of transmission line fitted250 kilometre of transmission line fitted

    250 kilometre of transmission line fitted

    SAG provided more power for the existing 38 kV high voltage line with two newly installed electrical circuits. The A37 had to be crossed and several reconstructions had to be carried out.

  • Smart MaintenanceSmart Maintenance

    Smart Maintenance

    Maintenances processes can be optimized if supported by IT. During an evaluation process concerning the status of the gas pressure regulator systems, SAG has shown how it's done

  • Spectacular lightingSpectacular lighting

    Spectacular lighting

    SAG has equipped a light art stage in Bochum with 320 meters of strip lights and therefore, it has highlighted anew a popular pub district.

  • Technology from one sourceTechnology from one source

    Technology from one source

    On Gut Lanken, SAG Erwin Peters connected the biogas system to the E.ON natural gas grid.

  • 600 kilometres of broadband network600 kilometres of broadband network

    600 kilometres of broadband network

    STT-FRANCOMAT, an affiliate of SAG Thepault, expands the broadband network in the province of Haute-Marne with the latest installation techniques.

  • Efficient actionEfficient action

    Efficient action

    After a big thunderstorm in the summer of 2011, SAG was called for fault clearance as competent partner.

  • Innovative installation systemInnovative installation system

    Innovative installation system

    SAG Thepault has proven an innovative engineering spirit during the installation of 225 kV high voltage cables under the streets and homes of Marseilles.

  • Surmounting all obstaclesSurmounting all obstacles

    Surmounting all obstacles

    In Ireland, SAG demonstrated how to cross three very busy transport routes with one overhead line without disrupting the traffic.

  • All wheels are turningAll wheels are turning

    All wheels are turning

    It needs a ton of energy to produce 350,000 tons of paper annually. SAG Hungaria created the necessary infrastructure.

  • Safety all along the lineSafety all along the line

    Safety all along the line

    Higher safety underground was the aim of the modernisation of the lighting systems of two Nuremberg underground lines.

  • Integrated engineering servicesIntegrated engineering services

    Integrated engineering services

    It is a complex and demanding task to restructure existing power networks from 220 kV to 380 kV. SAG happily faced the challenge.

  • With helicopters and muscle powerWith helicopters and muscle power

    With helicopters and muscle power

    SAG Elektrovod replaced 30-year-old conductors-insulators in the rough terrain of the Great Fatra.

  • XXL district heatingXXL district heating

    XXL district heating

    When the largest airplane in the world, the Airbus A380, is being serviced in Germany's largest industrial hall, it needs a heat supply that will do the job.

  • In the undergroundIn the underground

    In the underground

    In order to ensure power supply to the Czech city Brno, SAG Elektrovod installed a new 110 kV line - in a central duct running 35 meters below the city.

  • Safe operation guaranteedSafe operation guaranteed

    Safe operation guaranteed

    For this industrial company, uninterrupted power supply is even during renovations highly important. SAG ensured on-going operations at TOTAL.

  • A modular structureA modular structure

    A modular structure

    The Centre for GeoInformation Technology (CeGIT) of SAG develops software solutions for the customer relationship management of RWE Vertrieb AG and RWE AG.

  • Fast implementationFast implementation

    Fast implementation

    E.ON requested more pressure for its underground gas storage facility in Zsana. This wish was swiftly satisfied: SAG Hungaria erected the necessary substations within a few months.

  • Power for the lanternsPower for the lanterns

    Power for the lanterns

    The French city of Besançon wants to its streets and alleyways to shine in a new light. SAG Vigilec takes on the task of modernizing the lighting network.

  • Winds of ChangeWinds of Change

    Winds of Change

    When it comes to the realization of the energy transition, SAG is the right partner. Like at the high-performance Bedburg Windpark, with a capacity of 24 MW.

  • SAG enables expansionSAG enables expansion

    SAG enables expansion

    The current substation in Kelsterbach was replaced with a modern indoor substation installation facility to make way for the new runway at Frankfurt airport. SAG dismantled all overhead power lines, which were replaced by cable supplies.

  • Comprehensive all-round packetComprehensive all-round packet

    Comprehensive all-round packet

    The most modern gas and steam power plant in the world at the Ingelheimer Aue location required a corresponding gas pressure regulation and measurement system. SAG took care of it.

  • An (almost) self-sufficient supply systemAn (almost) self-sufficient supply system

    An (almost) self-sufficient supply system

    The medical specialist centre is using only 10% of its needed energy from the grid. SAG took care of the remaining need by installing smart grids

  • A special kind of cable installationA special kind of cable installation

    A special kind of cable installation

    How do you secure the energy supply of a research lab 500 meters deep? SAG subsidiary Thepault got to the bottom of the question.

  • Operational management via ISDN and DSLOperational management via ISDN and DSL

    Operational management via ISDN and DSL

    Thanks to modern online technology, SAG is able to handle operational management of substations that is hundreds of kilometres away.

  • Proving turnkey competenceProving turnkey competence

    Proving turnkey competence

    SAG Hungaria and SAG Erwin Peters planned, supplied and installed the turnkey electrical and control technology for the expansion of a brown coal power station in Hungary.

  • Work while others are sound asleepWork while others are sound asleep

    Work while others are sound asleep

    The stream of visitors during trade fair periods required shorter cycles of the underground traffic. Therefore, the power supply had to be increased - during the night and during short shut-down periods.

  • Strong togetherStrong together

    Strong together

    During the new construction of a 110 / 380 kV line for the network operator Amprion, SAG has proven its competences in handling major line construction projects.

  • Everything has been thought ofEverything has been thought of

    Everything has been thought of

    The photovoltaic facility in Tornal'a consists of three independent solar power plants. They are all connected through a joint substation - thanks to SAG Elektrovod.

  • Modern power gridModern power grid

    Modern power grid

    SAG Vigilec provides a qualitative better power grid in the French province of Allier. At the same time, the modernization contributes to the beautification of the landscape.

  • Full steam aheadFull steam ahead

    Full steam ahead

    SAG Erwin Peters provided safe operations of the gas compressor system when the gas and steam turbines of RWE were expanded at the Lingen power plant location.

  • Quality countsQuality counts

    Quality counts

    The properties and quality of biogas must be precisely documented. For this purpose, on behalf of Deutsche Energie-Agentur, SAG has developed a biogas register.