Presentation · EN — 23-slide Siemens Energy presentation (April 2022, marked Unrestricted) positioning the transformer portfolio around four sustainability pillars: increasing efficiency, driving the energy transition, eco-compatibility, and climate-neutral production. It walks the portfolio product by product — distribution transformers (FITformer Wind/Solar, GEAFOL) for wind and solar integration, shunt reactors for grid stabilization, HVDC transformers for long-distance transmission, voltage regulators for balancing grid utilization, and phase-shifting transformers for active power-flow management — then covers the eco-compatibility levers (biodegradable alternative insulating fluids, cast-resin GEAFOL/CARECO/CAREPOLE transformers that completely avoid oil spilling, the Sensformer notification app, and the Pretact EcoSafeT fire-safe substation concept) and closes with the factory network's sustainability initiatives targeting net-zero emissions by 2030.
The presentation opens from the climate-change situation as of April 2022: rising greenhouse-gas emissions drive climate change while global energy demand is expected to increase by up to 25% by 2040; oil leakages still lead to water and ground contamination; and customers and society increasingly expect more sustainability, backed by stricter laws and regulations.
The answer is framed as 'waste less energy and be more eco-friendly with Siemens Energy transformers', built on four pillars that structure the rest of the deck: increasing efficiency, driving the energy transition, eco-compatibility, and climate-neutral production.
Siemens Energy builds transformers with peak efficiencies that exceed local directives: best-in-class efficiency, extremely low losses during operation, and correspondingly reduced CO2 emissions in service.
The scale of the lever is quantified on the slide: increasing the efficiency of a typical 300 MVA power transformer by only 0.1% reduces the annual emissions by 650 tons of CO2.
FITformer Wind and GEAFOL convert generated wind energy to grid level: small size to fit in the nacelle or tower, extremely robust and reliable to withstand harsh weather conditions, little to no maintenance requirements, and customized for best turbine fit.
FITformer Solar and GEAFOL integrate solar energy, and are presented as extremely reliable — resistant to high corrosion, harsh weather conditions, and temperature variations.
Shunt reactors provide voltage control and reactive power compensation for volatile power grids: they optimize load flows to avoid grid extension, continuously adjust the reactor power rating to actual needs, lower reactive power demand, limit short-circuit currents, and increase grid capacity through higher active power capacity of the line.
HVDC transformers enable the most efficient transmission of large amounts of energy over long distances, connecting green energy sources such as wind parks to the grid. They adjust the voltage from the connected AC grids to the AC side of the AC/DC converters, allowing transmission of large power volumes over one power line while stabilizing three-phase grids and balancing voltage fluctuations.
Voltage regulators balance grid utilization, especially in grids facing power fluctuations from renewables: they support demand increase at off-peak periods, reduce peak demand loads (with certain accessories), improve the efficiency of power distribution, maintain the desired voltage level, and allow integration of larger volumes of renewable energy.
Phase-shifting transformers deliver active power-flow management — enforcing or blocking power flow to balance line loads and stabilize grids, protecting power lines, reducing transmission losses, and enabling bidirectional power flow. By preventing line overloads in meshed grids they increase total power flow and help avoid generation redispatch.
Alternative fluids are presented as an effective lever to increase both sustainability and safety. They have a smaller carbon footprint than mineral oil and are readily biodegradable, avoiding water or soil contamination.
They are also fire-safe — less flammable due to higher flash and fire points (higher temperature limits) and supporting tank-rupture prevention — and they extend service life: ester oils' high capability to remove water from cellulose slows paper polymerization, reducing resource consumption over the transformer's life.
Alternative fluids are available for all fluid-immersed transformers, bushings, coils, and instrument transformers.
The cast-resin families GEAFOL, CARECO, and CAREPOLE eliminate insulating liquid entirely: excellent electrical and mechanical properties with no water or soil contamination by oil leaks, and the units are completely recyclable.
They are fire-safe — self-extinguishing, with no risk of tank explosions or fires — and consume fewer resources over their life thanks to reduced transformer aging from the cast-resin insulation.
The Sensformer notification app, available for all Siemens Energy transformers, encourages fast reaction in case of potential pollution: it indicates transformer stress via load indication and raises oil-level alarm warnings in case of oil leakages or thefts.
It also minimizes power losses through performance optimization and efficiency-optimized load management.
Pretact EcoSafeT sets new standards for fire-safe substations in three levels: Essential — tank rupture and explosion-safe design; Extended — Essential combined with alternative insulation and switching technologies; and Supreme — Extended combined with special certification for the highest duty.
The concept is available for the complete transmission product portfolio.
The power transformer factory network pursues elimination of its carbon footprint with net-zero emissions by 2030 through five initiative areas. Green energy: 100% share of renewable energy, installation of PV modules, and lighting and heating optimization. Digitalization: automatization of systems to further decrease the environmental footprint, including a digital twin to increase the transformer's operational efficiency and controlled, automated lighting, heating, and cooling.
Materials: reduction of consumed material and produced waste, with material footprint considered within procurement plus direct shipping and re-use of transformer oil. Mobility: transition to electric mobility both in- and outside of production — electric forklifts and cranes, and electric-vehicle charging stations in the factory. Environment: protection of the environment and biodiversity via sustainable water infrastructure and large green areas that protect local wildlife.
The closing summary restates the promise behind the four pillars: environmental friendliness — production and operation of equipment as sustainable as possible; reduction of emissions — environmentally friendly power generation and efficient, low-emission power transmission; and increased grid reliability and load capacity.
Click any figure to enlarge.