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The global merging unit market is expected to grow at a CAGR of 5.4% during the forecast period, from an estimated USD 367.4 million in 2025 to USD 477.7 million in 2030.

The need to merge units is on the rise due to the growing preference for digital substations that meet the IEC 61850 standards, which provide quicker, more dependable, and accurate measurements of voltage and current transfer. The modernization of aging infrastructure is undertaken by utilities and grid operators to enhance grid reliability, operational efficiency, and remote monitoring. The rising need to integrate renewable sources of energy and smart grid technologies contributes to the demand for precise real-time information, which is offered by merging units (MUs). Moreover, they are cost-effective due to their capacity to cut copper wiring, ease the design of substations, and facilitate modular and scalable deployments. Incentives through regulations and infrastructure further promote adoption worldwide.

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The merging unit market is characterized by large international players with operational presence worldwide, as well as local players commanding a strong supply network in the domestic market. Leading players in the merging unit market include GE Vernova (US), Hitachi Energy (Switzerland), Arteche (Spain), Schweitzer Engineering Laboratories, Inc. (US), and Ingeteam (Spain). These players have incorporated organic and inorganic growth strategies, including product launches and expansions, to boost their position in the merging unit market.

For instance, in January 2024, Hitachi Energy launched the SAM600 3.0 as a modular process interface unit that can serve both as a merging unit or a switchgear control unit within substations. The device integrates analog signals from instrument transformers into IEC 61850 digital data and interfaces with breakers and switches to reduce copper wiring requirements and streamline substation architecture. It supports IEC 61850 Edition 2.1 and IEC 61869 standards, enables flexible indoor/outdoor configurations, provides high-accuracy analog inputs, direct breaker tripping, enhanced cybersecurity, and a WebUI for diagnostics, with engineering streamlined through the PCM600 tool.

GE Vernova (US):

GE Vernova is a global energy company that serves power, wind, and electrification solutions. The company is a spin-off of General Electric Company’s energy businesses. It includes the Renewable Energy and Power business. General Electric delivers transportation infrastructure, healthcare, and essential energy. The company strives to improve the power network that customers rely on. The company focuses on providing affordable, reliable, and sustainable energy while improving safety and quality of life. It operates through three business segments: Electrification, Wind, and Power. It offers a merging unit under its electrification segment. It operates in over 100 countries and has a geographical presence around Africa, the Americas, Asia, Australia, Europe, and the Middle East. It is known for delivering advanced solutions for the generation, distribution, and management of energy, backed by global reach and expertise across multiple infrastructure domains.

Schweitzer Engineering Laboratories, Inc. (US):

Schweitzer Engineering Laboratories, Inc. designs, develops, and manufactures digital products and systems that protect, automate, monitor, and control electrical power infrastructure worldwide. The company’s solutions help prevent blackouts and improve grid reliability, safety, and efficiency. It is fully employee-owned and is headquartered in Pullman, Washington, the US, with manufacturing facilities and offices globally. The company’s mission is to make electric power safer, more reliable, and more economical. It has grown into a full systems provider offering protection devices, control systems, metering, automation, and secure communications. It also supports its customers with engineering services, training (via Schweitzer Engineering Laboratories, Inc. University), and lifetime technical support, reinforcing its commitment to quality and long-term partnership. Additionally, it provides the SEL-TMU TiDL Merging Unit. The SEL-TMU is a remote data acquisition device designed for use in an SEL Time-Domain Link (TiDL) technology system. Placed in the substation yard, the SEL-TMU digitizes analog signals from primary equipment and then transmits them via fiber-optic cable to SEL TiDL relays in the control house. Its devices are manufactured in five US manufacturing centers, and our products are integrated into panels in regional assembly factories. The company has field offices in North America, South America, Europe, Asia Pacific, Africa, and Australia.

Market Ranking

The merging unit market is slightly competitive. Major market players are GE Vernova (US), Hitachi Energy (Switzerland), Arteche (Spain), Schweitzer Engineering Laboratories, Inc. (US), and Ingeteam (Spain). GE Vernova provides standalone and integrated merging unit products operating at medium voltages. Hitachi Energy provides SAM600 v 3.0 products that can be configured as a merging unit, a switchgear control unit, or both, making it flexible for greenfield or retrofit installations. Arteche’s merging unit processes the optical signal coming from the passive optical current transformer. The output of the SDO MU is the IEC61850 Sampled Values as per the latest IEC61869-9 (Digital Interface for Instrument Transformers) standard. Schweitzer Engineering Laboratories caters to the market with the SEL-TMU TiDL merging unit, which is placed in a substation yard. Ingeteam’s solutions serve a range of sectors, including renewable energy, energy storage, smart grids, green hydrogen, EV charging, and industrial applications such as marine, rail, mining, and water systems.

Related Reports:

Merging Unit Market By Type (Standalone, Integrated), Voltage (Low, Medium, High), Configuration (With Relay, Without Relay), End User (Utilities, Industrial, Commercial, Data Centers, Renewable Energy, Transportation, Others), Region - Forecast to 2030

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