Liberty Mutual Investments-Led Group Makes Preferred Investment in Mission Critical Group
September 18, 2026
Mission Critical Group, a portfolio company of Emerald Lake Capital Management, closed a preferred investment led by Liberty Mutual Investments, with Invesco Senior Secured Management, Aventail Capital Group, and Brigade Capital Management also participating. The investment supports MCG’s growth as a provider of electrical infrastructure solutions amid rising demand from data centers and other mission-critical facilities.
- Buyers
- Liberty Mutual Investments, Invesco Senior Secured Management, Aventail Capital Group, Brigade Capital Management
- Targets
- Mission Critical Group
- Industry
- Manufacturing
- Location
- Texas, United States
- Transaction Type
- Growth capital
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Mission Critical Group to Merge with CORE Transformers
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Mission Critical Group (MCG) entered into an agreement to merge with CORE Transformers (CORE), a supplier of engineered-to-order transformers for data center, grid, and industrial applications. The combined company is expected to close within the next 30 days, subject to customary closing conditions.
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Mission Critical Group Acquires TxLa Systems
April 8, 2026
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Mission Critical Group (MCG) announced the acquisition of TxLa Systems, a Texas-based manufacturer of electrical switchgear and modular systems. The deal builds on an existing partnership (established in 2023) to expand MCG’s manufacturing capacity and bring additional supply-chain capabilities in-house.
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Liberty Mutual Investments Makes Strategic Minority Investment in Mascarene Partners
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Liberty Mutual Investments (LMI) has made a strategic minority (growth capital) investment in Mascarene Partners to provide long-term capital to support the firm’s middle-market transportation and industrial investment platform. Mascarene’s investment process and strategy will remain unchanged; LMI previously acted as a lead anchor investor in Mascarene’s portfolio company Voyager Trucking and holds board representation.
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Mission Critical Group Acquires Leman Engineering and Consulting
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Mission Critical Group (MCG) has acquired Leman Engineering and Consulting (LEC), a Brookston, Indiana–based manufacturer of switchgear, control systems, and power distribution equipment. The acquisition strengthens MCG’s Midwest manufacturing footprint, expands its engineering capabilities, and establishes LEC as MCG’s R&D hub for power generation engineering and switchgear innovation.
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McCarthy Capital Makes Growth Equity Investment in Critical Response Group
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McCarthy Capital has made a growth equity investment in Critical Response Group (CRG) to accelerate the company’s product innovation and scale its indoor emergency response mapping platform. The investment will support CRG’s efforts to meet rising demand across education, government and healthcare markets and expand integrations with first-responder technologies.
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Mission Critical Group (backed by Emerald Lake Capital) Acquires Johnson Thermal Systems
August 10, 2023
Manufacturing
Mission Critical Group (MCG), a newly formed electrical equipment solutions platform backed by Emerald Lake Capital Management, has acquired Johnson Thermal Systems (JTS), a family-owned designer and manufacturer of custom power packaging and industrial cooling solutions based in Caldwell, Idaho. JTS will operate as part of the MCG platform to expand product and service capabilities supporting mission-critical power and cooling needs across data centers and other industrial end markets.
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