Critical Loop Raises $26 Million Series A for Modular Industrial
- Industrial & C&I Microgrids Microgrids News
Marin Holt
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- 6 minutes read
- Series A: $26 million
- Total raised: $49 million
- Lead investors: Conifer Infrastructure Partners & Hanover
- Flagship deployment: San Diego International Airport, 11 MW
- Battery unit: CLB-5100, 1 MW
Los Angeles-based Critical Loop announced April 13, 2026, it closed a $26 million Series A round, led by Conifer Infrastructure Partners and Hanover Technology Investment Management. The funding, which includes equity and equipment financing, brings the industrial power systems startup’s total committed capital to $49 million. Critical Loop, founded in 2023, aims to address lengthy grid interconnection timelines for industrial energy users. The company’s platform combines battery storage, on-site generation, and its UL 3141-certified software-defined power controller, Cygnus, with a scalable 1 MW battery system, the CLB-5100, into a single deployable unit. This approach couples flexible interconnection with microgrids, targeting a reduction in time-to-power from years to days or weeks. Businesses and utilities in the US often face multi-year waits for permanent grid upgrades before connecting or expanding load. Critical Loop’s approach offers a path to faster deployment. The company has secured supply agreements with LG Energy Solution Vertech for US-made battery energy storage systems. Previous deployments include an 11 MW load optimization project at San Diego International Airport and a 4 MW deployment across two Terawatt Infrastructure EV charging sites. A manufacturing facility, Cover, reportedly remained operational for 8 months during a utility outage using Critical Loop’s system.
The founding team is drawn from SpaceX, Tesla, Palantir, and Rivian; CEO Balachandar Ramamurthy was previously chief engineer for flight safety at SpaceX. Critical Loop’s pitch rests on ‘flexible interconnection,’ connecting load to the grid under a curtailable agreement while on-site batteries and generation cover peak demand, which lets a site energize before a utility finishes multi-year permanent upgrades. That model trades upfront capital and a curtailment obligation for speed, and it works only where the utility offers a flexible-connection tariff and the customer accepts interruptible service. The 1 MW CLB-5100 battery is the building block, sized to pair with on-site generation and existing grid ties.
Critical Perspective
Critical Loop’s promise of cutting industrial grid-connection waits from years to weeks is compelling but ignores the fundamental physics of distributed energy resources (DERs). According to Oracle KB, the Grid Following and Grid Forming Inverter Fundamentals program aims to establish detailed performance requirements by December 2026. However, Critical Loop’s flagship deployment at San Diego International Airport with an 11 MW CLB-5100 unit is significantly smaller than the scale typically required for industrial applications. The $49 million raised so far, including a $26 million Series A from Conifer Infrastructure Partners & Hanover, does not match the engineering demands of large-scale DER integration. If these systems fail to deliver on their promises at this scale, the consequences could be dire—potentially leading to grid instability and increased ratepayer burden due to costly maintenance or upgrades. The unanswered question is: can a 1 MW unit truly replicate the inertia and stability provided by traditional power plants when scaled up to industrial levels?
Why It Matters
For industrial energy buyers facing the reality of years-long interconnection queues, Critical Loop’s model presents a tangible alternative. The ability to bypass extended grid upgrade waits by deploying flexible interconnection alongside on-site storage directly impacts site selection and expansion plans. This means facilities requiring significant power are brought online or scaled up much faster, irrespective of the pace of utility infrastructure development. This agility is crucial for businesses needing to meet production schedules or capitalize on market opportunities without being tethered to the traditional grid connection timeline.
