Interconnection Strategy Lead

About Mainspring

Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.

The core values that ground our work, guide our decisions, and connect us together:

- Pragmatic Optimism

- Excellence without Ego

- Proactive Collaboration

Position Overview

Mainspring needs a role focused on building the Company’s utility and interconnection strategy capability for larger, more complex projects and customers.

This position of Interconnection Strategy Lead is intended to bridge project execution, utility strategy, transmission-scale readiness, internal workflow design, and requirements intelligence to support Mainspring scaling beyond one-off projects and manual coordination.

The role will support larger customer segments such as data centers, utilities, and enterprise accounts, while helping the organization prepare for utility-scale, transmission-adjacent, and geographically diverse deployments. It also includes strategic review and planning for interconnection across North America.

The purpose of this role is to translate utility, market, interconnection, and regulatory complexity into repeatable business processes, customer-ready guidance, and scalable internal systems.

This position focuses on developing a more programmatic capability that supports larger sites, more sophisticated customers, and increasing process complexity.

Responsibilities

- Utility and Interconnection Strategy

- Lead utility and interconnection strategy for complex customer opportunities, including large-load, utility-scale, and enterprise projects.

- Evaluate site-specific interconnection pathways, utility requirements, and market-participation implications, including differences between market participant and non-market participant pathways where relevant.

- Identify material cost, schedule, and technical risks early, including study triggers, protection requirements, relay requirements, and other constraints that can affect project viability.

- Develop or coordinate alternative operating, engineering, and interconnection approaches where standard utility requirements create unacceptable delay or cost exposure.

- Large-Site and Transmission Readiness

- Support Mainspring’s transition from smaller distributed projects toward larger 10 MW-plus opportunities and other projects that may cross ISO, transmission, or additional utility thresholds.

- Help define the technical and process capabilities required to succeed in larger projects, including OEM model availability, transmission-grid interaction understanding, and cross-functional readiness.

- Coordinate with internal and external technical stakeholders to address issues related to power systems behavior, controls, grid interaction, and compliance expectations.

- Contribute to readiness planning for markets and customers that require stronger utility-strategy sophistication, including enterprise accounts and island or nonstandard regions.

- Regulatory and Compliance Readiness

- Support internal understanding of utility, transmission, and relevant NERC considerations that may affect large-scale projects and customer diligence.

- Help surface what information customers and internal teams will increasingly expect as project size and complexity grow.

- Coordinate with internal compliance, controls, security, and technical stakeholders where interconnection, cyber, controls, or compliance considerations overlap.

- Process, Workflow, and Systems Design

- Design and improve repeatable workflows fo