Performance Engineer (Windermere)

Performance Engineer: Solar & BESS

Role Overview

CIG Energy, a sister company of US Modules is seeking a Performance Engineer: Solar & BESS to directly support the execution of its multi-gigawatt utility-scale solar and battery energy storage portfolio. This role is a core operational support function for the SVP of Operations, responsible for ensuring that energy models, system designs, EPC assumptions, and financial outputs are technically aligned, bankable, and executable in the field.

This position sits at the intersection of development, EPC execution, and capital markets, and carries real responsibility for protecting project performance, revenue assumptions, and long-term asset value. The Performance Engineer will serve as CIG Energy’s technical authority on energy production, degradation, and system optimization from greenfield development through operations.

Primary Responsibilities

• Act as the technical performance lead supporting Operations, responsible for protecting energy yield, availability, and long-term performance assumptions across CIG’s solar and BESS projects.
• Provide technical due diligence throughout the project lifecycle, from early-stage development through construction and operations.
• Own weather resource assessment, energy production modeling, and loss analysis for utility-scale solar PV and BESS projects.
• Serve as CIG Energy’s primary subject matter expert for solar production methodology and energy modeling best practices.
• Lead system configuration, assumptions, and alignment for PVsyst, ensuring layouts, losses, degradation, and operating assumptions are technically sound and execution-ready.
• Review EPC technical exhibits, performance guarantees, and design assumptions to ensure consistency with approved energy models and contractual obligations.

Work directly with the SVP of Operations to:

• Identify performance risks early
• Validate EPC and supplier assumptions
• Support decision-making on layouts, equipment selection, and execution tradeoffs

Execution, Design & Optimization

• Support Project Execution teams in the development and coordination of optimized layouts, incorporating constructability, access, topography, interconnection, and construction sequencing constraints.
• Perform layout optimization, shading analysis, energy yield simulations, and detailed loss assessments.
• Conduct site assessments, review topographical and geotechnical data, and analyze meteorological datasets.

Design and optimize BESS system layouts, including:

• Degradation modeling
• Augmentation strategies
• Long-term capacity and performance planning
• Collaborate closely with EPC partners, project managers, and internal stakeholders to ensure design quality, constructability, and execution alignment.

Financial & Commercial Alignment

• Partner with Capital Markets and Financial Modeling teams to ensure energy model inputs, production profiles, and degradation assumptions are fully aligned with financial models and investment materials.
• Support lender, tax equity, and investor technical diligence by providing clear, defensible performance assumptions and documentation.
• Assist in resolving technical questions related to performance guarantees, availability, and long-term asset value.

Standards, Compliance & Continuous Improvement

• Maintain current knowledge of applicable codes and standards, including NEC, UL, IEEE, IEC, and relevant industry guidance.
• Support performance monitoring, analytics, and reliability tracking across operating assets.
• Identify opportunities to improve modeling accuracy, design standards, and execution outcomes across the platform.
• Perform additional responsibilities as required to support operational execution and business needs.

Minimum Qualifications

Minimum three (3) years of experience as a Performance Engineer or in a closely related technical role within the renewable energy industry.

Demonstrated hands-on experience with:

• PVsyst
• Solar and BESS energy modeling software
• Utility-scale project development and execution
• Solar PV system design and performance modeling
• Degradation analysis and long-term reliability tracking
• Data analytics and performance monitoring
• Advanced Excel modeling
• Strong understanding of renewable energy suppliers, EPC execution, markets, and technology trends.
• Ability to operate independently, manage multiple priorities, and deliver high-quality technical work in a fast-paced execution environment.

Why CIG Energy

Powering America, Preserving Freedom

We are building a vertically integrated, U.S.-anchored renewable energy platform designed for speed, scale, and long-term ownership. Guided by our principles of Patriotism with Purpose, Integrity First, GRIT, Vertical Integration for Victory, Innovation Rooted in Service, and Excellence in Execution, every role contributes directly to delivering reliable, American-made energy infrastructure.

This role offers hands-on impact across multi-gigawatt Solar and BESS projects, exposure to institutional-grade execution, and the opportunity to grow alongside a platform scaling toward a 5+ GW national portfolio.