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Salary: USD 160,000 - 210,000 / annual
Redwood Materials, founded by JB Straubel (Tesla co-founder and former CTO), is North America's largest lithium-ion battery recycler and has deployed the world's largest second-life battery project. The company is profitable and operates in a market projected to grow 20–50x over the next decade.
The Senior Power Systems Engineer, Energy Storage role develops and validates power system models, controls, and interconnection solutions for Redwood's energy storage systems, supporting both grid-connected and off-grid projects.
Key Responsibilities:
- Translate power system requirements into site controller and inverter controller specifications, influencing system and plant-level control architecture in collaboration with product and controls design teams.
- Design, develop, and validate plant controller functions for battery energy storage systems, including voltage regulation, frequency regulation, P–f and Q–V droop control, active/reactive power control loops, and fast frequency response.
- Ensure control algorithms meet utility, ISO, and IEEE requirements, including ERCOT interconnection specifications and IEEE 2800 compliance.
- Build and strengthen in-house modeling capabilities for Redwood Energy's products in PSCAD and PSSE, including model validation against field and controller-hardware-in-the-loop behaviors.
- Set up and execute CHIL (controller-hardware-in-the-loop) testing on platforms such as RTDS, OPAL-RT, or Typhoon HIL to validate inverter and site controller performance under grid disturbance and fault scenarios.
- Develop automation tools for PSCAD and PSSE for interconnection studies using Python, C, or C++.
Requirements:
- 3+ years of experience in power system studies, dynamic modeling, inverter-based resources, or grid integration of energy storage and renewable energy systems.
- MS or PhD in Electrical Engineering with specialization in power systems and control systems (PhD preferred).
- Strong foundation in classical and modern control theory including PID tuning, state-space modeling, small-signal stability analysis, and frequency-domain analysis (Bode plots).
- Expert proficiency in MATLAB/Simulink for control algorithm development and testing.
- Experience developing and validating user-defined inverter or plant controller models in PSCAD and/or PSSE.
- Hands-on experience with inverter-based resource modeling including grid-forming and grid-following control, PLL design, virtual inertia, and droop-based power control.
- Solid understanding of synchronous machine dynamics, excitation and governor systems, and system-level stability concepts (frequency stability, voltage stability, weak grid operation).
- Experience with real-time simulation and CHIL environments (RTDS, OPAL-RT, Typhoon HIL) strongly preferred.
- Programming experience in Python, C, or C++ for model automation, controls integration, or testing workflows.
- Experience performing or supporting transmission-level engineering studies such as transient stability, protection coordination, harmonics, and insulation coordination is a plus.
- Familiarity working with utilities, ISOs, or renewable project developers is a plus.
