Site Project Manager, Energy Storage

ON.energy; Houston (TX); Hybrid; USD 120,000 - 180,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) with company match

Paid time off and holidays

Professional development opportunities

Job summary

ON.energy is seeking a Site Project Manager for Data Center Projects to lead the full lifecycle execution of Battery Energy Storage System (BESS) and hybrid energy projects at client sites across the U.S. You will mobilize, plan, and manage construction, commissioning, and closeout with a strong focus on safety, quality, and budget.

Reporting to the Project Executive, you will coordinate with commissioning, safety, and vendor teams, manage change orders, and drive timely turnover to operations

Qualifications

• Bachelor's Degree in Engineering or related technical field.
• Minimum 5 years of progressive energy project management experience.
• Proven experience managing EPC contractors and complex infrastructure at project sites.
• Proficient in MS Project or Primavera for scheduling.
• Excellent communication and client-facing skills.

Responsibilities

• Lead full lifecycle execution of battery energy storage and hybrid projects on site.
• Coordinate safety, schedule, budget, quality, commissioning, and closeout.
• Develop and manage project schedules using MS Project or Primavera.
• Oversee on-site GC and subcontractor activities to ensure scope and safety.
• Facilitate regular coordination meetings with clients and teams.
• Ensure change orders, RFIs, NCRs, PCNs, VCNs are tracked.

Skills

Project management

Communication

Client-facing

Bilingual English/Spanish

Education

Bachelor's Degree in Engineering

Tools

MS Project

Primavera

Job description

ON.energy is building the power infrastructure that makes the AI era possible. As AI demand surges past what the grid and traditional data centers can support, ON.energy provides a new class of power technology proven at gigawatt scale and trusted by the world’s leading cloud and AI companies. Our systems are already deployed across 2.5 GW of hyper‑scale campuses, validated by top U.S. national labs, and certified for grid‑safe operation by major utilities. With real products in the field, we’re scaling faster than the grid can, transforming power from a bottleneck into a competitive advantage for the companies building the future.

Site Project Manager, Energy Storage

Location

This is a remote/site‑based role with the ability to travel and be located at project sites across the U.S (many projects in Texas).

Position Overview

The Site Project Manager for our Data Center Projects is responsible for leading the full lifecycle execution of Battery Energy Storage System (BESS) and hybrid energy projects at the site level for data centers. This role is integral to the successful delivery of complex energy infrastructure, beginning with site mobilization and construction planning through execution, commissioning support, and project closeout. Reporting directly to the Project Executive, this role oversees all on‑site activities, managing teams and subcontractors to ensure projects are completed safely, on time, within budget, and in compliance with quality standards and contractual obligations. The Site Project Manager works closely with the Commissioning Manager to coordinate system turnover activities, including managing documentation, overseeing on‑site vendor activities, facilitating punch list resolution, and aligning the general contractor’s efforts with the needs of the commissioning team.

Key Responsibilities

• Serve as the jobsite primary point of contact with the client, maintaining alignment across all project stages.
• Support the Project Executive in delivering the full scope of project execution, including safety, schedule, budget, engineering, quality, commissioning, and compliance.
• Develop, maintain, and monitor project schedules using recognized tools and methodologies.
• Support with execution to align with project budgets from planning to final close‑out, including monthly forecasting and variance tracking.
• Identify, assess, and mitigate jobsite level project risks related to cost, safety, quality, and delivery.
• Oversee daily on‑site operations by monitoring General Contractor and subcontractor activities to ensure alignment with project scope, safety requirements, and quality expectations.
• Oversee vendor on‑site activities to ensure adherence to site safety rules, quality standards, and equipment commissioning timelines.
• Lead and facilitate regular coordination meetings with the General Contractor, subcontractors, and client teams to track progress, resolve issues, and align on upcoming work.
• Conduct routine site walks to observe construction activities, validate compliance with design documents, and identify potential risks or deviations early.
• Manage field quality activities including coordinating equipment receipt inspections, managing installation inspections, and ensuring documentation for quality reporting is maintained.
• Support the Project Executive in managing all change orders, RFIs, NCRs, PCNs, and VCNs in a timely and traceable manner.
• Ensure daily JSA/JHAs are in place, morning toolbox meetings occur, safety and commissioning teams are aligned prior to the start of daily activities, end‑of‑day meetings to ensure alignment on next day’s activities and goals.
• Foster strong relationships with clients, suppliers and partners to improve execution quality and delivery performance.
• Support Project Executive in validating subcontractor invoices and payment applications by cross‑referencing with field progress and contractual terms.
• Collaborate closely with safety personnel and commissioning teams to ensure daily readiness, compliance with site safety protocols, and startup of new systems.
• Coordinate closely with the Commissioning Site Manager to align construction activities with system readiness, turnover packages, and commissioning schedules.
• Support contract close‑out and final project documentation handover.

Qualifications

• Bachelor’s Degree in Engineering or related technical field (required).
• Minimum of 5 years of progressive experience in energy project management, preferably in battery energy storage or related fields.
• Demonstrated experience managing EPC contractors and overseeing complex infrastructure projects at project sites.
• Proficient in project scheduling tools (e.g., MS Project, Primavera) and budget tracking systems.
• Deep understanding of project controls, cost forecasting, and risk management best practices.
• Proven ability to manage multiple complex projects simultaneously.
• Excellent communication and client‑facing skills.
• Bilingual English/Spanish preferred (not required).

For US-based roles – What you’ll get

• Competitive salary + annual performance‑based bonus eligibility
• Medical, dental, and vision insurance
• 401(k) with company match
• Paid time off and company holidays

For Mexico-based roles – What you’ll get

• Competitive salary + annual performance bonus eligibility
• Christmas Bonus (Aguinaldo): 30 days
• Major medical expenses and life insurance
• Paid time off and holidays (per local policy)

For all roles

• Professional development and growth opportunities
• Opportunity to grow with a mission‑driven team shaping the future of clean energy
• Equal Opportunity: ON.energy is committed to equal employment opportunity and to maintaining a work environment free of harassment, discrimination, or retaliation.
• Accommodations: If you need an accommodation during the application process, email [e-mail]
• Benefits vary by role and location and are subject to change.