Natural Power

Senior BESS Engineer

Join Natural Power as a Senior BESS Engineer in Seattle, Golden, or Saratoga Springs. Lead technical reviews of battery energy storage projects, support advisory teams, and conduct site visits. Enjoy a competitive salary, excellent benefits, and a collaborative environment driving renewable energy innovation.
Natural Power
Natural Power
Flexible Full time USD 110k–170k yearly UTC-06:00 – UTC-05:00

Natural Power

Company Overview

Natural Power

Castle Douglas, Scotland, United Kingdom

1995

Approximately 500 employees globally (source: rocketreach.co). Revenue figures vary, with estimates around $386.7 million, though no public confirmation exists for 2023+ (source: rocketreach.co).

What They Do

Natural Power specializes in consultancy and services across a wide range of renewable energy sectors, including onshore wind, offshore wind, solar PV, energy storage, renewable heat, hydro, wave, and tidal energy. They provide comprehensive lifecycle support, from feasibility studies and planning to construction, operations, asset management, and due diligence (source: naturalpower.com). Their core offerings encompass expert planning, environmental assessments, project management, and innovative products such as the ControlCentre, which currently manages 11.5GW of renewable energy assets, including a significant portion of the UK's onshore wind and battery storage (source: naturalpower.com). With a presence in over 50 countries, Natural Power targets developers, investors, lenders, and operators, particularly in Europe and North America, while also exploring emerging markets in Africa (source: naturalpower.com). Their independent status allows them to provide unbiased advice on complex projects, leveraging over 30 years of experience and in-house innovations like AI-accelerated wind turbine inspections (source: naturalpower.com).

Projects & Track Record

Natural Power has an impressive track record, having supported projects totaling nearly 215,000 MW of installed capacity across more than 50 countries. They played a pivotal role in early UK milestones, including consenting the first 50MW Section 36 onshore wind project and Scotland's first onshore wind farm in 1996 (source: naturalpower.com). Recent notable projects include the BNRG solar projects in Ireland, contributing to the country's 2GW solar milestone, and a 20MW standalone battery energy storage system (BESS) in California's Mojave Desert, which was commissioned in under a year (source: naturalpower.com). Ongoing projects include the construction management of Scotland's 33.4MW Mill Rig Wind Farm, which will power approximately 45,000 homes, and technical due diligence for a 4GW UK transmission-connected BESS portfolio (source: naturalpower.com). Their client base includes significant players like TagEnergy and Ardian, showcasing their strong partnerships in the renewable sector (source: naturalpower.com).

Recent Developments

In December 2025, Natural Power expanded its footprint in Germany's renewable market by acquiring Munich-based renerco plan consult (source: naturalpower.com). The company has been actively involved in due diligence for TagEnergy's acquisition of four 300MW Scottish wind projects in November 2025, further solidifying its role in the renewable energy landscape (source: naturalpower.com). Additionally, they advised on financing for Green Genius's 182MWp Lithuanian solar projects, demonstrating their expertise in international renewable financing (source: naturalpower.com). The launch of the expanded ControlCentre in May 2025, which is now the UK's largest independent renewable control room managing 11.5GW, marks a significant milestone for the company (source: naturalpower.com). Overall, Natural Power's turnover rose by 16% year-over-year, driven by growth in UK onshore wind and battery storage projects (source: cbinsights.com).

Working There

Natural Power offers a diverse range of roles across various departments, including planning, environmental services, project management, and engineering for solar PV, energy storage, and wind projects. Their teams are involved in significant projects, such as managing 4GW BESS portfolios and operating control rooms (source: naturalpower.com). The company is actively hiring across its offices, particularly in the newly expanded Glasgow hub, which opened in January 2025, and its Castle Douglas headquarters (source: naturalpower.com). Natural Power fosters a collaborative culture focused on innovative problem-solving and ambitious teamwork, aiming to lead in the renewable energy sector (source: naturalpower.com). While specific benefits are not detailed, the company emphasizes investments in staff development and a supportive work environment, as evidenced by their eco-office and advanced control room facilities (source: naturalpower.com). Current job opportunities can be found on their careers page (source: naturalpower.com).


Last updated on Feb 23, 2026 | Report an issue

Job Description

The Senior BESS Engineer serves as a key resource within the Construction team, assisting in the review of Battery Energy Storage System (BESS) projects and providing technical due diligence to support the advisory team. The role will contribute to the technical review of BESS projects and co-located renewable energy portfolios for investors, financing parties, developers, and project owners across all stages of the asset lifecycle.

Roles and Responsibilities

  • Lead and contribute to the technical review of BESS projects and portfolios for investors, financing parties, developers, and project owners
  • Lead and contribute to writing and reviewing due diligence and independent engineering reports focused on energy storage technology and systems
  • Review BESS project designs, system configurations, and integration studies for code compliance, industry standards, and project requirements
  • Evaluate BESS system specifications including battery chemistry, power conversion systems (PCS), thermal management, and battery management systems (BMS)
  • Assess performance models, cycle life analyses, degradation assumptions, and state-of-health projections for energy storage assets
  • Develop skills in storage technology reviews as a core area of expertise, including standalone and co-located (solar + storage) configurations, grid services capabilities, and revenue stacking strategies, operating agreements, electrical engineering, and financial model reviews
  • Conduct site visits for BESS and co-located renewable energy projects across development, construction, and operational phases
  • Responsible for the on-time, on-quality, and on-budget delivery of tasks assigned to you
  • Provide clear technical advice and communicate complex BESS engineering and risk topics to clients, investors, and lenders
  • Demonstrate good communication skills, both oral and written, vertically and across the organization
  • Maintain and improve internal project databases, technology trackers, and knowledge management resources
  • This position may require up to 20% travel.

Minimum Qualifications

  • Bachelor's degree from accredited university or college in Engineering or related technical discipline
  • 5+ years of experience in solar project design, engineering, or development, with at least 2 years in a role involving technical review, independent assessment, or consulting advisory work. Candidates with 3 - 4 years of highly relevant experience may be considered at the Engineer level
  • Working knowledge of BESS technology
  • Familiarity with relevant codes and standards including as applied to energy storage

Desirable Qualifications and Experience

  • Advanced degree and EIT certification preferred.
  • Experience in independent engineering, technical due diligence, or consulting roles for BESS projects
  • Familiarity with solar technology and co-located solar + storage configurations
  • Experience in more than one renewable energy source
  • Experience with travel and project site visits

General Responsibilities

Health & Safety: All employees are required to adhere to Health & Safety Regulations and ensure best practice is upheld by all Natural Power employees.

Environmental: All employees are required to adhere to all applicable Environmental Regulations to protect the environment when working with clients, colleagues and contractors.

Quality: All employees are expected to work within the systems, processes and procedures outlined within the department and / or company handbooks, software platforms, and training manuals.

Flexibility: A reasonable degree of flexibility is required from all employees to meet the needs of the role, the department, and the wider company.

Compensation for this role typically ranges from $110,000 to $170,000 annually, with flexibility based on your experience, skills, and unique contributions. We know the perfect candidate doesn't always look the same on paper. If you're passionate about driving the clean energy transition and believe you have something to offer, we'd love to hear from you, even if you don't meet all of the criteria listed above.

We will offer an engaging, collaborative and fast-paced environment and an excellent benefits package, including Competitive 401k plan, Medical, Dental, Vision, Life, LTD and STD Insurance, HRA, FSA, Paid Parental Leave, 11 holidays (6 public and 5 floating) and Paid Time Off.

Our work and culture

We have been pioneers of positive renewable change at Natural Power for 25 years. If you're looking for a job in the renewable energy industry, we could be just the place to advance your career.

Our values are at the very heart of what we do every day. By working with us, you'll be joining a diverse international community of experts who are innovative, inclusive and supportive of your own personal development. We also provide the highest quality of expertise, innovation and client commitment globally.

Diversity & Inclusion

Natural Power is an equal opportunities employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status or disability status.

You can find the full role profile for this vacancy attached below. Details of all of our currently available opportunities can be found on our website www.naturalpower.com/careers After the closing date, this role profile won't be available on our website, so please save a copy when you apply.

Apply now

Job expired?

Please let Natural Power know you found this job on Rejobs. It helps us grow and get more people working in renewable energy.

About the role

July 14, 2026

July 14, 2026

Full time

Flexible

Company

USD 110k–170k yearly

Solar Energy, Energy Storage

Natural Power

naturalpower.com

  •  Seattle, Washington, United States
  •  Golden, United States
  •  Saratoga Springs, New York, United States

5+ years in relevant field

UTC-06:00 – UTC-05:00