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System Integration Services

Doosan GridTech™ system integration services employ a flexible approach that complements the utility’s core competencies with specialized support from an experienced Owner’s Engineer.

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Procurement

Our utility customers have told us their goal is to make procuring energy storage and other distributed energy resources (DER) as straightforward as procuring transformers. Open standards-based interfaces like those created by the MESA Alliance enable a more granular approach to acquiring such assets that minimizes costs while ensuring that the resulting system is well integrated with utility operations and delivers on its goals.

Successful deployments call for a procurement strategy that incentivizes a well-integrated system, while providing competitive pressure to drive down the cost of system components. As the industry matures, the utility’s procurement process can more closely resemble procurement of any other major asset.

Because ESSs and other DER comprise diverse and in some cases evolving technology types (batteries, PCS, BOS equipment, control system software, etc.), early projects employed procurement strategies that introduced higher project risk and excessive costs compared to more traditional utility practices. In some cases, the utility acted as sole system integrator (SI), taking on all aspects of design, procurement, and installation of often unfamiliar technologies. In others, the utility contracted with a single, turn-key SI to deliver a complete ESS, often designed in isolation from utility operations and the grid environment. Both these models deviate significantly from how the majority of utility equipment is designed and installed today, and neither accurately reflect the grid-integrated nature of a well-deployed ESS.

Based on our experience deploying multiple DER projects for utilities with diverse project goals, we have developed two alternative structures for procurement and other project tasks, depending on customer preference. A utility may choose the Owner’s Engineer structure, which keeps the utility in the driver’s seat but supplements them with our experience and expertise to maximize learning and reduce project risk. Alternately, the Doosan GridTech Turnkey structure provides full service on all project tasks, supported by close customer consultation at key decision points throughout the project.

design study→procure major components→detailed engineering design(factory integration test, site preparation)→installation→commissioning and Testing

Major project tasks for a new ESS, microgrid, or other DER deployment.
Tasks shown in green are those that the utility customer can optionally lead under the Owner’s Engineer structure.

Here’s how procurement works in the Owner’s Engineer based structure: 

Acting as Owner’s Engineer/SI, Doosan GridTech designs the ESS in stages with heavy utility involvement, leveraging both Doosan’s know-how on ESS design/deployment and the utility’s traditional grid design and operational expertise. This essential first step ensures that project goals are effectively addressed within each utility’s unique grid environment. With Doosan support, the utility procures the highest capital cost ESS components, leveraging the utility’s substantial buying power, economies of scale, and procurement infrastructure.
The utility contracts with familiar local contractors for site preparation and installation, which Doosan GridTech oversees at the site with utility involvement.

Installation/Commissioning

Doosan GridTech provides Installation and Commissioning services in close coordination with our utility customers, employing a proven process that complements the utility’s core competencies with specialized engineering and process support from an experienced energy storage Owner’s Engineer.

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Our Installation and Commissioning services include any or all of the following, as requested by our utility customer:


  • ESS Engineering. Doosan GridTech drives the design process, including multiple review milestones from the utility customer. Deliverables include a complete set of “For Construction” drawings and precise equipment specifications.
  • Project and Site Management. Typically, the utility engages a familiar local contractor to perform site civil work and BOS installation in accordance with the “For Construction” drawings provided by Doosan GridTech. We provide site management, including clarifications and engineering support for site preparation as needed. (While we can engage the sub-contractor if desired, cost savings can often be achieved by using established utility civil sub-contractors, managed on-site by Doosan GridTech.)
  • Factory Acceptance Testing. We provide thorough factory acceptance testing to ensure all components work together properly before shipping and manage the test process, which is available to be witnessed by the utility prior to shipment to the site.
  • Installation Oversight and Training. Doosan GridTech provides oversight and assistance as needed to utility sub-contractors who conduct onsite installation of batteries and PCSs. During installation, we provide training to utility personnel involved in installation and commissioning.
  • Commissioning and Final Acceptance Testing. Doosan GridTech commissions the ESS and conducts rigorous acceptance testing in the presence of utility personnel. This process includes the configuration of setpoints and operating modes to achieve optimal performance on the grid. A full Final Acceptance Report is provided, including a listing of all equipment serial numbers and software version numbers for configuration management.
  • Training and Operating Manuals. Training typically begins during installation and continues until Final Acceptance. We train applicable utility personnel on first response, emergency procedures, operations (local and remote), and maintenance of the ESS. Operating manuals are provided for our control software and for the entire ESS (not just individual components).
  • Field Performance Testing. Designed to evaluate and report on the long-term performance of the ESS in various modes of operation, field performance testing may occur for weeks or months after commissioning.

    If you work for an electric utility and would like to discuss the Final Acceptance Report process and view an example report, please email us.

“You can’t just hook energy storage to the grid and turn it on. It must be designed, built, and controlled as an integral part of the grid to reach its full value.”
– Dan Sowder, VP of Power Systems Integration

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