
PRELIMINARY DESIGN

Do you have a portfolio of projects that require Technical Support? Flux delivers high-quality preliminary designs for utility-scale Battery Energy Storage Systems on time, on budget, and built to evolve with your project.
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As a provider of engineering services that support BESS projects from early concept through construction, we know that project success is often determined by the quality of early-stage designs. Based on this experience, we have incorporated best practices from Gigawatts of operating BESS projects into our preliminary design methodology.
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Prior to starting any engineering, we guide you through the completion of a customized intake form, host a scoping call, and share a documentation transfer protocol to help keep your portfolio organized. Then, we’ll establish templates for each deliverable that cater to your specific requirements - be it submittals to landowners, permitting authorities, or utilities. Every drawing and report undergoes our rigorous QA/QC process, allowing the templates to improve organically over time.
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As your contracted design team, we will combine our experience with the project’s needs to create a 10% package that typically includes the following:
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Drawings
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Site Plan: Layout includes major equipment, MV cable routes, access roads, fences, and property lines.
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Single Line Diagram: Shows electrical connections between BESS, PCS, transformers, and substation.
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Cable Schedules: Estimated lengths, sizes, configurations, and specifications for all key cables.
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Studies
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Cable Ampacity Report: Sizing assumptions for MV, AC, and DC cables, including impedance values.
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Custom Deliverables
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Need substation design or anything else? We’ll quote it.
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Along with a comprehensive design package, we also go a step further by offering hands-on technical solutions tailored to your project’s needs. We assign a dedicated primary point of contact to manage your questions and coordinate responses from our engineering team. Our experts provide technical solutions, share best practices, and deliver insights designed to maximize the value of your portfolio.
By combining systematic templates, rigorous QA/QC, and hands-on technical support, Flux ensures your portfolio of projects is executed efficiently and accurately from start to finish.


