Battery Energy Storage
System Design

iEngineering Australia provides Battery Energy Storage System design services for small, commercial, industrial and utility-scale applications, supporting both standard and custom BESS solutions.

We support BESS sizing, technical design, integration with solar and wind systems, substation DC backup applications, performance studies and practical engineering support for reliable energy storage deployment.

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Focus
BESS Design & Sizing
Coverage
Grid, Solar, Wind & Substation Applications
Battery energy storage system design

Reliable BESS Engineering

Practical battery storage design support for performance, reliability, integration and long-term asset value.

What we provide

Comprehensive Battery Energy Storage System Design Support

Battery Energy Storage Systems are widely used to store electrical energy and improve power system performance. In addition to storage, they also support weaker electrical networks, voltage stability and critical backup power applications.

We support BESS design for substations, renewable integration, industrial systems and utility projects, helping clients with sizing, key design parameters, operating philosophy and technical engineering considerations.

  • Support BESS sizing and technical design
  • Assist with renewable and grid integration
  • Improve reliability of substations and critical loads
  • Address design factors like DoD, aging and temperature
  • Support long-term energy storage performance
BESS Design
Renewable Integration
Grid Support
BMS Logic

Our expertise

Our expertise in Battery Energy Storage System Design

We support battery storage design across technical sizing, operational duty, renewable integration, efficiency improvement, control logic and application-specific engineering requirements.

BESS Sizing & Capacity Design

We help determine suitable battery power and storage capacity based on project objectives, duty cycle, converter capacity, operational duration and system performance needs.

Coverage

MW and MWh sizing, duty cycle assessment, project-specific storage requirements and performance-based selection

Outputs

  • BESS sizing basis
  • Application-based storage recommendations
  • Capacity planning support

Substation Battery Backup Design

We support battery system design for substations where DC backup is needed to supply critical loads such as protection relays, circuit breakers and control systems when AC supply is lost.

Applications

Substations, protection systems, breaker operation, critical DC loads and backup power reliability

Outputs

  • Critical load backup design support
  • Battery backup philosophy
  • Substation reliability improvement

Depth of Discharge & Duty Cycle Assessment

Depth of discharge is a key input in battery design. We support evaluation of discharge limits, state of charge relationships and duty cycle impact on capacity and battery life.

Key Factors

DoD, SoC relationship, discharge allowance, operating profile and performance optimisation

Outputs

  • Discharge profile review
  • Battery utilisation support
  • Duty-based design inputs

Temperature Correction & Aging Factor Review

Battery performance changes with temperature and age. We consider temperature correction factors and aging margins to support reliable long-term design performance.

Scope

Temperature correction, installation conditions, design margin, battery aging and long-term capacity retention

Outputs

  • Temperature-adjusted design support
  • Aging margin allowance
  • Improved lifecycle planning

KT Factor & Section Capacity Calculations

We support battery sizing methodology using capacity rating factors and section capacity calculations based on changes in load and discharge period requirements.

Technical Basis

KT factor, load sections, ampere-hour capacity, discharge time and section-based sizing methodology

Outputs

  • Section capacity support
  • Load-based battery sizing inputs
  • Engineering calculation assistance

Renewable Energy Integration

We support BESS applications integrated with solar and wind systems to improve energy shifting, reliability, dispatch support and better use of renewable generation.

Applications

Solar integration, wind integration, hybrid systems, peak support and energy management

Outputs

  • Hybrid energy storage support
  • Renewable integration engineering
  • Power and energy balancing support

Efficiency, Ramp Rate & Performance Review

We consider round-trip efficiency, parasitic losses, response time, ramp rate, output energy density and operating duration to support better BESS performance.

Performance Factors

Round-trip efficiency, ramp rate, response time, operational lifetime, cycle duty and output performance

Outputs

  • Performance-based design review
  • Efficiency-focused engineering inputs
  • Operational suitability assessment

Battery Management System Support

We support design approaches that consider BMS logic, battery state estimation, characteristics monitoring and energy management across the operating lifecycle.

Focus

Battery state estimation, control logic, characteristic monitoring, lifecycle optimisation and reliable operation

Outputs

  • BMS-oriented design inputs
  • Operational control support
  • System behaviour understanding

Solutions we support

Battery Storage Applications We Support

Our BESS design support covers critical backup power, renewable integration, grid support and performance-focused energy storage applications.

Substations

Critical DC Backup Systems

Application: Protection, Control & Breaker Operation

  • Battery backup for protection relays and tripping circuits
  • Support for critical loads during AC supply loss
  • Improved reliability of substation operation
  • Support for control and emergency DC systems
Renewables

Solar & Wind Integration

Application: Hybrid Energy Systems

  • Store excess renewable generation
  • Improve dispatch flexibility and energy shifting
  • Support smoother renewable power delivery
  • Improve stability of hybrid generation systems
Grid Support

Voltage & Network Support

Application: Weak Networks & Power Quality

  • Support weaker power systems and long lines
  • Assist voltage support and response needs
  • Provide fast power injection when required
  • Improve network stability and continuity
Industry

Industrial Energy Storage

Application: Reliability & Peak Management

  • Support reliable plant and facility operations
  • Improve backup capability for key processes
  • Help manage load profile and energy use
  • Support improved operational resilience
Utility Scale

Large-Scale BESS Projects

Application: Utility & Infrastructure Projects

  • Support large battery installations for grid applications
  • Consider MW converter capacity and MWh storage requirement
  • Review response, duration and lifecycle requirements
  • Assist custom and standard BESS project design

Why BESS design matters

Why Battery Energy Storage Design Matters

A properly designed Battery Energy Storage System improves reliability, supports renewable energy integration, provides backup to critical loads and helps modern power systems respond more effectively to changing demand conditions.

By addressing discharge behaviour, temperature effects, capacity margins, efficiency and control logic, BESS projects can deliver better long-term technical and commercial value.

  1. 1

    Support Critical Loads

    Ensure essential systems continue operating when normal AC supply is interrupted.

  2. 2

    Improve Renewable Utilisation

    Store energy effectively and improve the usability of solar and wind generation.

  3. 3

    Enhance System Stability

    Support voltage, fast response and overall network performance for demanding applications.

  4. 4

    Account for Real Operating Conditions

    Consider temperature, duty profile, discharge levels and battery aging in the design stage.

  5. 5

    Deliver Better Long-Term Value

    Improve lifecycle performance, reliability and technical fit for the intended application.

About us

About us – where vision meets execution!

iEngineering Australia is a trusted engineering partner delivering advanced electrical and energy solutions across Australia, Fiji and India. Our team supports utilities, industrial facilities, renewable projects and infrastructure developments with practical design, technical studies, compliance support and field-focused engineering services.

Our Mission

Our mission is to improve electrical safety, system reliability and engineering quality by delivering practical, standards-aligned solutions that create long-term value for our clients and stakeholders.

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Our Vision

To be a trusted engineering partner across Australia, Fiji, India and the Pacific, delivering resilient, future-ready and reliable infrastructure solutions for utilities, industry and the built environment.

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Our Values

We work with integrity, accountability and technical excellence, with a strong focus on safety, clear communication, quality delivery and long-term client partnerships.

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Our Journey

Founded in 2013, iEngineering Australia has grown into a multidisciplinary engineering business supporting electrical, energy and infrastructure projects with design, studies, testing, consulting and implementation support. Our work combines technical depth with practical delivery experience to help clients solve real project and operational challenges.

Where We Operate

iEngineering Australia operates across Australia, Fiji and India, delivering reliable engineering and technology solutions to local businesses, utilities, contractors, developers and large multinational organizations.

India – Pune

Phone: +91 9168627258

Email: shila@iengaust.com.au

Navale IT Zone, Office No. 501, 5th Floor, A-Wing, Near Navale Bridge, Mumbai-Bangalore Highway, Narhe, Pune – 411041.

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