Services

Modelling

Accurate and flexible models of modern power systems, from transmission to the component level. Our simulations capture the complexity of converter-based grids, enabling robust analysis and decision-making for operators, planners, and technology providers.

At eRoots, we believe that every great power system study begins with an accurate model of reality. Without this solid foundation, decisions lack the depth and reliability that grid operators, developers, and technology providers require. That is why we place such strong emphasis on building detailed, high-fidelity models that capture the essence of how power systems behave, from steady-state operating points to fast dynamic responses under stress. Our models are not just technical artefacts; they are decision-making tools that empower our clients to understand their systems and plan with confidence.

Our expertise lies in combining industry-leading knowledge with the best software platforms available. We are proficient across PSCAD, PowerFactory, and MATLAB/Simulink, which means we can adapt to the workflows our clients already use or provide independent support where needed. This flexibility ensures seamless collaboration and faster project delivery, while guaranteeing the same level of technical excellence across different environments.
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The range of components we can model is wide and always expanding. We build and refine models for:
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Synchronous machines for stability and generation planning.
Electrolyzers as part of tomorrow’s integrated energy systems.
Power lines and transmission assets that determine network capacity.
Transformers with detailed loss and thermal behaviour.
STATCOMs and FACTS devices for reactive support.
Grid-following converters that dominate renewable integration today.
Grid-forming converters that underpin the stability of converter-dominated grids.
Regional networks for coordinated operation.
Continental-scale grids where complexity and resilience meet.

Our capability spans every modelling domain: EMT for the finest transient detail, dynamic phasors to capture oscillatory dynamics, RMS for medium-term stability, and steady-state models, both linear and non-linear, for planning and optimisation. Depending on the study objectives, we advise on the right level of complexity, ensuring the perfect balance between accuracy and computational efficiency. And when manufacturer-specific controllers or advanced functions are required, we support direct integration of .dll files, assuring our clients that what they simulate matches real-world performance.
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Renewables integration

Seamless integration of renewable energy into power networks. From connection studies to stability assessments, we ensure wind, solar, and storage projects meet grid codes while maximising their value to the system.

At eRoots, we are committed to making the connection of renewable energy sources both faster and more reliable. As power systems evolve, integrating large volumes of solar, wind, and hydrogen requires not just technical know-how but also advanced tools that streamline the process. Our mission is to remove barriers and accelerate the transition to a cleaner, more resilient grid by combining deep engineering expertise with powerful software-driven approaches.

We have developed state-of-the-art tools and methodologies designed specifically to support the smooth integration of renewable generation and hydrogen systems into existing and future networks. Over the years, our team has played a central role in a wide variety of grid integration consultancy projects, ranging from utility-scale solar PV parks and offshore wind farms to onshore renewable clusters and hybrid plants. This experience has given us a unique understanding of the challenges faced by developers, TSOs, and DSOs, and the solutions needed to overcome them.

Our solutions extend across a broad range of services and studies, including:
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Automated integration workflows that accelerate the connection process for renewable plants and hydrogen facilities.
Electrical installation design and sizing, ensuring cost-effectiveness while meeting strict technical standards.
AC and DC collection system studies, enhanced by our proprietary AI algorithms to achieve faster and more accurate results.
Advanced short-circuit calculations that incorporate converter-specific limitations and behaviour, delivering a realistic picture of fault performance.
Grid code compliance analysis, helping clients meet regulatory requirements and enabling faster project approvals.
Small-signal stability studies to uncover potential interactions, oscillations, and vulnerabilities before they become issues.
Plant and converter controller design and validation, ensuring that renewable assets contribute positively to system stability and reliability.

What makes our approach different is not only the technical depth but also the speed and adaptability of our processes. By leveraging automation, custom algorithms, and advanced modelling, we reduce the time it takes to move from initial studies to actionable results. This allows our clients to accelerate permitting, reduce development risks, and enter operation with confidence.
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HVDC and FACTS

Expertise in HVDC and FACTS technologies, helping unlock flexibility and stability in modern grids. We provide advanced modelling and analysis to plan, design, and optimise these assets for reliable operation under evolving system conditions.

As power systems expand and evolve, the need for reliable, efficient, and sustainable transmission solutions has never been greater. Long-distance energy transport, system stability, and the integration of renewables all depend on advanced technologies that can push the boundaries of today’s grid. High-Voltage Direct Current (HVDC) and Flexible AC Transmission Systems (FACTS) stand at the centre of this transformation, offering powerful tools to deliver electricity where it is needed most, while maintaining the stability and flexibility required by modern networks.

At eRoots, we specialise in unlocking the full potential of these technologies. We combine deep technical expertise with practical project experience to help utilities, manufacturers, and developers design and implement HVDC and FACTS solutions that are both innovative and dependable. Our work ranges from component-level design to large-scale system studies, ensuring that every project benefits from insights that are both technically rigorous and future-ready.

We support our partners in a wide range of topics, including:
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Design and sizing of HVDC links and FACTS devices for diverse applications, from interconnectors to renewable integration.
Converter design for HVDC and FACTS, ensuring efficiency, controllability, and resilience.
Modular Multilevel Converter (MMC) design and control, tailored for the most advanced HVDC and FACTS projects.
HVDC multi-terminal and meshed networks, enabling the backbone of future supergrids.
Current flow controllers and grid optimisation strategies to maximise transfer capacity and reliability.
Interaction and stability studies addressing converter dynamics and system-wide impacts.
EMT and phasor-domain simulations, providing a comprehensive view of performance under both steady-state and transient conditions.

What makes our approach unique is the combination of cutting-edge modelling techniques and practical integration experience. We know that HVDC and FACTS projects are not only about technology, but also about regulatory compliance, operational security, and future-proof scalability. By leveraging advanced simulations, rigorous stability analysis, and hands-on experience, we deliver solutions that reduce risk, shorten project timelines, and enhance system performance.

From early-stage concept design through to detailed engineering and validation, eRoots is a trusted partner in developing the HVDC and FACTS systems that will form the backbone of tomorrow’s energy infrastructure. We bridge the gap between innovation and implementation, helping clients build stronger, more resilient, and more sustainable grids.
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Expansion planning

We deliver advanced planning tools and methodologies to guide grid expansion, balancing performance, regulatory requirements, and investment efficiency, helping to design resilient networks for the future.

Planning the future of power systems requires not only robust software tools but also deep expertise in both steady-state and dynamic behaviour. At eRoots, we bring together these capabilities to design, analyse, and optimise the expansion of networks, particularly in regions where the challenges are greatest: islanded systems, weak grids, and areas with high renewable penetration. Our mission is to help utilities, developers, and policymakers build networks that are not only technically sound but also resilient, sustainable, and cost-effective.

Our experience in grid expansion and development is especially strong in cases involving electrical islands, whether they are remote isolated systems, geographical islands with growing renewable installations, or even artificial islands designed as future energy hubs. These environments are uniquely demanding: limited interconnections, high exposure to variability from renewables, and the need to guarantee power quality at all times. By combining advanced modelling with practical insight, we deliver tailored solutions that balance security, efficiency, and investment needs.

The solutions we offer span a broad range of analyses and recommendations, including:
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Power flow and short-circuit studies to provide a clear picture of system capacity and fault performance.
Frequency, voltage, and transient stability assessments to ensure robust operation under normal and stressed conditions.
Identification of critical network nodes and lines, highlighting where reinforcements will have the highest impact.
Optimisation-driven battery sizing and placement, maximising the value of storage investments in supporting stability and flexibility.
Recommendations on grid upgrades and investment strategies, aligning technical requirements with economic constraints.
System resiliency assessments, addressing both short-term reliability and long-term adaptability to future energy transitions.

What makes eRoots different is our ability to combine rigorous analysis with actionable strategies. We do not simply simulate scenarios, we provide clear pathways for strengthening grids, reducing risks, and enabling greater renewable penetration without compromising quality of service. Our integrated approach ensures that every recommendation is backed by data, grounded in technical reality, and designed to be implemented effectively.

By partnering with eRoots, utilities and developers gain more than just studies; they gain a roadmap for building networks that can stand the test of time, resist disruptions, and evolve with the accelerating pace of the energy transition.

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