Power Systems Studies

Conducting power system studies is key for ensuring the secure, efficient, and dependable operation of electrical networks.

With in-house experts in power systems, Zero Grid is proud to provide power systems expertise for either Power Systems Consultancies, Grid Innovation Businesses, utilities and generation developers including:

• Load flow, voltage regulation, and reactive power capability
• Short-circuit and fault level
• Dynamic RMS and EMT model development
• Bespoke power systems automation with Python/Matlab
• G99 and Grid Code compliance studies
•       Voltage fluctuation and flicker (ER P28) and voltage unbalance (ER P29)
•       Harmonic studies (G5/5) and filter design
•       Fault ride through and fast fault current injection
•       Voltage control and reactive power stability
•       Frequency response (LFSM-O, LFSM-U, FSM)

Curtailment Studies

Quantifying risks and maximising project value

Curtailment can significantly affect the financial viability of renewable energy projects. At Zero Grid Consulting, we deliver advanced curtailment assessments to provide developers, investors, and operators with an accurate understanding of potential constraints on their assets.

Using time-series power flow simulations and historical network data, our studies move beyond the overly conservative assumptions often applied by network operators. This allows us to capture realistic operational behaviour, enabling more informed decision-making.

Our curtailment studies typically include:

• Time-series modelling
• Constraint analysis
• Scenario testing
• Financial impact assessment
• Mitigation strategies

Grid Connection Feasibility

Grid feasibility studies enhance visibility, identify risks, and anticipate delays in the early stages of generation projects. They play a vital role in the decision-making process of the project investment.

• Grid feasibility studies and strategic advice
• Grid connection due diligence
• Behind the meter connection feasibility
• Flexible connection feasibility

Whether you’re looking for a new development or you have an old plant and would like to add renewable generation, Zero Grid is here to identify the best solution for you.
Zero Grid will carry out an initial assessment of your site, any existing connection agreements, demand/ generation technical data and will develop a grid connection approach strategy. We will organise connection surgeries with the DNO and conduct a technical discussion with their network engineers in order to extract the key grid information and identify potential risks and delays. Zero Grid will produce a full report showing both a light summary of the connection options and a more in depth discussion of the technical and commercial implications of each grid connection options identified.

Grid Connection Applications

Complete preparation and submission of G99 and transmission connection applications.

We manage the full submission process, ensuring applications are accurate, compliant, and aligned with Distribution and Transmission Operator requirements. Our experience spans DNO G99/DRC and ESO/TO BEGA, BELLA and BCA applications across renewable and storage projects.

• Application forms and site details
• Generator technical data sheets
• Single Line Diagrams & Red Line Boundary plans
• Interface protection and fault level contribution
• Project plans and milestone schedules
• Liaison with DNOs, TOs and National Grid ESO
• Responses to operator queries

Offshore Windfarm Studies

Feasibility, conceptual design and detailed electrical studies for offshore projects.

We bring extensive offshore experience, delivering feasibility and FEED-level studies for major UK and European projects. Our expertise spans electrical design, system integration and compliance with Grid Code and offshore network requirements.

• Conceptual electrical design (array, export, substations)
• Reactive power and compensation (reactors, STATCOM)
• Subsea cable modelling and load flow
• Fault level and short-circuit ratio studies
• Offshore platform layout optimisation

Power Quality Data Analysis

Benchmarking plant performance and identifying cost-saving opportunities

Zero Grid Consulting provides advanced Power Quality Data Analysis to help clients improve system efficiency, reliability, and compliance. By analysing high-resolution PQ data against international standards, we identify inefficiencies, hidden costs, and opportunities for optimisation. Our assessments not only support compliance with IEEE/IEC standards but also deliver actionable insights that can lead to significant operational savings.

• Remote configuration and analysis of power quality meters
• Demand and load profile analysis (kW, kVAr, kVA, RMS voltage)
• Power factor assessment and correction recommendations
• Harmonic analysis (individual magnitudes & Total Harmonic Distortion)
• Evaluation of flicker, voltage unbalance, and other PQ indicators
• Detailed reporting with graphical data validation
• Strategic recommendations for system upgrades and cost reduction

Power Systems Automation

Applying innovative thinking and automation is crucial for accelerating renewable integration.

This is our core expertise where we aim to streamline any engineering process by applying innovation, AI, process optimisation and coding. If it is within our area of expertise, we are happy to check, improve, design, or redesign any process ranging from grid studies to non-technical regulatory and strategic decisions making processes. Areas that could be optimised include:

• Power systems studies and modelling
• Innovation projects and smart grids
• Network operators grid studies and processes
• Strategic grid connection processes
• Prototype development
• Testbench development for texting new grid technologies
• Power quality data mining

Earthing Studies

Earthing design studies are essential to ensuring that the earthing system is capable of meetings its safety and functional requirements.

Our experts provide specialized and general earthing design services for all phases of a project’s development, from concept design through to operations. We cater to a range of industries including renewables, utility, commercial amongst others. Our services can be tailored to each project and include:

• Feasibility Studies
• Detailed Earthing Design Studies
• Electromagnetic Interference Studies
• Design Verification Studies
• Fault Current Distribution Calculations
• Rise of Earth Potential Assessments
• Earthing Measurement Interpretations

Engineering Design

End-to-End Design Solutions for Solar PV, BESS, and Wind Projects

We provide complete design solutions for utility-scale and commercial solar PV sites, battery energy storage systems (BESS), and onshore wind farms, engineered for technical robustness, regulatory compliance, practical buildability, and long-term performance.

Our designs combine engineering precision, regulatory compliance, and construction practicality, giving you a blueprint that’s ready for planning approval and efficient on-site delivery. We take a holistic approach from resource and feasibility studies through detailed electrical/civil engineering to SCADA/controls integration.

Every design is tailored to site-specific conditions, grid/DNO requirements, and financial objectives to deliver reliable performance and long-term value.