Star Delta Power

Precision Grid Connection Engineering

Expert G99 compliance studies for UK renewable energy projects. We deliver complete grid connection packages that meet DNO requirements first time.

Grid Connection Services

We deliver complete G99 compliance packages for developers and EPCs connecting generation assets to the UK distribution and transmission networks.

Type C Connections

Complete G99 packages for projects <50MW connecting at distribution voltage levels (11kV, 33kV, 66kV).

  • All G99 required studies
  • SAF & PGMD submission
  • DNO coordination
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Type D Connections

Transmission or distribution-level projects at ≥110kV or installations ≥50MW regardless of voltage level.

  • Full Type C scope included
  • Transmission interface requirements (if applicable)
  • ESO coordination (if applicable)
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Power System Studies

Individual power system studies available when you need specific analysis rather than a complete package.

  • Load flow & short circuit
  • Protection coordination
  • P28 & G5/5 compliance
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Technical Capabilities

With extensive experience across all major UK DNOs, our team understands exactly what's required for efficient DNO approval.

DIgSILENT PowerFactory Load Flow Analysis Short Circuit Studies Protection Coordination Dynamic Studies P28 Compliance G5/5 Harmonics Cable Sizing (IEC 60287) Reactive Power Studies RMS & EMT Simulations

Chartered Engineer Leadership

Our team is led by CEng-registered engineers with deep expertise in UK grid codes. Every project benefits from professional oversight and rigorous technical standards.

UK Grid Specialists

We work exclusively on UK grid connections. This focus means we understand DNO preferences, stay current with code changes, and know what's needed for approval.

End-to-End Support

From initial SAF submission through to ION approval, we coordinate with DNOs and ICPs throughout the connection process—not just isolated studies.

Proprietary Tools

Our in-house software including EasyCableSizing enables faster, more accurate delivery than traditional methods.

CEng Chartered Engineers
£5M Professional Indemnity
IET Member Institution
Est. 2018 UK Registered Company

Engineering Resources

Access our collection of free power systems calculators and tools.

IDMT Protection Curves

Calculate trip times, compare test results, and grade protection curves.

Open tool →

Power Calculator

Calculate relationships between active, reactive, and apparent power.

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Transformer Tools

Losses calculator and X/R value converter for transformer analysis.

Open tool →

Start Your Project

Tell us about your grid connection requirements. We typically respond within one business day.

Prefer to reach out directly?

enquiries@stardeltapower.co.uk

Star Delta Power Ltd · Registered in England No. 11200303 · £5M PI Insurance