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Solar PV in Erdington for MJ Quinn Solar

Client: MJ Quinn Solar
End Client: BT Group
Location: BT Exchange, Erdington, Birmingham
System Size: 120 kW
Annual Output: 78.2 MWh

Project Overview

MJ Quinn Solar designed a high-performance solar PV system for BT Group’s Erdington exchange.
Harlan Electrical carried out the full installation and commissioning, ensuring safe, compliant delivery that met strict commercial standards and sustainability goals.

Installation Process

Working on a live telecoms site demanded a meticulous approach. Our team at Harlan Electrical:

  • Collaborated closely with BT engineers to schedule works around network-critical times.
  • Implemented stringent isolation procedures to protect BT’s infrastructure and eliminate the risk of downtime.
  • Used temporary power solutions and staged commissioning to maintain continuity across essential systems.
  • Conducted live system integration testing to validate performance without service interruptions.

This proactive coordination ensured that the solar installation was completed without impacting BT’s operational telecoms network.

System Highlights & Purpose

  • SolarEdge Synergy Inverters
    Efficient three-phase inverters that provide high energy yield with advanced grid compliance and flexibility for large commercial systems.
  • SolarEdge Power Optimisers
    Attached to each solar module to enable module-level monitoring, increase energy output, and provide rapid shutdown capabilities for safety.
  • DC Fuses on Each String
    Protects each string of panels by interrupting the circuit if a fault or short-circuit occurs, improving overall safety and serviceability.
  • AC & DC Surge Protection Devices (SPDs)
    Shields the system from voltage spikes caused by lightning or grid disturbances, ensuring equipment longevity and system reliability.
  • SolarEdge Commercial Gateway
    Enables real-time system monitoring and remote diagnostics through the SolarEdge cloud-based platform.
  • SolarEdge Firefighter Gateway
    Provides a critical safety function by allowing first responders to safely shut down the system remotely in case of emergency.