Renewable Energy and Hybrid Plant Switchgear RFQ Guide

Prepared by: JCON ELECUpdated: 2026-10-16

Short answer

A wind, solar or storage hybrid RFQ needs one coordinated collector and auxiliary-power diagram, with each generator and control interface assigned. Define MV feeders, substations, protection, metering and PPC/SCADA/EMS responsibilities separately; switchgear supply alone does not establish whole-plant grid compliance.

KYN28 medium-voltage switchgear for distribution package review

Coordinate collection, auxiliary power and the connection point

A hybrid plant can combine wind, PV and storage equipment from several suppliers. Define the collector network and control interfaces before quoting the distribution package, with each asset's scope clearly identified.

Collector feeders, bus sections, metering and protection at the specified MV level.
Substation and auxiliary distribution interfaces for plant operations.
PPC, SCADA, EMS and turbine/inverter interfaces assigned to the responsible parties.

Supply scope and interfaces

Supply scope and interfaces
Package item	Information to confirm	Boundary to agree
Collector network	MV voltage, feeder schedule, fault duty, earthing and metering	Identify the connection point and each generation-unit interface
Substation and auxiliaries	Transformer and switchgear scope, auxiliary loads and expansion	Separate equipment supply from civil works and plant EPC
Plant control and grid compliance	PPC/SCADA/EMS protocols, signals, trip logic and studies	Assign integration, settings, commissioning and grid approval

Information to include in the RFQ

Plant topologyWind/PV/storage capacities, AC- or DC-coupling concept, SLD, collector feeders and connection point.

Network parametersVoltage, frequency, busbar current, fault level, earthing, CT/PT and protection functions.

Control responsibilityPPC/SCADA/EMS scope, communication protocol, signal list, remote control and intertrip interfaces.

Environmental conditionsAltitude, temperature, humidity, corrosion, IP, enclosure arrangement and transport access.

Utility and contract basisOwner specifications, utility rules, approved brand list, required studies, documents, tests and delivery schedule.

Related distribution equipment

Medium Voltage Switchgear

Incoming, metering, bus section and feeder panels with project-specific protection.

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Ring Main Unit (RMU)

Compact incoming and transformer feeder units with specified protection and accessories.

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Prefabricated Substation

Coordinated MV, transformer and LV package boundaries for project review.

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How to compare supplier quotations

Same connection boundaryCompare the same collector and auxiliary scope; distinguish equipment supply from the full plant EPC contract.

Control compatibilityCheck signals, metering, trip ownership and communication with the plant controller and generating assets.

Confirmed voltage classOnly offer ratings supported by the selected equipment and project documents; review higher-voltage scope separately.

Staged executionDefine phase expansion, feeder reservations, drawing approval, FAT and on-site integration responsibilities.

Frequently asked questions

How is a renewable hybrid guide different from a PV guide?It focuses on coordinating multiple generating or storage assets, collector feeders, common auxiliary systems and shared plant-control interfaces.

Does supplying MV switchgear guarantee grid-code compliance?No. Compliance also depends on generating assets, control systems, studies, settings and utility approvals. Responsibilities must be assigned in the project scope.

Can phased expansion be considered?Yes, when the RFQ states future asset capacity, feeder quantity, layout and control requirements. Reserve provisions need technical review and approval.

Sources and scope

This JCON ELEC procurement guide organizes equipment and interface questions for project review. JCON product pages describe available equipment families; external manufacturer material is technical background, not evidence of JCON authorization, certification or a complete plant offer. Final ratings, compliance and responsibilities require approved project documents and an agreed supply scope.

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