Solar PV Systems Engineering & Compliance

$5000-10000 USD

Closed

Posted 7 days ago

$5000-10000 USD

Paid on delivery

Electrical Engineering, ETAP Modeling, and Utility Interconnection Design Rincon Solar Portfolio – Ventura, CA (SCE Rule 21 Interconnection) 1. PROJECT OVERVIEW Off Grid Innovations (OGI Solar) is developing a portfolio of solar PV systems interconnected to an existing 16 kV distribution system in Ventura, California under SCE Rule 21. USE LINK TO ACCESS ETAP FILES - [login to view URL] Total System Size: ~12.3 MW AC Voltage: 16 kV primary distribution Interconnection: SCE Grandad 16 kV Circuit (Casitas Substation) The purpose of this scope is to engage a qualified engineering firm to provide: Full power system modeling (ETAP) Protection & coordination design Medium voltage interconnection engineering Utility (SCE) compliance package IFC-level design deliverables 2. OBJECTIVE Deliver a complete, utility-c ompliant engineering package that: Supports procurement (equipment POs immediately) Meets SCE Rule 21 interconnection requirements Enables rapid submission of design package to SCE Avoids redesign or restudy triggers 3. DETAILED SCOPE OF SERVICES 3.1 ETAP MODEL DEVELOPMENT & VALIDATION Engineer shall: Review and validate existing ETAP model (if provided) Develop complete ETAP model of: 16 kV distribution system All PV generation sites Transformers, feeders, switchgear, and loads Confirm: Transformer impedances and ratings System topology vs field conditions Equipment interrupting ratings Required Studies: Short Circuit Analysis (utility + PV contribution) Load Flow Analysis (normal + contingency) Voltage drop / regulation analysis Equipment duty validation (AIC checks) Expanded Requirements (SCE-driven): Model fault contribution and SCCR compliance (SCE identified SCCR exceedance) Model reverse power flow impacts Validate inverter fault contribution assumptions 3.2 PROTECTION & COORDINATION STUDY (FULL SCOPE) Engineer shall provide a complete protection study, including: Time-Current Coordination (TCC curves) Relay coordination across: Utility interconnection MV distribution Transformer secondaries Selectivity analysis (upstream vs downstream) MUST INCLUDE: Multiple operating scenarios: All PV online Partial generation scenarios Fault conditions at POI Identification of: Equipment rating violations Mis-coordination risks Deliverables: Protection philosophy document Relay settings Coordination plots Mitigation recommendations Note: SCE explicitly requires a coordination study during final engineering 3.3 MEDIUM VOLTAGE (16 kV) INTERCONNECTION ENGINEERING Engineer shall design the full MV system including: Interconnection to SCE circuit at POI Transformer configuration and grounding MV cabling, routing, and protection REQUIRED UTILITY INTERFACE COMPONENTS: A. Recloser Integration Design and integration of: 16 kV Remote Sectionalizing Recloser (RSR-G) Coordination with system protection B. Metering Design Bi-directional metering system design CT/PT sizing and placement Revenue-grade metering compliance C. AC Disconnect / Switching Evaluate and design required switching scheme Confirm compliance with utility isolation requirements 3.4 RTU, SCADA, AND TELECOMMUNICATIONS DESIGN Engineer shall provide full design for utility communication interface: RTU Requirements: Integration of dedicated RTU system Monitoring of: MW / MVAR Voltage Breaker status Telecommunications: Design communication pathway to SCE EMS: T1 circuit interface Signal architecture Termination design Deliverables: Communication diagrams RTU wiring diagrams Data point mapping list 3.5 DAS / EMS INTEGRATION SUPPORT Engineer shall coordinate with DAS/EMS provider (e.g., Wave, AlsoEnergy, etc.) to: Ensure compatibility with: RTU system Utility telemetry requirements Provide: Data mapping architecture Integration requirements for DER monitoring 3.6 SCE DESIGN PACKAGE (SUBMITTAL READY) Engineer shall produce a complete SCE-compliant design package, including: IFC Single Line Diagrams Protection and control schematics Equipment specifications and cut sheets Site plans and electrical layouts Switchgear drawings compliant with SCE ESR requirements Must Support: SCE design review process Interconnection Agreement compliance Rapid approval (no redesign loops) 3.7 COMMISSIONING & COMPLIANCE SUPPORT Engineer shall support: Pre-commissioning validation Utility witness testing Final commissioning testing per Rule 21 3.8 REGULATORY & TECHNICAL COMPLIANCE Design must comply with: SCE Rule 21 requirements Smart inverter requirements Ramp rate requirements Utility protection standards Wildfire mitigation considerations (if applicable) 4. DELIVERABLES At minimum, engineer shall provide: ETAP model (editable format) Short circuit & coordination study report Protection settings and TCC curves Full IFC drawing set Communication / RTU diagrams SCE-ready design package Engineering memo with findings & recommendations 5. SCHEDULE REQUIREMENTS (CRITICAL) Project is on an accelerated timeline. Initial ETAP model + preliminary results: ≤ 7 days Protection study + coordination: ≤ 10–14 days Full IFC design package: ≤ 2–3 weeks Must support equipment procurement by next week 6. QUALIFICATIONS Firm must demonstrate: Experience with SCE Rule 21 interconnections Strong ETAP modeling capabilities Proven MV protection & coordination experience Experience with utility RTU / SCADA integration 7. EXCLUSIONS (NOT ALLOWED UNLESS EXPLICITLY STATED) The following cannot be excluded unless clearly noted in proposal: Protection coordination study MV interconnection design RTU / telecom integration Utility compliance support

Electrical Engineering

Digital Electronics

Engineering

Solar

Project ID: 40399446

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10 freelancers are bidding on average $8,000 USD for this job

@umg536

With over a decade of experience in the industry and a proven specialization in electrical engineering and solar systems, my team at Modular Solutions is more than equipped to take on your Solar PV Systems Engineering & Compliance project. Our expertise extends to ETAP modeling and utility interconnection design, two core requirements of your venture. We can diligently review and validate the existing ETAP model or develop a new one expertly detailing the structure of the entire 16 kV distribution system while incorporating comprehensive analysis to anticipate various operating scenarios. Our skill set clearly syncs up well with your project description as alongside strong familiarity with multiple digital tools including ETAP, we are also well versed in data analysis and modeling aspects like fault contribution, SCCR compliance, reverse power flow impacts, Time-Current Coordination (TCC curves), relay coordination among others mentioned explicitly by SCE as requirements. To further strengthen our presence in your project we have extensive experience in other required areas such as medium voltage (16kV) interconnection engineering covering transformer design, MV cable routing, cabling etc., RTU, SCADA and telecommunications design etc. You can count on us for all these detailed technical aspects while providing efficient communication diagrams, wiring diagrams etc., necessary for effective implementation fo utilitycommunication interface.

$10,000 USD in 7 days

5.0

(53 reviews)

7.3

@AITSoft

Hello, I understand you’re building a Rincon Solar portfolio in Ventura, CA, totaling ~12.3 MW AC on a 16 kV distribution with SCE Rule 21 interconnection. My approach is to start with validating or building the ETAP model for the 16 kV feeder, PV sites, transformers, and protection topology, then run short-circuit and load-flow studies that capture utility and PV contributions, voltage regulation, and SCCR constraints. I’ll design a full MV interconnection scheme, including recloser integration, metering, and POC switching, plus a complete protection and coordination study across MV, transformers, and upstream/downstream devices. The RTU/SCADA and telecom design will align with SCE EMS interfaces and ensure data mapping for DER monitoring. I’ll deliver IFC-ready drawings, SCE-compliant design package, and commissioning support to meet your accelerated timeline, enabling procurement next week. The deliverables will be editable ETAP files, clear coordination plots, protective settings, and a comprehensive findings memo to avoid redesign loops. What is the preferred sequencing for interconnection workstreams (ETAP validation, protection coordination, MV interconnection design, and SCE document package) given the aggressive timelines, and are there any site-specific constraints we should account for up front? Which ETAP version and any existing model artifacts are available for validation? Do you have preferred vendors or standards for metering and RTU interfaces to ensure EMS

$10,000 USD in 21 days

5.0

(1 review)

6.6

@kashifsani

Dear Sir, With almost two decades of experience under my belt as an Electrical Engineer, I'm confident in my ability to deliver the comprehensive, utility-compliant engineering package you require. Notably, I have a deep understanding of complex electrical systems and extensive experience with ETAP modeling, protection & coordination design, and utility interconnections- all of which align perfectly with your project goals.

$5,000 USD in 15 days

4.6

(36 reviews)

6.3

@mobasherreza10

Hi there, I see that you are looking for a reliable electrical engineering firm to provide ETAP modeling, protection and coordination studies, MV interconnection design, RTU/SCADA integration, and an SCE‑ready package for your ~12.3 MW AC solar portfolio in Ventura, CA, with an accelerated timeline. I have extensive experience with SCE Rule 21 interconnections, including a recent 8 MW project where I delivered the full ETAP model (short circuit, load flow, equipment duty), a protection coordination study with TCC curves, recloser and metering design, RTU communication diagrams, and an IFC drawing set that passed SCE design review without major revisions. I can complete the initial ETAP model within 7 days, the protection study within 14 days, and the full IFC package within 3 weeks. I can access your ETAP files via the Google Drive link you shared. Let me know your preferred coordination meeting schedule. Best regards, Mobasher Reza

$7,500 USD in 3 days