Project features

ACWA Power signed an investment agreement with the MoE and a 25-year PPA with NEGU for the development, construction, and operation of the Samarkand 1&2 Projects, the largest combined solar and battery storage project in Central Asia. Under this agreement, ACWA is responsible for 100 MW, 400 MW, and 500 MW PV areas, a 1,336 MWh BESS, the 500/220 kV grid substation in Nurabad, and a Pooling substation for NEGU.

Services provided

Basic & Detailed engineering design Nurabad GSS 500/220 kV:

• Basic engineering design, BoQ
  • Develop design criteria for each discipline, conceptual HVAC, civil & architectural conceptual design
  • Protection & Control, Metering, SCADA & telecom network topology & cybersecurity architecture 
  • Perform short circuit, load flow, HV/LV equipment, DC&UPS and ACSR & cable sizing calculations;
  • Preparation of technical specifications & datasheets
• Procurement support:
  • Tender technical evaluation including a comparative summary of the requirements requested and offered to facilitate the decision-making process for award from a technical point of view;
  • Support during the technical negotiations with the selected bidder. 
• Detailed Design and final BoQ including: 
  • Substation primary electrical engineering, cable tray/trench, HV equipment installation detailed drawings. 
  • Levelling/Earthwork & drainage system, civil & architectural engineering design.
  • Water supply and sewage, HVAC, Firefighting and fire alarm system.
  • Develop detail design of cybersecurity and telecommunication systems, CCTV equipment and security.
  • Earthing & lightning protection design.
  • Development of the Emergency Control Automation (ECA) detailed design.
  • Review/Adaptation of the design documentation:
• 100MW/400MW/500MW PV substation & PV area, Pooling substation.
  • Design adaptation of SLDs, PSLD, Basic RPA design, General and electrical layout & cross-section drawings, equipment layout drawings;
  • Design adaptation of Architectural Drawings of the buildings;
  • Design adaptation of foundations& steel structure details of the buildings and HV/MV equipment and gantries;
  • Design adaptation of the HVAC, WSS systems, firefighting and fire alarm & detection systems
• BESS-1&2 substation & plant area (2x500MW).
  • Design adaptation of SLDs, PSLD, Basic RPA design, General and electrical layout & cross-section drawings, equipment layout drawings;
  • Design adaptation of Architectural Drawings of the buildings;
  • Design adaptation of foundations& steel structure details of the buildings and HV/MV equipment and gantries;
  • Design adaptation of the HVAC, WSS systems, firefighting and fire alarm & detection systems;
  • Design adaptation of Cable line from BESS-1 to Nurabad GSS 
  • Design adaptation of Cable line from BESS-2 to Karakul existing substation.
  • Developed Fire Risk Assessment / Fire Safety Design for BESS Plant
• Permitting support: 
  • Support obtaining final approval on the design documents and support during the technical negotiations from all relevant local authorities for the design & adopted documents.