The PC Tender for the 100MW/400MWh Grid-Side ESS Project at the 500kV Substation in Bayannur, Inner Mongolia

On April 22, Bayannur Energy Group's Bane (Wulate Zhongqi) Energy Management Co., Ltd. released a tender announcement for the PC general contracting of the grid-side ESS project at the Delingshan 500kV substation in Wulate Zhongqi, Bayannur City. The project is located near Delingshan Town, Wulate Zhongqi, Bayannur City, Inner Mongolia Autonomous Region, with a construction scale of 100MW/400MWh. The ESS adopts a fully outdoor prefabricated cabin layout, with 80 battery prefabricated cabins and 20 PCS step-up transformer prefabricated cabins placed outdoors. There are 20 sets of ESS battery unit groups, each with a capacity of 5MW/20MWh, and each set of ESS battery unit group is connected to one integrated energy storage step-up (PCS) cabin. Each PCS cabin is equipped with two 2.5MW power conversion systems (PCS) and one 37±2x2.5%/0.69kV 5.25MVA dual-winding dry-type step-up transformer. Every five 35kV step-up transformers are aggregated into one 35kV collection line through T-connection, forming a total of four 35kV collection lines, which are respectively connected to the 35kV system within the 220kV step-up substation. A 100MVA main transformer is installed in the 220kV step-up substation, and after stepping up to 220kV, it is connected to the 220kV side of the Envision Wulate ESS station via a 220kV overhead line. Bidders are required to have an accumulated performance of no less than 2GWh in LFP battery ESS integration projects in China since January 1, 2022, based on the contract signing date. Grid-Side ESS Project at the Delingshan 500kV Substation in Wulate Zhongqi, Bayannur City PC General Contracting Tender Announcement (Tender Project No.: K1508242025042101) Project Location: Wulate Zhongqi, Bayannur City, Inner Mongolia Autonomous Region Project Category: Energy Engineering Projects, Project Content: New Energy Infrastructure Projects 1. Tender Conditions The grid-side ESS project at the Delingshan 500kV substation in Wulate Zhongqi, Bayannur City, has been filed by the Bayannur Energy Bureau. The project owner is Bane (Wulate Zhongqi) Energy Management Co., Ltd., and the construction funds come from the owner's own capital and bank loans. The bid inviter is Bane (Wulate Zhongqi) Energy Management Co., Ltd. The project is now ready for public tender for PC general contracting. 2. Project Overview and Scope of Tender 2.1 Project Overview The project site is located near Delingshan Town, Wulate Zhongqi, Bayannur City, Inner Mongolia Autonomous Region, adjacent to the 500kV Delingshan substation to the north and the Envision Wulate Zhongqi Delingshan new-type ESS station to the east. The construction scale is 100MW/400MWh, adopting a fully outdoor prefabricated cabin layout, with 80 battery prefabricated cabins and 20 PCS step-up transformer prefabricated cabins placed outdoors. There are 20 sets of ESS battery unit groups, each with a capacity of 5MW/20MWh, and each set of ESS battery unit group is connected to one integrated energy storage step-up (PCS) cabin. Each PCS cabin is equipped with two 2.5MW power conversion systems (PCS) and one 37±2x2.5%/0.69kV 5.25MVA dual-winding dry-type step-up transformer. Every five 35kV step-up transformers are aggregated into one 35kV collection line through T-connection, forming a total of four 35kV collection lines, which are respectively connected to the 35kV system within the 220kV step-up substation. A 100MVA main transformer is installed in the 220kV step-up substation, and after stepping up to 220kV, it is connected to the 220kV side of the Envision Wulate ESS station via a 220kV overhead line. 2.2 Planned Construction Period: May 25, 2025, to September 30, 2025 (full capacity grid connection), totaling 128 calendar days (the actual start date will be notified by the bidder). 2.3 Scope of Tender: This project adopts a PC general contracting method, and the scope of the tender includes but is not limited to the procurement of all equipment and materials, construction, installation, commissioning, completion acceptance, and power transmission. The specific scope of the tender includes, but is not limited to, the following: (1) ESS Equipment Responsible for the procurement, supervision, transportation, unloading, storage, secondary handling, installation, grounding, testing, and commissioning of ESS equipment and materials, including but not limited to LFP batteries, PCS, battery cabins, AC step-up systems, local controller equipment, BMS and EMS systems, and cables of various specifications. (2) Step-Up Substation Engineering Responsible for all equipment in the step-up substation, including but not limited to cables, main transformers, distribution equipment, GIS, lightning protection and equipment grounding (including working, protective, and lightning grounding for electrical equipment, equipment supports, structures, and auxiliary devices), cable tower connections, conduit construction, construction signage, and permit processing. Also responsible for the procurement, supervision, transportation, storage, secondary handling, installation, grounding, metering, oil sample testing, testing, and commissioning of major equipment and materials, as well as quality and schedule control. (3) Civil Engineering Responsible for all foundation works of the ESS station, including but not limited to pile foundation, earthwork excavation, backfilling, and ground treatment. Responsible for all temporary facilities (including three utilities and one leveling), building and installation works, landscaping, and signage. This includes, but is not limited to, the construction of buildings, structures, and equipment foundations, station fences, internal and external roads, production and living cabins, fire pump rooms, fire pipe laying, cable trenches, water supply and drainage, and the demolition and backfilling of existing facilities within the ESS site. (4) Transmission Line Engineering Responsible for the high-voltage transmission lines and expansion or modification of the opposite side intervals (including but not limited to relay protection devices, dispatch communication automation devices), involving temporary land use, vegetation restoration, equipment and material procurement, civil works, installation, testing, commissioning, and acceptance. Ensuring perfect compatibility with the access station, and completing all necessary work for the operation and smooth transfer of the transmission lines, bearing all related costs. (5) Procurement and Installation of Other Equipment and Materials Responsible for the procurement, supervision, transportation, storage, secondary handling, installation, grounding, testing, and commissioning of all equipment and materials for the ESS, step-up substation, and transmission lines (including the expansion of the opposite side substation). Responsible for quality and schedule control, including but not limited to the procurement, supervision, and other related work for cables and cable fireproofing and sealing, secondary electrical parts, remote centralized control substations, video surveillance systems, communication and telecontrol systems, control and DC systems, grounding transformer equipment, backup power, fire alarm systems, full-station lighting, heating, ventilation, and air conditioning equipment. Responsible for the expedited delivery, transportation, insurance, receiving, unloading, warehousing, storage, acceptance, and secondary handling of all equipment and materials involved in grid connection and power transmission (including those provided by the employer). Also responsible for the production and installation of safety and equipment identification signs for the step-up substation and roads. Responsible for all work related to power quality inspection and acceptance, grid company grid connection approval, electrochemical ESS grid connection testing, environmental impact assessment, and water and soil conservation and environmental protection acceptance. (6) Fire Protection Engineering Installation and commissioning of the fire protection system and associated equipment, piping, water supply and drainage systems, and all electrical equipment, water and soil conservation, environmental protection, and safety fire protection equipment and facilities. Responsible for the fire protection acceptance, including daily communication and document submission with the Emergency Management Bureau or other relevant authorities, ensuring the fire protection acceptance is passed, completing the fire protection filing, and meeting the relevant requirements of government authorities and power companies. Installation, system integration, testing, and commissioning of the project's cables and cable fireproofing and sealing, secondary electrical parts, remote centralized control substations, video surveillance systems, communication and telecontrol systems, control and DC systems, grounding transformer equipment, backup power, fire alarm systems, full-station lighting, heating, ventilation, and air conditioning equipment, including individual, joint, and overall startup commissioning. (7) Commissioning and Grid Connection Costs Responsible for the inspection, calibration, cell testing, testing, commissioning, trial operation, and transition to commercial operation of all distribution equipment, including the ESS, step-up substation, transmission lines, cable systems, and relay protection and monitoring systems, with all related costs borne by the contractor. (8) Engineering Testing and Acceptance-Related Work Including, but not limited to, individual equipment handover tests, special tests, subsystem tests, protection calibration and transmission, overall startup commissioning, protection setting calculations, all grid-related tests, and security assessments. The test standards shall comply with the "Electrical Equipment Handover Test Standards for Electrical Installation Projects (GB50150-2016)" and meet the acceptance requirements of the local power authority. The contractor must conduct and submit reports for the entry and random inspections of equipment and materials (obtaining qualified third-party test reports), and the grounding resistance detection of the entire station grounding grid (obtaining qualified third-party test reports). The bidder is responsible for the third-party testing of electricity meters, gas, and oil samples, and obtaining qualified test reports. All testing costs are included in the contract price. (9) The bidder is responsible for the simulation modeling and power quality calculation of the ESS, and will cooperate with the step-up substation electromagnetic transient simulation modeling, electromechanical transient simulation modeling, secondary security and protection assessment, trading assistance decision-making system, and thermal runaway system. The equipment provided by the bidder must have highly open communication interfaces and open system communication protocols to meet the system integration needs of the bidder. The bidder ensures that the communication protocol of the ESS matches the local grid communication protocol and can freely assist the bidder in completing the development of the system integration platform. The bidder provides grid-related testing services, meeting the relevant requirements of the state, industry, and Inner Mongolia Power Group. (10) Other related projects, technical services, coordination, and procedural work for the ESS, including but not limited to power shutdown and resumption procedures, entry procedures, meeting the safety operation requirements of the ESS, power quality inspection and acceptance, third-party testing, construction coordination, grid coordination, and other unspecified but necessary coordination work for the ESS power transmission, and the coordination costs incurred during this period. Responsible for the review of construction drawings during the construction process. (11) Responsible for the construction of temporary access roads and temporary buildings during the construction of the ESS and transmission lines, and for the restoration of temporary access roads and temporary buildings after grid connection, meeting the requirements of the vegetation restoration plan. All related costs are borne by the contractor. (12) The contractor must assign dedicated coordination personnel to assist with permanent land acquisition, forest land acquisition, and grid connection, coordinating with the government and power companies. Actively participate in on-site inspections by leaders at all levels. The contractor should fully understand and consider the difficulty of coordination work and include the related costs in the bid price.

(13) Other Tasks

① Handle all permit documents related to project construction and bear the corresponding costs, including but not limited to: construction filing procedures, power quality supervision, power company acceptance coordination, lightning protection, fire protection, labor hygiene, etc.;

② Handle all procedures and acceptance work for the project except for environmental impact assessment and energy assessment (including but not limited to coordinating safety assessment, social stability, occupational disease prevention acceptance, assisting in completing building construction acceptance, etc.), complete the water and soil conservation projects required by the water and soil conservation plan approval (and coordinate the completion of water and soil conservation project acceptance) and environmental protection monitoring (including electromagnetic radiation monitoring) measures, and bear the corresponding costs;

③ Handle various tests and acceptance procedures before and after grid connection, obtain the corresponding reports, and bear the corresponding costs, including but not limited to: power quality testing, protection setting calculation, secondary security assessment, power company grid connection acceptance, third-party testing of the BESS from delivery to grid connection to meet the power grid acceptance requirements, compliance with the "Technical Regulations and Test Guidelines for Primary Frequency Regulation of Grid-Connected Power Sources" GB/T 40595, and calibration of instruments and meters by a third-party institution recognized by the local power grid company. All costs are included in the total contract price and will not be separately charged;

④ Undertake the relevant civil coordination work involved in the construction of this project, properly handle various social imbalances related to project construction, bear the temporary land use compensation for the ESS power station, permanent land use compensation for the transmission lines, and ground attachment compensation costs; bear the rental costs for temporary construction land (hoisting platforms, equipment transportation roads, storage yards, etc.) and ground attachment compensation costs; bear all compensation and planning approval procedures for the lines involved;

⑤ Insure the construction and installation engineering all risks insurance with an insurer approved by the employer.

⑥ If the construction tasks are not completed within the contract period due to the contractor's reasons, all costs incurred during the process, including rush work measures, shall be borne by the contractor, and the contractor shall bear the direct reasonable losses and related responsibilities caused to the employer.

⑦ Assist in handling the "Power Purchase and Sale Contract," "Grid Connection Dispatch Agreement," "Grid Connection Agreement," "Communication Agreement," "High Voltage Power Supply Contract," "Power Generation Business License" (if any), and be responsible for passing the power quality supervision to obtain the "Power Engineering Quality Supervision and Inspection Grid Connection Notice." Cooperate with Party A to provide the necessary documents and materials for grid connection within Party B's scope of work in a timely manner, allowing sufficient time for grid connection to ensure grid connection within the agreed period.

⑧ Provide necessary office conditions for the owner's project department and the supervision project department.

⑨ Other unspecified but necessary construction, services, procedures, and processes for the ESS power station to be energized, as well as coordination costs incurred during the period (excluding grid connection-related work).

⑩ The contractor must comply with the owner's project management. If the owner determines that the contractor has issues in progress, safety, quality, etc., the contractor must execute the owner's control instructions to advance the project.

(14) Work within the scope of this project but not reflected in the bill of quantities is also included in the contract price. The contractor has fully considered it in the comprehensive unit price of sub-items or other costs. The bill of quantities does not list this cost separately, and the total contract price also includes this cost. If changes occur due to the employer's design or on-site engineering, change or visa procedures must be followed.

(15) The employer will not organize on-site surveys for this project. The contractor shall organize the survey based on its own situation and be responsible for the survey results. Any additional costs and/or delays caused by the contractor's failure to foresee shall be borne by the contractor. The contractor shall be fully responsible for the quality, safety, schedule, fire protection, environmental protection, labor protection, occupational health, asset inventory, etc., and finally deliver a project that meets the technical requirements and performance of the power grid and the construction unit, with qualified quality.

For detailed requirements of the above tender scope, refer to the employer's requirements.

3. Bidder Qualification Requirements

3.1 General Qualification Conditions

3.1.1 The bidder shall be an independent legal entity legally registered within the People's Republic of China, capable of independently bearing civil liabilities and having the right to independently enter into contracts;

3.1.2 The bidder shall meet the following conditions in terms of finance and reputation:

(1) Not being ordered to suspend production, business, or enter bankruptcy proceedings, with normal production and operation and the ability to perform the contract (a commitment is required);

(2) No fraudulent winning of bids or serious breaches of contract in the past three years, and no major or above quality accidents or general or above safety accidents caused by its products, construction, or services as determined by relevant authorities (a commitment is required);

(3) Not being listed in the National Enterprise Credit Information Publicity System (.cn) by the market supervision and administration department as a seriously illegal and dishonest enterprise or a seriously illegal enterprise (a commitment and website query screenshot are required);

(4) Not being listed as a dishonest person subject to enforcement or a major tax violation subject on the Credit China website. Exceptions are made if removed from the list before the bid submission deadline. ("China Judgment Documents Online" (zxgk.court.gov.cn), "Credit China" website (.cn) (a commitment and website query screenshot are required);

(5) The bidder and its legal representative and authorized representative have no bribery crimes in the past three years (from January 1, 2022, to the bid submission deadline) as queried on the "China Judgment Documents Online" (http://wenshu.court.gov.cn) (a commitment and website query screenshot are required);

(6) Legal entities, other organizations, or individuals with a relationship with the bid inviter that may affect the fairness of the bidding shall not participate in the bidding; different units with the same person in charge or with controlling or management relationships shall not participate in the bidding for the same section or the same tender project without section division (a commitment is required).

3.2 Special Qualification Conditions

3.2.1 Enterprise Qualification Requirements: The bidder shall have the following qualifications and provide the qualification certificates.

3.2.1.1 ESS Integration Qualification Requirements:

(1) Performance Requirements: The bidder shall have a cumulative ESS integration performance of no less than 2GWh LFP battery ESS in China in recent years (from January 1, 2022, to the present, based on the contract signing date) (provide key pages of the contract: the contract should fully reflect the names of both parties, project name and signatures, equipment name, specification capacity, signing date, etc. At least one contract performance invoice shall be provided for each contract).

(2) The bidder must have R&D and manufacturing capabilities for at least one core component of the electrochemical ESS (battery cell, PCS, EMS) and provide corresponding proof documents (provide third-party certification certificates or test reports such as CNAS, CGC, or CQC to prove that the product is developed or manufactured by the bidder).

(3) The bidder shall have an ISO9001 quality management system certificate, and CNAS, CGC, or CQC certification reports, and provide relevant proof documents for the equipment used in this bid; the battery and module must have a type certification report issued by a nationally recognized authority that complies with GB/T 36276-2023.

3.2.1.2 Construction Qualification Requirements:

(1) The bidder shall have a power engineering construction general contracting level 2 or above qualification and a safety production license issued by the construction authority, and a power facility installation (repair, test) license (installation, test class 2 or above) issued by the energy authority, all of which shall be valid.

(2) The bidder shall have completed at least one 220KV or above booster station (or substation) project construction and installation performance, and at least one ESS construction and installation performance with a capacity of no less than 50MW/100MWh in recent years (from January 1, 2022, to the present, based on the contract signing date) (the bidder shall provide both construction contracts and completion acceptance reports (or project completion certificates) as proof. If the same contract performance includes both 220KV or above booster station (or substation) and ESS construction and installation contracting scope, it can meet the performance requirements).

3.2.2 Project Manager Requirements:

(1) The bidder shall provide the proposed project manager's valid first-class constructor (electromechanical engineering) registration certificate issued by the construction administrative department, and a valid "Safety Production Assessment Certificate" (Class B). The project manager must be a full-time employee of the unit, and a labor contract and at least 12 consecutive months (from January 2024 to the present) of social security proof materials shall be provided.

(2) The project manager shall have completed an ESS project with a capacity of no less than 50MW/100MWh or a 220kV or above booster station (or substation) project construction and installation as a project manager in recent years (from January 1, 2022, to the present, based on the contract signing date). Project contracts and completion reports (or commissioning certificates) scans, project manager appointment documents (or other proof materials) shall be provided, otherwise, the performance will be considered invalid.

(3) The proposed project manager for this project shall not serve as a project manager in other projects and a commitment shall be provided.

Note: The proposed project manager's ongoing construction projects: Refers to the period from the date the bid inviter signs the contract with the bidder of this tender project to the date of project completion acceptance (based on the contract and the written materials of the completion acceptance). If the project manager stated in the contract is the proposed project manager for this tender project, and no legal and regulatory procedures for project manager change have been followed during the process, and the project completion acceptance has not been completed before the bid submission deadline of this tender project, it is deemed that the project manager has ongoing construction projects.

3.3 This project accepts joint venture bidding. The joint venture unit shall be led by the construction unit, jointly with an ESS integration system manufacturing enterprise for joint venture bidding, and submit a joint venture agreement specifying the lead party and the work and responsibilities to be undertaken by each party, and commit that once the bid is won, all parties of the joint venture shall bear joint and several liabilities to the bid inviter. The joint venture members shall not exceed two, and the joint venture member units shall not participate in the bidding for the same project separately or form another joint venture.