Supply and installation of a photovoltaic system with energy storage and an energy management system, including design, documentation, and compliance with grid connection requirements.
Supply and installation of a PV system with an electric energy storage. A complete and binding description of the subject of the contract, including detailed technical and functional requirements, can be found in point 2 "Description of the subject of the contract" of the Request for Proposal no. 2/PV/2026 and in the documents referenced therein. Below is a summary of the subject of the contract.
The subject of the contract is the comprehensive implementation of a photovoltaic installation with an installed power not exceeding 150 kWp together with an electric energy storage with a capacity of at least 430 kWh and a minimum system output power of 150 kW, as well as an Energy Management System (EMS). The scope of the contract particularly includes the preparation of the necessary design and executive documentation, delivery of all devices, materials and equipment, installation, electrical connections and protection systems, integration and configuration of systems, required approvals and activities related to grid connection, commissioning, measurements, tests and trials, and delivery of a complete and properly functioning system for operation. PHOTOVOLTAIC INSTALLATION The photovoltaic installation with an installed power not exceeding 150 kWp will be installed on the roof of the Ordering Party's production hall and connected to the facility's electrical power installation. The PV generator power should be as close as possible to 150 kWp but must not exceed this value. The base configuration from the project documentation assumes the use of 300 photovoltaic modules with a unit power of 500 Wp. Modules with higher unit power are allowed with a proportional reduction of their number, provided all minimum TOR parameters are maintained and the total PV generator power is as close as possible to 150 kWp without exceeding that limit. The unit power of the module must be at least 500 Wp. Required are monocrystalline modules made with Half-Cut Cells technology, with a fill factor (FF) of at least 77.0% and an efficiency not less than 20.5%. The inverter base configuration is 2 × 75 kW. Equivalent device configurations with a total nominal AC power of 150 kW are allowed, provided all other TOR requirements are met. The inverter(s) conversion efficiency must be at least 98.5%. Integrated online monitoring and required DC and AC side protections are mandatory. The PV installation must be mounted on a mounting structure intended for installation on a roof covered with a roofing membrane, glued to the membrane system without using a ballast system. The mounting system must be approved by the manufacturer for the given roof covering. Before installation, the Contractor is obliged to confirm the applicability of the chosen system on the existing roof based on a technical assessment of the structure and roofing. ELECTRIC ENERGY STORAGE The contract includes delivery, installation, configuration, and commissioning of an electric energy storage system with a capacity of at least 430 kWh and a minimum system output power of 150 kW, made in lithium-ion LiFePO4 technology and designed to work with the planned photovoltaic system and the facility's electrical installation. The storage may be a single unit or a set of cooperating units/modules, provided the complete system meets all minimum TOR parameters. The cyclic durability must be at least 6,000 full cycles maintaining at least 80% capacity, and the storage efficiency at least 94%. A modular system in an external container with a minimum 10-year warranty on storage capacity is required. The energy storage system must have a BMS ensuring real-time battery monitoring and protection at least against overcharge, overheating, short circuit, and deep discharge. Remote access to operational parameters via an application or software accessible from a computer or mobile device is required. ENERGY MANAGEMENT SYSTEM (EMS) The contract covers delivery, installation, configuration, parameterization, and commissioning of a complete EMS, cooperating with the photovoltaic installation, energy storage, BMS, power converter(s) (PCS), and the facility's electrical installation. The EMS must automatically manage the energy storage operation and power flows between the PV installation, energy storage, facility electrical consumption, and the electrical grid. It must enable maximizing PV self-consumption, controlling the charging and discharging of the storage, managing PV energy surplus, peak shaving, limiting the risk of exceeding the established power draw from the grid, scheduling storage operation, cost optimization, and cooperation with the grid operator's energy export limitation system. EMS must provide continuous monitoring of basic operating parameters, data logging and archiving, access to historical data, data export, diagnostics and alarm signaling, and remote access for authorized users. Loss of internet connection, cloud service, or other external IT system must not cause loss of functions essential for safe operation. All licenses, subscriptions, cloud service fees, and other costs required for the mandatory EMS functionalities specified in the TOR must be included in the offer price for at least 3 years from the final acceptance date. CONTROL, PROTECTION, AND ENERGY EXPORT LIMITATION SYSTEM The photovoltaic installation with energy storage must be equipped with a complete measurement, regulation, control, and protection system ensuring proper cooperation between the PV installation, energy storage, and the facility's electrical installation. According to connection conditions, the installation must operate to prevent feeding electricity generated by the photovoltaic installation back to the grid operator's network. The system must automatically limit the PV generation power when the energy cannot be used by the Ordering Party's receivers or accepted by the energy storage. The execution of the contract must comply with the connection conditions to the Energa-Operator S.A. grid no. P/26/059090 dated 11.09.2026, which constitute Annex 4 to the Request for Proposal. The Contractor is obliged to include in the scope all devices, works, documentation, configuration, approvals, measurements, and activities on the side of the Connected Entity necessary for the contract performance according to the connection conditions. OTHER SCOPE OF WORK The contract scope also includes: - performing necessary technical inventory of the installation site, - preparing required design and executive documentation, - verifying technical conditions for PV installation mounting on the roof and proper selection of structure, - designing module layout, electrical configuration of the installation, inverters, energy storage, cable routes, protections, measuring and control systems, - obtaining fire protection approval for the PV installation project, - preparing documentation and performing activities required by the grid operator related to connection and commissioning of the PV installation and energy storage, - complete DC and AC cabling and required connections with the facility's electrical installation, - implementing required protections, measuring and control systems, - conducting required electrical measurements, tests, and functional trials, - commissioning the PV installation, energy storage, and EMS and verifying proper cooperation of all system components, - training persons indicated by the Ordering Party, - delivering complete as-built documentation, measurement and test results, user manuals, datasheets, compliance documents, and warranty certificates. The subject of the contract must be designed, executed, and configured considering accessibility and universal design requirements specified in the Request for Proposal. All supplied devices and components must be brand new, complete, free of defects, and have legally required documents permitting their use. Detailed requirements for technical parameters of the PV installation and energy storage, EMS functionality, energy export limitation system, execution method, documentation, configuration, tests, and acceptance are specified in point 2 "Description of the subject of the contract" of Request for Proposal no. 2/PV/2026 and in referenced documents. The contract must be completed within no more than 100 calendar days from the contract signing date. The completion date is considered the day the Ordering Party is notified of readiness for final acceptance of the complete subject, after finishing all works, commissioning installations and equipment, conducting required measurements, and delivering documentation necessary for acceptance. Category: Supply / Other supplies CPV codes: 09331200-0 Solar photovoltaic modules, 31430000-9 Electric accumulators, 45310000-3 Electrical installation work, 48151000-1 Computer control system, 51112000-0 Installation services of control and electrical transmission equipment, 71320000-7 Engineering design services, 72265000-0 Software configuration services Place of implementation: Krotoszyn, Krotoszyn County, Wielkopolskie Voivodeship Warranty period: - 5 years warranty on installation of PV system - minimum 15 years product warranty on PV modules - minimum 25 years warranty on linear power degradation of modules - minimum 10 years warranty on energy storage capacity Bid evaluation criteria: - Price 70% (70 points) - lowest net price. Points awarding method: Offer with the lowest price receives: 70 points. Points formula: Criterion - Net Price (C) = (Lowest net price / Net price of evaluated offer) x 70 points. - Environmental execution method 5% (5 points). Points awarding method described in RFP point 11 "Supplier selection criteria and weight information:" - Criterion 2 - Completion time 10% (10 points). Scoring: Bidder declaring the shortest contract completion time receives: 10 points. Points formula: Criterion - Completion Time (T) = (Shortest completion time (days) / Time in evaluated offer) x 10 points. - Fill factor FF value 15% (15 points). Points awarding method: Bidder declaring the highest FF value receives: 15 points. Points formula: Criterion – Fill factor FF = [(FF of evaluated bid – 77) / (Highest FF – 77)] × 15 points.
Participation conditions: - Knowledge and experience: The bidder must meet the following participation conditions: - Experience: Condition is met if the Contractor shows that in the last 3 years before the bid submission deadline, or shorter period if business activity is shorter, they have properly completed at least two projects matching the contract scope, namely: - at least two deliveries, installations and commissioning of photovoltaic systems with a power of at least 100 kW; - at least two deliveries, installations and commissioning of energy storage systems with a capacity of at least 200 kWh; - at least two implementations of an Energy Management System (EMS) including integration of EMS with PV installation and energy storage, with each implementation including at least energy storage operation control and energy flow management between PV installation, storage, and facility consumption.
To confirm meeting these conditions, a statement in the offer form and attachment no. 2 to the RFP must be submitted. Before awarding the contract, the Ordering Party may request documents confirming proper execution of the indicated projects, such as references, acceptance protocols, or equivalent documents. Regarding the EMS implementation condition, the Contractor must submit a list of implemented systems with the offer, using a template attached as Annex 2, including at least: project name and location, client, PV power and storage capacity, scope of EMS functions implemented, system commissioning date, and contact details of the entity confirming implementation. Evidence confirming proper implementation, like references, acceptance protocols or equivalents, must be attached. Anonymization of business secrets is allowed except essential data for condition verification. Implementations used to confirm EMS condition may coincide with implementations used for other conditions if they included EMS implementation with required functionality. If the list or evidence is missing or documents do not confirm conditions, the Ordering Party will request their supplementation within a specified deadline. - Additional participation conditions: 1. The Ordering Party requires a bid bond in the amount of 15,000 PLN (in words: fifteen thousand zlotys). 2. This procedure is conducted in accordance with the principle of competitiveness and is not subject to the provisions of the Act of September 11, 2019 – Public Procurement Law. 3. The bid bond must be paid before the deadline for submission of bids. In the case of a bid bond paid in cash, the date and time of crediting the Contracting Authority's bank account shall be considered the date of payment. 4. The bid bond may be provided, at the Contractor's choice, in one or more of the following forms: a) in cash – by transfer to the Contracting Authority's bank account number 44 1020 4900 0000 8802 3925 1813, with the note: "Bid Bond – inquiry 2/PV/2026"; b) in the form of a bank guarantee; c) in the form of an insurance guarantee; d) in the form of a surety granted by entities referred to in Article 6b(5)(2) of the Act of November 9, 2000 on the establishment of the Polish Agency for Enterprise Development. 5. The bid bond provided in the form of a guarantee or surety must be irrevocable, unconditional, payable upon the first written demand of the Contracting Authority, cover all cases of withholding the bid bond indicated in section 8, and remain valid throughout the bid binding period. The original document in electronic form, signed by persons authorized to represent the guarantor or surety, must be submitted with the bid via the Competitiveness Database. 6. A bid that has not been secured by a bid bond paid in the required amount, form, and deadline shall be rejected. 7. The Contracting Authority shall return the bid bond promptly, but not later than within 7 days from the occurrence of one of the following circumstances: a) expiration of the bid binding period; b) conclusion of the contract for the order; c) cancellation of the procedure, except in cases where an appeal or other dispute procedure concerning this procedure has not been resolved; d) selection of the most advantageous offer – with regard to Contractors whose bids were not selected; e) rejection of the Contractor's bid or its exclusion from the procedure; f) withdrawal of the bid by the Contractor before the deadline for submission – at his request. 8. The Contracting Authority shall retain the bid bond if: a) the Contractor, in response to the Contracting Authority’s request, for reasons attributable to him, did not submit required documents, statements, or explanations, which made it impossible to select his bid as the most advantageous; b) the Contractor whose bid was selected refused to conclude the contract on the terms specified in the bid; c) conclusion of the contract became impossible for reasons attributable to the Contractor whose bid was selected. 9. The bid bond paid in cash shall be returned by the Contracting Authority to the bank account indicated by the Contractor, together with interest resulting from the bank account agreement on which it was held, less charges for account maintenance and bank commission for the transfer.