Delivery and installation of a photovoltaic system with a capacity of approximately 150 kW at a production plant in Łódź, with specific technical requirements and conditions for participation.
CHANGE TO NOTICE no. 2026-54414-293896 (version published 2026-10-16). Deadline for submitting offers: 2026-10-26 23:59 -> 2026-10-28 23:59. Current notice content below; original notice — see the link.
Delivery and installation of a photovoltaic system with a capacity of approx. 150 kW Estimated value: PLN 829,500.00 1. Subject of the contract: Delivery and installation of a photovoltaic system with a capacity of approx. 150 kW at the production plant in Łódź 2. Detailed description of the subject of the contract: Minimum technical parameters of the installation:
Parameter description Requirements Photovoltaic Panels Technology Monocrystalline Module efficiency factor min. 21.0 % Power of a single panel min. 430 Wp Maximum reverse current load, Permissible back current/Surge protection 25A Certificates TUV or equivalent Required standards (or equivalent): IEC 61215, IEC 61730, UL 61730 (61730 Type 29 for IEC 61730 class C), optionally UL 61215 Max system voltage 1500 V Maximum power drop after first year of operation No greater than 1% Minimum front load resistance 5400 Pa Manufacturer's warranty min. 12 years Fire classification Class A (according to IEC 61730-2 / UL 790 standard or equivalent)
Inverters: approx. 150 kW (cascade arrangement allowed, e.g., 100 kW + 2x25 kW) – hybrid function required only for units directly cooperating with the energy storage. Type Transformerless Minimum Euro efficiency 98% Enclosure protection min. IP 65 Protection against reverse polarity required Maximum input voltage at least 1000V Min. MPPT voltage range (inverter with wider range possible) 200~800V Min. voltage range for full MPPT power 380~720V Number of phases 3
Network parameter monitoring Communication: Common monitoring system for all units: RS485/CAN and WLAN/Ethernet/WiFi Cooperation with smart energy consumption meter to obtain energy consumption curve. Number of MPP trackers: for inverter power ≥ 100 kW min. 8 Number of MPP trackers: for inverter power from 30 kW to < 100 kW min. 4 Number of MPP trackers: for inverter power < 30 kW min. 2 Number of strings per single MPP tracker (depending on unit inverter power) 1 or 2 Possibility of smooth power regulation supplied to the grid (Zero Export/Export Limiting function) implemented in cooperation with smart meter Substructure Aerodynamic design dedicated to flat roofs with low load capacity, ensuring total roof load not exceeding 35 kg/m² Ballast system (without roof layer penetration) or welded/glued system guaranteeing no sealing damage Mandatory use of protective and separating mats under the structure to prevent mechanical damage and chemical corrosion of the cladding Width of support rail: min. 35 mm Standards: Static strength certificate and declaration of performance according to PN-EN 1991 (wind and snow loads) or equivalent and PN-EN 1090-2 or equivalent Materials with high corrosion resistance aluminum, steel with Magnelis coating (or equivalent) or hot-dip galvanized Manufacturer warranty on mounting system min. 10 years Bidirectional smart meter Meter capable of determining load curve Communication with inverter RS485 Gross energy meter - enabling automatic and periodic data transmission to a common monitoring system collecting other data related to energy production and consumption. DC cables Flexibility class: according to EN 60228 (or equivalent) and IEC 60228 (or equivalent) or n*conductor cross-section min. class 5 or min. 4 x conductor diameter Halogen-free according to: EN 50267-2-1 (or equivalent) or EN 60684-2 (or equivalent) or EN 50525-1 (or equivalent) or EN 60754-1 (or equivalent) Low smoke emission and corrosive gases according to: EN 61034 (or equivalent), IEC 61034 (or equivalent) or EN 60754-2 (or equivalent), IEC 60754 (or equivalent) or DIN EN 50268-2 (or equivalent) Resistance to weather and UV radiation according to HD 605/A1 (or equivalent) or EN 50289-4-17 (A) (or equivalent) or EN50618 (or equivalent) or IEC 62930 (or equivalent) Resistance to acids and alkalis according to EN 60811-2-1 or another equivalent Flame retardancy according to VDE 0482-332-1-2 (or equivalent) and DIN EN 60332-1-2 (or equivalent) or IEC 60332-1 (or equivalent) or IEC 60754-2 (or equivalent) Ozone resistance according to EN 50396 (or equivalent) or EN 50618 (or equivalent) or IEC 62930 (or equivalent) Short-circuit temperature >200°C for 5 s Max. conductor temperature during cable operation +120°C for 20,000 hours Resistance to hydrolysis and ammonia required Declared cable durability min. 25 years. DC surge protection Protection chosen according to PN-EN 61643-31 (or equivalent) Monitoring system for the operation of each photovoltaic panel separately. Protection degree IP 68 Maximum output current 20 Adc Energy storage (min. 30kWh) Minimum nominal capacity [kWh] 30
Minimum continuous discharge power [kW] 15 Minimum operation period/Number of cycles 15 years or 6000 Depth of Discharge DoD [%] Min. 90% Cell type LFP (LiFePO4) or Na-Ion Equipped with fire suppression system and integrated cell heating system based on electric heating mats (for LFP) Dedicated input for generator (Gen-Port/SmartPort) or equivalent system allowing cooperation with generator Standards and certificates Safety IEC62619 / IEC62040 / IEC63056 (or equivalent) Transport UN38.3 (or equivalent) Operating temperature range (°C) Charging: 0 ~ + 40; Discharging: -20 ~ + 50 Manufacturer's warranty min. 10 years
When names of particular products, sources, trademarks, patents or specific origin are given in the description or requirements, they may be replaced by equivalent or better solutions with technical and performance parameters not worse than those given.
Where specific standards, approvals, technical specifications, and reference technical systems established by Polish and European standardization bodies occur in the contract subject, the Contracting Authority permits equivalent solutions.
The Contractor referring to solutions equivalent to those described by the Contracting Authority is obliged to demonstrate that the solutions offered meet the requirements set by the Contracting Authority by attaching catalog sheets, certificates, and manufacturer warranties for the proposed solutions to their offer.
The tenderer may familiarize themselves with the contract site and its surroundings; a site inspection day is set for 14.10.2026 at 10:00. Participation in the site inspection is not mandatory. The Contracting Authority does not require a site visit before submitting an offer.
During the site inspection, the Contracting Authority will require signatures on the attendance list. The cost of inspecting the construction site is borne by the tenderer. Entry to the roof during the site inspection is possible only for persons who have a current medical certificate of no contraindications for work at heights above 3 meters. Conditions for roof inspection participation include submission of a written statement confirming possession of: 1. Valid medical examinations (height work). 2. Health and safety training for working at heights. 3. Appropriate personal protective equipment (e.g., shoes with proper grip, helmet, and, if necessary, safety harness). The Contracting Authority reserves the right to verify documents confirming these qualifications before allowing entry to the roof.
Due to the applicable character limit, the complete description of the contract subject has been included as an attachment to the notice titled "REQUEST FOR QUOTATION NO. 21/06/2026/FENG/P3" Category: Delivery / Other deliveries CPV: 09330000-1 Solar energy, 09331200-0 Photovoltaic solar modules, 09332000-5 Solar installations, 45261215-4 Roofing with solar cell panels, 45300000-0 Installation works in buildings Place of execution: Łódź, Łódź-Górna commune, Łódź Voivodeship Offer evaluation criteria: - A n = (C min / C r) x 70 C min – minimum price in the set C r – price of the evaluated offer A n – number of points awarded to the offer - Photovoltaic panels with anti-reflective coating and module efficiency score: a) 21.00% - 21.99% - 0 pts. b) 22.00% - 22.99% - 4 pts. c) 23.00% - 23.99% - 7 pts. d) 24.00% and higher - 10 pts. - Warranty period in years Points
12 0 13 6 14 10 15 15 16 and above 20
Participation conditions: - Authorization to perform certain activity or actions: • Possession of authorizations to perform specific activities if required by law - Knowledge and experience: • Possession of necessary knowledge and experience regarding contract subject or subcontractors having such knowledge and experience. Required knowledge and experience must be confirmed by a list of properly completed photovoltaic installation assembly works of at least 140kWp on a roof including telemechanics automation and grid connection. The offer must include documents confirming proper execution such as copies of references or acceptance protocols. At least one properly executed work is required. - Persons capable of performing the contract: • Having persons able to perform the contract or subcontractors with such persons. Installation must be performed by at least 2 installers, at least one with a Technical Inspection Office certificate confirming qualification to install photovoltaic systems. Connection in the Main Distribution Board may only be performed by a person with valid G1 (so-called “SEP”) qualification certificates for scope “E” and “D”. Each person must have at least one year experience. Equivalent qualifications from earlier laws are accepted. Roof installation may only be done by persons with valid medical examinations permitting work at height and appropriate health and safety training. - Economic and financial situation: • Being in an economic and financial situation ensuring contract execution within deadlines - Technical potential: • Having appropriate technical potential or subcontractors with such potential - Additional participation conditions: • No grounds for exclusion (as defined in the request for quotation exclusion criteria) • Submission of bid bond as per section 6 Bid Bond requirements • Submission of list of subcontracted parts of contract with names (companies) and addresses of subcontractors - if applicable • Technical specification confirming meeting minimum technical parameters per Annex No. 2 to the request for quotation • Catalog sheets, certificates, approvals of proposed solutions confirming fulfillment of minimum technical parameters as in contract description
6. Bid Bond requirements 1. Bid bond must be provided before the offer submission deadline. 2. The Contractor is required to provide bid bond of PLN 10,000.00 (in words: ten thousand zloty 00/100) 3. Bid bond may be provided in one or several of the following forms: a) in cash, b) in other forms: guarantees provided by entities specified in art. 6b para. 5 pt. 2 of the Act of 9 November 2000 on establishing the Polish Agency for Enterprise Development (Journal of Laws 2020 item 299), bank guarantees or insurance guarantees. 4. The date of bid bond payment in the case of a cash form is the date of crediting the Contracting Authority's bank account; the bid bond is considered properly provided on the date and time the amount is credited, not on the transfer date performed by the Contractor. The bond must be credited before the offer submission deadline, otherwise the bond is considered not provided. 5. If the bid bond is provided in the form specified in pt. 3b), it must be valid for at least 30 days from the offer submission deadline. 6. The guarantee/guarantor's document must contain an unconditional commitment to pay the entire bid bond amount to the Contracting Authority upon any written demand within the offer binding period. 7. Methods of providing bid bond: a) in cash – via transfer to bank account: 05114010650000465797001001 (mBank) with title: "BID BOND REQUEST FOR QUOTATION NO. 21/06/2026/FENG/P2" b) if the bid bond is provided in the form referred in pt. 3b), the Contractor must: - submit a copy certified as conforming to the original by the Contractor of the bonding document as proof of bid bond submission, attached to the offer, - send or deliver the original document in a separate sealed envelope marked "BID BOND REQUEST FOR QUOTATION NO. 21/06/2026/FENG/P2" to the correspondence address of the Contracting Authority: ul. Równa 2, 80-067 Gdańsk 8. The Contractor whose offer has been selected forfeits the bid bond to the Ordering Party in the event that: a) they refuse to sign the contract for the order under the conditions specified in the offer, b) it becomes impossible to conclude the contract for the order due to reasons attributable to the Contractor. 9. The Ordering Party shall immediately return the bid bond: a) to all Contractors immediately after selecting the most advantageous offer or canceling the procedure, except for the Contractor whose offer was selected as the most advantageous, subject to paragraph 8 above, b) to the Contractor whose offer was selected as the most advantageous, the Ordering Party returns the bid bond immediately after signing the conditional contract for the order. 10. The Ordering Party immediately returns the bid bond upon the request of the Contractor who withdrew the offer before the deadline for submitting offers. 11. If the bid bond was paid in cash, the Ordering Party returns it to the bank account indicated by the Contractor. - List of required documents/declarations: The Ordering Party requires submission of the following documents to confirm compliance with the above conditions: • Submission of the offer on the offer form (Annex No. 1), containing: o Contractor's name, address, email, and tax identification number (NIP) o Date of offer issuance o Data allowing evaluation of the offer and awarding points under the criteria o Offer validity period
• A declaration that the Contractor knows and accepts the terms of order execution specified in the request for proposals and raises no objections or comments in this regard. • A declaration that the Contractor holds authorization to perform specific activities or tasks if required by law. • A declaration that the Contractor has appropriate technical potential or will provide subcontractors with appropriate technical potential to execute the order. • A declaration that the Contractor is in an economic and financial situation ensuring the execution of the order within the specified deadlines. • A declaration that the installation assembly on building roofs will be carried out only by persons with valid medical examinations, height work permits, and occupational health and safety training. • A declaration that the installation assembly will be carried out by persons with at least one year of experience in photovoltaic installation assembly. • A declaration that the Contractor: o is not subject to exclusion from the procedure based on Article 5k of Council Regulation (EU) No 833/2014 of July 31, 2014, on restrictive measures related to actions destabilizing the situation in Ukraine by Russia (Official Journal EU L 229, 31.7.2014, p. 1; hereinafter: Regulation 833/2014), as amended by Council Regulation (EU) 2025/2033 amending Regulation (EU) No 833/2014 on restrictive measures related to actions destabilizing Ukraine (OJ L, 2025/2033, 23.10.2025, p. 1; hereinafter: Regulation 2025/2033); o no grounds exist for exclusion based on Article 7 paragraph 1 of the Act of April 13, 2022, on special solutions preventing support for aggression in Ukraine and protecting national security (Journal of Laws 2025.514 consolidated text); • A declaration that the Contractor is not personally or financially related to the Ordering Party. Personal or financial relations mean mutual connections between the Ordering Party or persons authorized to incur obligations on behalf of the Ordering Party or persons performing activities related to preparing and conducting the selection procedure for the Contractor and the Contractor, including in particular: participation in a company as a partner of a civil law partnership or personal company, holding at least 10% shares or stock (unless a lower threshold results from law), serving as a member of supervisory or management body, proxy, attorney-in-fact, being in a marital relationship, direct line kinship or affinity, second-degree collateral kinship or affinity, or related by adoption, custody, or guardianship, or cohabiting with the Contractor, its legal representative, or members of governing or supervisory bodies of contractors seeking the contract, being in a legal or factual relationship with the contractor undermining justified doubts as to their impartiality or independence in the procurement procedure. • Confirmation of payment of the bid bond in accordance with point 6. Requirements regarding the bid bond • Power of attorney – if applicable. • A list of parts of the order that the Contractor intends to subcontract, including the names (firms) and addresses of subcontractors in the offer – if applicable. • A list of properly completed photovoltaic installation assembly works with a capacity of at least 140 kWp on a roof, including telemechanics automation and connection to the power grid with documents confirming correct completion, e.g., copy of references or acceptance protocol. • A list of persons capable of executing the order, holding certificates from the Technical Inspection Office confirming qualifications for photovoltaic system installation and/or holding valid, appropriate certificates G1 in sections "E" and "D" – with documentation confirming required qualifications. Equivalent authorizations issued under earlier legal regulations are accepted. • Technical specification confirming the fulfillment of minimum technical parameters – according to Annex No. 2 to the request for proposals. • Catalog sheets, certificates, approvals of the proposed solutions, confirming compliance with the minimum technical parameters specified in the description of the subject orders