Delivery and installation of a photovoltaic system with a capacity of approximately 150 kW at a manufacturing plant in Łódź, requiring compliance with specific technical parameters and standards.
Delivery and installation of a photovoltaic system with a capacity of approx. 150 kW Estimated value: 829,500.00 PLN 1. Subject of the contract: Delivery and installation of a photovoltaic system with a capacity of approx. 150 kW at the Manufacturing 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 coefficient min. 21.0 % Power of a single panel min. 430 Wp Max reverse current load, Permissible reverse 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 degradation after the first year of operation Not greater than 1% Minimum front side load resistance 5400 Pa Manufacturer's warranty min. 12 years Fire classification Class A (according to IEC 61730-2 / UL 790 or equivalent)
Inverters: approx. 150 kW (allowable cascading layout, e.g., 100 kW + 2x25 kW) – hybrid function required only for units directly cooperating with energy storage. Type Transformerless Minimum European efficiency 98% Minimum enclosure protection IP 65 Reverse polarity protection required Maximum input voltage at least 1000V Min. MPPT voltage range (possible use of an inverter with a wider applicable range) 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 Compatibility with smart energy consumption meter enabling obtaining the energy consumption curve. Number of MPP trackers: for inverters with power ≥ 100 kW min. 8 Number of MPP trackers: for inverters with power from 30 kW to < 100 kW min. 4 Number of MPP trackers: for inverters with power < 30 kW min. 2 Number of strings per single tracker (depending on inverter unit power) 1 or 2 Smooth regulation capability of power fed into the grid (Zero Export/Export Limiting function) implemented in cooperation with the smart meter Supporting structure Aerodynamic design dedicated for flat roofs with low load capacity, ensuring a total roof load not exceeding 35 kg/m² Ballasted system (without roof layer penetration) or welded/glued system, ensuring no damage to the roof tightness Mandatory use of protective and separation mats under the structure preventing mechanical damage and chemical corrosion of the roofing Width of the load-bearing rail: min. 35 mm Standards: Static strength certificate and declaration of performance according to PN-EN 1991 (effects of wind and snow) or equivalent and PN-EN 1090-2 or equivalent High corrosion resistance material aluminum, steel with Magnelis coating (or equivalent) or hot-dip galvanized Manufacturer's warranty on the mounting system min. 10 years Intelligent bidirectional meter Meter allowing to establish the load curve Communication with inverter RS485 Gross energy meter - enabling automatic and periodic data sending to the common monitoring system collecting other data related to production and energy 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 cable 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 emission of smoke 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 conditions 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 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 20,000h Resistance to hydrolysis and ammonia required Declared cable durability min. 25 years. DC surge protection Protection selected according to standard PN-EN 61643-31 (or equivalent) Monitoring system for each individual photovoltaic panel. Degree of protection IP 68 Maximum output current 20 Adc Energy storage (min. 30kWh) Minimum nominal capacity [kWh] 30
Minimum continuous discharge power [kW] 15 Minimum service life / Number of cycles 15 years or 6000 Depth of Discharge DoD [%] Min. 90% Cell type LFP (LiFePO4) or Na-Ion Equipped with a 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 a 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
In cases where the description or requirements specify the use of products with certain brand names, trademarks, patents or specific origin, they may be replaced by equivalent or better solutions with technical and operational parameters no worse than those specified.
Where the order includes certain standards, approvals, technical specifications and technical reference systems established by Polish and European standardization bodies, the Ordering Party allows equivalent solutions described.
Contractors referring to solutions equivalent to those described by the Ordering Party must demonstrate that the solutions offered meet the requirements specified by the Ordering Party by attaching catalogs, certificates, manufacturer warranties for the proposed solutions to their offer.
It is allowed for the bidder to familiarize themselves with the place of contract execution and its surroundings; for this purpose, a site visit day is scheduled for 14.10.2026 at 10:00. Participation in the site visit is not mandatory. The Ordering Party does not require a site visit before submitting an offer.
During the site visit, the Ordering Party will require signing the attendance list. The cost of inspecting the construction site shall be borne by the bidder. During the site visit, access to the roof of the building is envisaged. Entry to the roof for the site visit is permitted only for persons holding a valid medical certificate confirming no contraindications for working at height above 3 meters. Conditions for roof inspection participation require a written declaration confirming possession of: 1. Valid medical examinations (height work). 2. Occupational health and safety training for work at height. 3. Appropriate personal protective equipment (e.g., footwear with adequate grip, helmet, and if necessary safety harness). The Ordering Party reserves the right to verify documents confirming the above entitlements before allowing entry to the roof.
Due to the applicable character limit, the complete description of the subject of the contract is attached to the announcement titled "REQUEST FOR QUOTATION NO. 21/06/2026/FENG/P3" Category: Delivery / Other deliveries CPV: 09330000-1 Solar energy, 09331200-0 Solar photovoltaic modules, 09332000-5 Solar installations, 45261215-4 Roofing with solar panels, 45300000-0 Building installation works Place of execution: Łódź, Łódź-Górna municipality, 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 – points awarded to the offer - Photovoltaic panels with anti-reflective coating with module efficiency equal / scoring: a) 21.00 % - 21.99 % - 0 pts. b) 22.00 % - 22.99 % - 4 pts. c) 23.00 % - 23.99 % - 7 pts. d) 24.00 % or higher - 10 pts. - Warranty period in years Points
12 0 13 6 14 10 15 15 16 and more 20
Participation conditions: - Authorization to perform a specific activity or task: • Possession of authorizations to perform a specific activity or task if legally required - Knowledge and experience: • Possession of necessary knowledge and experience related to the subject of the contract or provision of subcontractors having the necessary knowledge and experience concerning the subject of the contract1. Required knowledge and experience must be confirmed by 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 of the installation to the power grid. The offer must include documents confirming proper completion of works, e.g. copies of references or acceptance protocols. At least one properly executed work must be demonstrated. - Persons capable of performing the contract: • Availability of persons capable of performing the contract or provision of subcontractors with such persons. The installation must be carried out by at least two individuals – installers, of whom at least one holds a certificate from the Office of Technical Inspection confirming qualifications to install photovoltaic systems. Connection in the Main Distribution Board may only be performed by a person holding a valid relevant G1 qualification certificate (so-called "SEP qualifications") in scopes "E" and "D". Each must have at least one year of experience. Qualifications equivalent to the above and issued under previous legal regulations are allowed. Installation on building roofs may only be carried out by persons holding valid medical certificates allowing work at height and having completed OHS training. - Economic and financial situation: • Being in a financial and economic situation ensuring order execution within deadlines - Technical capacity: • Availability of suitable technical capacity or provision of subcontractors with suitable technical capacity to execute the contract - Additional participation conditions: • No grounds for exclusion (according to the exclusion criteria specified in the inquiry) • Submission of a bid bond in accordance with the description in point 6 Bid Bond Requirements • Submission of a list of parts of the contract the Contractor intends to subcontract, with names (companies) and addresses of subcontractors – if applicable • Technical specification confirming compliance with minimum technical parameters – according to annex no. 2 to the inquiry. • Catalogues, certificates, approvals of proposed solutions confirming compliance with minimum technical parameters specified in the subject description
6. Bid Bond Requirements 1. The bid bond must be submitted before the deadline for submission of bids. 2. The Contractor is obliged to submit a bid bond in the amount of 10,000.00 (in words: ten thousand zlotys 00/100) 3. The bid bond may be submitted in one or more of the following forms: a) money, b) other forms: guarantees issued by entities referred to in art. 6b para. 5 point 2 of the Act of 9 November 2000 on the establishment of the Polish Agency for Enterprise Development (Journal of Laws 2020 item 299), bank guarantees, or insurance guarantees. 4. The date of payment in the case of monetary form is the date on which the Ordering Party’s bank account is credited. It must be remembered that the bid bond is deemed properly submitted on the date and time when the account is credited, not on the date/time of the transfer by the Contractor. The bid bond must be credited to the Ordering Party’s account before the deadline for bid submission; if the amount is not credited by that deadline, the bid bond is considered not submitted. 5. If the bid bond is submitted in the form referred to in point 3b), it must be valid for at least 30 days counting from the bid submission deadline. 6. The guarantee surety must contain an unconditional obligation of the Guarantor to pay the full amount of the bid bond to the Ordering Party on each written demand submitted within the bid validity period. 7. Methods of submitting the bid bond: a) in money – by bank transfer to account: 05114010650000465797001001 (mBank) with the title: “BID BOND REQUEST FOR QUOTATION NO. 21/06/2026/FENG/P2” b) If the Contractor submits the bid bond in the form referred to in point 3b), they must: - attach a copy of the document certified by the Contractor as compliant with the original, as proof of bid bond submission, to the offer, - send the original document in a separate sealed envelope labeled “BID BOND REQUEST FOR QUOTATION NO. 21/06/2026/FENG/P2” to the Ordering Party’s correspondence address: ul. Równa 2, 80-067 Gdańsk 8. The Contractor whose offer is selected will forfeit 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) the conclusion of the contract for the order becomes impossible for reasons attributable to the Contractor. 9. The Ordering Party shall promptly refund the bid bond: a) to all Contractors immediately after selecting the most favorable offer or cancelling the procedure, except for the Contractor whose offer was selected as the most favorable, subject to paragraph 8 above, b) to the Contractor whose offer was selected as the most favorable, the Ordering Party shall refund the bid bond immediately after concluding the conditional contract for the order. 10. The Ordering Party shall refund the bid bond immediately upon request of the Contractor who withdrew the offer before the deadline for submission of offers. 11. If the bid bond was posted in cash, the Ordering Party shall refund it to the bank account indicated by the Contractor. - List of required documents/declarations: In order to confirm compliance with the above conditions, the Ordering Party requires submission of the following documents: • Submission of the offer on the offer form (Annex No. 1), containing: o the name, address, email, and tax identification number (NIP) of the Contractor o the date of the offer issuance o data allowing the evaluation of the offer and awarding points according to the criteria o offer validity period
• Declaration that the Contractor knows and accepts the conditions for order execution specified in the request for quotation and raises no objections or comments in this regard. • Declaration that the Contractor holds the required authorizations to perform the specified activity or operation if the law requires such authorizations. • Declaration that the Contractor has appropriate technical potential or will provide subcontractors with appropriate technical potential to execute the order. • Declaration that the Contractor is in an economic and financial situation ensuring execution of the order within the specified deadlines. • Declaration that installation assembly on building roofs will only be carried out by persons holding valid medical examinations, height-work permits, and occupational health and safety training. • Declaration that the installation assembly will be performed by persons with at least one year of experience in installing photovoltaic installations. • Declaration that the Contractor: o is not subject to exclusion from the procedure under Article 5k of Council Regulation (EU) No 833/2014 of 31 July 2014 concerning restrictive measures related to actions destabilizing the situation in Ukraine by Russia (Official Journal of the EU No L 229, 31.7.2014, p. 1; hereinafter: Regulation 833/2014), as amended by Council Regulation (EU) 2025/2033 regarding the amendment of Regulation (EU) No 833/2014 concerning restrictive measures related to actions destabilizing the situation in Ukraine by Russia (OJ L, 2025/2033, 23.10.2025, p. 1; hereinafter: Regulation 2025/2033); o there are no grounds for exclusion from the procedure under Article 7(1) of the Act of 13 April 2022 on special solutions for preventing support of aggression against Ukraine and for protecting national security (Journal of Laws 2025, item 514, consolidated text); • Declarations that the Contractor is not personally or financially related to the Ordering Party. Personal or financial relation means mutual connections between the Ordering Party or persons authorized to incur obligations on its behalf or performing activities related to preparation and conduct of the Contractor selection procedure on behalf of the Ordering Party and the Contractor, especially: participating in a civil partnership or a personal company as a partner, holding at least 10% of shares or stocks (unless a lower threshold results from law), holding functions of a member of supervisory or managerial bodies, proxy, attorney-in-fact, being in a marital relationship, kinship or affinity in the direct line, kinship or affinity in the collateral line up to the second degree, or connected by adoption, care or guardianship, or living in a common household with the contractor, their legal substitute, or members of managing or supervisory bodies of contractors applying for the order, having such legal or factual relation with the contractor that raises justified doubts as to their impartiality or independence in relation to the order procedure. • Confirmation of bid bond payment in accordance with point 6. Requirements regarding the bid bond • Power of attorney – if applicable. • List of parts of the order intended to be subcontracted along with the names (companies) and addresses of subcontractors indicated in the offer – if applicable. • List of correctly completed installation works of photovoltaic systems with a minimum power of 140kWp on roofs, including telemechanics automation and grid connection, along with documents confirming proper completion of works, e.g. copy of references or copy of the order acceptance protocol. • List of persons capable of executing the order, holding certificates from the Office of Technical Inspection confirming qualifications to install photovoltaic systems and/or holding valid qualification certificates G1 in the scope "E" and "D" appropriate for the performed works – along with documentation confirming possession of required qualifications. Equivalent authorizations based on previously applicable legal provisions are accepted. • Technical specification confirming compliance with the minimum technical parameters – according to Annex No. 2 to the request for quotation. • Data sheets, certificates, approvals of the proposed solutions, confirming compliance with the minimum technical parameters indicated in the description of the subject orders