Photovoltaikanlage Grundschule Auf dem Hagen

The contract timeline includes the following explicitly stated dates and phases:

• Start of Execution (Ausführungsbeginn): In calendar week 2 of 2027, at the latest by the last working day of that week.
• Completion of Execution (Vollendung der Leistung): In calendar week 26 of 2027, at the latest by the last working day of that week.

These dates are identified as binding contract deadlines ("Verbindliche Fristen (=Vertragsfristen)").

The total duration can be inferred from these dates. The 2nd calendar week of 2027 to the 26th calendar week of 2027 spans approximately 24 weeks.

Other relevant dates mentioned, but not part of the contract's execution timeline, include:

• Tender Submission Deadline (Ablauf der Angebotsfrist): November 5, 2026, at 09:00 AM.
• Binding Period End Date (Ablauf der Bindefrist): December 14, 2026.

The core scope of work for this tender involves the turnkey construction of a grid-connected photovoltaic (PV) system on the roof of the "Grundschule Auf dem Hagen" in Empelde.

The high-level summary of the Statement of Work and core deliverables includes:

• Project Objective: To establish self-sufficiency for the school in PV electricity, feed excess energy into the public grid, and comply with all legal, technical, and official requirements.
• System Specifications: The PV system will have an overall capacity of approximately 99.88 kWp, consisting of 277 modules (143 for the school, 84 for the sports hall/green roof). It will utilize 3 inverters mounted under a weather protection roof, and no battery storage is planned. The mounting system will be rail mounting with ballast, allowing for an elevation of up to 1 meter, with mandatory lift-off and tilt protection.
• Integration: The system must include integration into the existing lightning protection system, including potential equalization, and implement overvoltage and lightning protection arresters after the building entry.
• Compliance: The project requires adherence to the VDE application rule VDE-AR-N 4105 for systems between 30 kVA and 100 kVA, including active power reduction during overfrequency and reactive power provision. It also requires simplified feed-in management as per EEG 2012 and testing of PV systems according to VDE 0100-600 and VDE 0100-712.
• Documentation and Handover: Key deliverables include the preparation of all assembly and workshop drawings, submission of assembly plans, and comprehensive "Revisionsunterlagen" (revision documents) upon acceptance. These revision documents encompass plans, schematics, and measurement protocols in triplicate.
• Commissioning and Training: The project includes the commissioning of the fully installed PV system in conjunction with a manufacturer's representative, along with detailed instruction for the operating personnel by both the bidder/contractor and the manufacturer.
• Network Documentation: The contractor is responsible for documenting the network, including labeling of all cables, distributors, patch panels, and connection boxes, providing a graphical representation of the cabling system, and supplying measurement protocols and wiring diagrams. This also involves measuring all EDV subscriber cables (Category 7) with a TDR measuring device.
• Ancillary Work: The scope also covers hourly work for technicians and helpers, including all associated costs, and tasks related to communication, security, and information technology systems, specifically data transmission networks and hazard/alarm systems.