How a Solar Power Station Project Works: From Technical Specs to Grid Connection

In Uzbekistan, building any solar power station — from a small rooftop system to an industrial facility — follows a single regulated pathway. Below is the step-by-step process that every DETOS project goes through.

Step 1. The Client Obtains Technical Specifications (TS)

Everything starts with the client. Before any design work begins, Technical Specifications (TS) must be obtained from the authorized authority — the district or city energy management office (GorPES/RayPES). The TS defines connection parameters: permitted capacity, connection point, protection and metering requirements.

No project can be legally approved or commissioned without TS in hand.

Step 2. DETOS Develops the Project & Technical Documentation

Based on the issued TS, DETOS develops a full set of project documentation: power supply diagrams, capacity calculations, equipment specifications, layout drawings, single-line diagrams, and installation scope of work.

We design systems of every type: on-grid (connected to the national grid), off-grid (fully autonomous), and hybrid (battery backup + grid).

All documentation is prepared in accordance with current Uzbekistan regulations and international standards (IEC, GOST).

Step 3. DETOS Obtains Project Approval from GorPES

The completed project documentation is submitted for approval to GorPES (city electricity networks). Engineers from the energy supply organization review the project for compliance with the TS, safety standards, and technical regulations.

Upon approval, an official Project Approval Conclusion is issued — the formal authorization to build according to this design. DETOS manages the entire approval process from submission to receipt.

Step 4. The Installation Contractor Performs Construction & Mounting

With an approved project in hand, the installation contractor begins construction and mounting works: erecting support structures, installing panels, laying cables, and mounting inverters, protection systems, and metering equipment.

All work is performed strictly according to the DETOS design. Any deviations are documented and approved before work is completed.

Step 5. The Client Submits a Request to the Regional Electricity Network

Once construction is complete, the client submits a formal letter to the regional electricity network (RayPES/GorPES) requesting a technical inspection of the facility for commissioning approval.

The letter is accompanied by: the approved project, concealed works certificates, equipment passports, and as-built documentation.

Step 6. TETK Technical Inspection & Contract Signing

Inspectors from the regional TETK (Technical Operation of Thermal and Electrical Networks) visit the site and verify that the completed works comply with the project documentation and safety requirements.

Based on the inspection, a Technical Inspection Report is drawn up. If no issues are found, the client and TETK sign a Technological Connection Agreement, after which the station is officially commissioned and connected to the grid.

Why Documentation Decides Everything

Most delays and rejections at commissioning are not caused by poor installation quality — they come from documentation errors: incorrectly issued TS, discrepancies between the design and actual build, or an incomplete document package at submission.

This is exactly what DETOS specializes in. We prepare documentation so that it passes every approval stage without being returned.