Engineering projects

Completed systems and project capabilities.

Real projects and integrated engineering, supply, construction, commissioning and maintenance services tailored to each site.

Completed projects

Solar PV systems with battery storage in Kardzhali and Momchilgrad.

Completed systems presented with concrete technical parameters, authentic site photography and a clearly documented configuration. All of them are part of our work on solar PV in Kardzhali and the region.

Completed 29.7 kWp rooftop photovoltaic system with 61.44 kWh battery storage in Momchilgrad

Momchilgrad · 2026 · Deye

29.7 kWp rooftop PV with 61.44 kWh battery storage, Momchilgrad

A hybrid rooftop PV + ESS system with three Deye inverters operating in parallel and twelve 5.12 kWh battery modules.

29.7 kWpPV capacity
61.44 kWhESS capacity
12 × 5.12 kWhBattery bank
3parallel inverters
MomchilgradLocation
2026Year

A scalable Deye architecture with three inverters and modular battery storage.

The system combines a 29.7 kWp rooftop photovoltaic plant with 61.44 kWh of battery storage. Three Deye hybrid inverters operate in parallel, while the battery bank consists of twelve 5.12 kWh SE-G5.1 Pro-B modules.

The batteries are organised into three 20.48 kWh clusters with separate protection enclosures. The rooftop PV array, inverter group, cable routes and ESS area form a coordinated system with a clear technical layout.

Configuration

Rooftop PV array — 29.7 kWp
Battery storage — 61.44 kWh
12 × Deye SE-G5.1 Pro-B at 5.12 kWh
3 battery clusters × 20.48 kWh
3 Deye hybrid inverters in parallel

PV and ESS solutions

Completed 37.8 kWp rooftop photovoltaic system with 64 kWh battery storage in Kardzhali

Kardzhali · 2026 · Parallel system

37.8 kWp rooftop PV with 64 kWh battery storage, Kardzhali

A hybrid rooftop PV + ESS system with two inverters operating in parallel and four 16 kWh battery modules.

37.8 kWpPV capacity
64 kWhESS capacity
4 × 16 kWhBattery bank
2parallel inverters
KardzhaliLocation
2026Year

A parallel hybrid architecture for a larger PV + ESS system.

The system combines a 37.8 kWp rooftop photovoltaic plant with a 64 kWh battery bank. Two hybrid inverters operate in parallel, while the storage system is built around four 16 kWh battery modules.

The photovoltaic field is installed along the pitched metal roof. The technical area integrates the inverters, protection equipment, power distribution and battery bank. The photographic record presents the real installation and the organisation of its subsystems.

Configuration

Rooftop PV array — 37.8 kWp
Battery storage — 64 kWh
Four 16 kWh battery modules
Two hybrid inverters in parallel
DC/AC routes and protection equipment

PV and ESS solutions

Completed 11.25 kWp rooftop photovoltaic system with 16 kWh battery storage in Kardzhali

Kardzhali · 2026 · Deye

11.25 kWp rooftop PV with 16 kWh battery storage, Kardzhali

A Deye-based hybrid PV system integrating photovoltaic generation and battery storage within one coordinated energy system.

11.25 kWpPV capacity
16 kWhESS capacity
DeyePlatform
Hybrid rooftop PVSystem type
KardzhaliLocation
2026Year

PV and ESS working as one coordinated system.

The project combines an 11.25 kWp rooftop photovoltaic array with a 16 kWh energy storage system. The Deye hybrid platform coordinates generation, storage and energy exchange with the site's electrical installation.

The photographs document the flat-roof mounting structure, module-row layout and technical area containing the inverter, battery and protection boards. The case study uses authentic site photography without generic advertising imagery.

Configuration

Rooftop PV array — 11.25 kWp
Battery storage — 16 kWh
Deye hybrid platform
Inverter, protection and battery equipment
Local operating-status monitoring

PV and ESS solutions

Completed work

Engineering solutions delivered on site.

The selected photographs show actual project stages and completed Power Design Engineering systems. Each image is included for its clear technical relevance and execution detail.

Photovoltaic systems

Rooftop systems, photovoltaic canopies and different mounting solutions from completed sites.

Rooftop photovoltaic system — completed installation

Photovoltaic canopy with steel support structure

Ballasted mounting structure for a flat-roof PV system

Residential photovoltaic system with a covered parking area

ESS

Inverters and energy storage

Inverters, battery modules and multi-component configurations integrated for the site's operating requirements.

Parallel photovoltaic inverter configuration

Dual-inverter configuration with dedicated isolators

Hybrid battery system for backup operation

Electrical boards and protection

Distribution, protection and control boards for photovoltaic and electrical-power systems.

PV distribution board — protection and monitoring

Distribution board — busbars and protective equipment

Power distribution board with control and energy monitoring

MV/LV

Substations and power infrastructure

Packaged equipment and infrastructure for grid connection, transformation and distribution.

Project scope

Systems we design and build.

ROOFTOP PV

Systems for industrial, commercial, public and residential buildings, tailored to the load, roof structure and required operating mode.

Self-consumptionZero ExportGrid connection

ServicesEngineering · Construction · Commissioning

GROUND-MOUNTED PV

Integrated power-generation solutions covering technical sizing, grid connection, protection and control.

Energy analysisCable infrastructureSCADA and monitoring

ServicesFrom concept to commissioning

PV + ESS

Combined PV and ESS systems for backup, cost optimisation and greater energy independence.

High self-consumptionBackup / EPSEnergy management

ServicesEngineering · Integration · Configuration

ESS / BESS

New installations and retrofits with BMS, PCS, EMS, communications and automated control.

Peak shavingAC / DC couplingIsland mode

ServicesAnalysis · Engineering · Integration

LV CABLE

Underground and exposed cable systems for external supply and distribution to switchboards, buildings and equipment.

LV distributionCable routesProtocols and as-built records

ServicesEngineering · Construction · Testing

MV CABLE

MV cable links for substations, PV, ESS, industrial capacity and distribution switchgear.

Up to 35 kVJoints and accessoriesPhasing and protection

ServicesEngineering · Construction · Testing

SUBSTATIONS

Transformer substations for connection, conversion, distribution and safe operation of consumers and generators.

TransformationProtection relaysMetering and automation

ServicesEngineering · Supply · Installation

MV OVERHEAD

Overhead grid links and branches with engineered conductors, poles, insulators, grounding, crossings and easements.

Up to 35 kVMechanical studiesPoles and fittings

ServicesEngineering · Construction · Commissioning

LV OVERHEAD

LV overhead distribution for consumers, street lighting and local networks with the required protection and clearances.

Up to 1 kVAerial bundled conductorsBranches and grounding

ServicesEngineering · Construction · Measurement

LIGHTING

Energy-efficient lighting systems with new switchboards, cabling, poles, protection and automated control.

LED lightingControl switchboardsGrounding

ServicesEngineering · Delivery · Control

EV CHARGING

Charging-point power supply with switchgear, cabling, protection, communications and dynamic load management.

AC and DC chargingLoad managementPV / ESS integration

ServicesAssessment · Construction · Commissioning

O&M

Monitoring, analysis, preventive maintenance and technical service for PV, ESS and electrical-distribution systems.

Remote monitoringPeriodic inspectionsTechnical reports

ServicesSupervision · Diagnostics · Service

Next step

We design. We build. We maintain. Let’s structure your project.

Send an enquiry

Completed systems and project capabilities.

Solar PV systems with battery storage in Kardzhali and Momchilgrad.

29.7 kWp rooftop PV with 61.44 kWh battery storage, Momchilgrad

A scalable Deye architecture with three inverters and modular battery storage.

Configuration

37.8 kWp rooftop PV with 64 kWh battery storage, Kardzhali

A parallel hybrid architecture for a larger PV + ESS system.

Configuration

11.25 kWp rooftop PV with 16 kWh battery storage, Kardzhali

PV and ESS working as one coordinated system.

Configuration

Engineering solutions delivered on site.

Photovoltaic systems

Inverters and energy storage

Electrical boards and protection

Substations and power infrastructure

Systems we design and build.

Rooftop photovoltaic power plants

Ground-mounted and industrial PV plants

Hybrid PV plants with battery storage

Energy storage systems and retrofits

Low-voltage cable lines — 0.4–1 kV

Medium-voltage cable lines — 1–35 kV

20/0.4, 20/0.6 and 20/0.8 kV substations

Medium-voltage overhead lines

Low-voltage overhead lines

Street, park and industrial lighting

Electric-vehicle charging infrastructure

Monitoring and technical maintenance

We design. We build. We maintain. Let’s structure your project.We design.We build.We maintain.Let’s structure your project.

We design. We build. We maintain. Let’s structure your project.