End-to-endDesign → commissioning
Energy & electrical engineering solutions
Energy engineered
to perform.
End-to-end engineering for PV and ESS/BESS — from analysis and design to construction, commissioning, monitoring and technical support.
PV + ESSOne integrated energy system
LV / MVInfrastructure & protection
What we do
Engineering from first idea to a working system.
We combine energy generation, storage and electrical infrastructure into one technically grounded solution.
01↗
Photovoltaic power plants
Design, supply, construction, testing and commissioning of rooftop and ground-mounted PV power plants.
02↗
ESS / BESS systems
Design, supply and installation of ESS/BESS sized from real load profiles for self-consumption, peak shaving and backup.
03↗
LV / MV infrastructure
LV/MV cable lines, packaged substations, LV/MV overhead lines, protection, grounding, metering, automation and communications.
04↗
Engineering and regulatory consulting
Support with applicable requirements, required documents, grid-connection procedures and safe operation.
Completed project · Momchilgrad · 2026
29.7 kWp PV + 61.44 kWh ESS on the Deye platform.
An authentic rooftop hybrid system with three parallel Deye inverters and twelve 5.12 kWh battery modules.
29.7 kWp61.44 kWh3 inverters
View the projectBrands & technologies
Equipment selected for the actual task.
Platforms and manufacturers we integrate into real-world PV, ESS and electrical-engineering solutions.
Explore all brands→
Our approach
One responsibility. Four clear stages.
We own the technical sequence so every system is safe, measurable and ready for real-world operation.
Analysis
Site, load profiles, objectives and constraints.
Engineering
Sizing, technical solution and documentation.
Construction
Supply, installation, connection and testing.
Commissioning & support
Configuration, monitoring and technical service.
Why choose us
One engineering partner. End-to-end responsibility.
We connect engineering, equipment, delivery and operation into one consistent technical solution.
End-to-end engineering
From technical assessment and system studies to construction, configuration and commissioning.
PV, ESS and LV/MV
We engineer generation, storage and electrical infrastructure as one integrated system.
Site-specific sizing
Power, capacity and operating modes are selected around real loads, site conditions and client objectives.
Regulatory compliance
We incorporate applicable technical requirements, protection, selectivity and the required project documentation.
Monitoring and support
Our involvement continues after commissioning with supervision, diagnostics, optimization and technical service.
Integrated control
A system designed to work as one.
PV, battery storage, metering and control are engineered together — for higher self-consumption, predictable operation and full visibility of energy flows.
- ✓High self-consumption
- ✓Zero Export and power control
- ✓Backup and island operation
- ✓Centralized monitoring
Power Design Engineering
Engineering precision. Practical delivery.
POWER DESIGN ENGINEERING LTD develops and delivers solutions for energy generation, storage and intelligent energy management.
We work on industrial, commercial, public and residential projects. Our focus is on safe, efficient and reliable systems tailored to each site and compliant with applicable technical and regulatory requirements.
Start a conversation
Tell us about your project.
Send us the key site parameters. We will structure the technical questions and define the next steps.
Send an enquiryEmailpower.design@pd-eng.netPhone+359 888 437 547WhatsApp BusinessSend a message ↗Viber BusinessStart a chat ↗FacebookPower Design Engineering Ltd ↗
Office4 Osogovo St., Kardzhali, Bulgaria
WarehouseSouth Industrial Zone, Kardzhali, Bulgaria