Solar Power – Reliable STEP-UP Solutions for Grid Integration
RE-Tech’s Solar solutions are designed to ensure efficient, safe, and regulation-compliant grid connection for solar power generation.
Solar energy is one of the fastest-growing energy sources, also in Finland. RE-Tech provides robust STEP-UP transformers and prefabricated substations, specifically engineered for the challenging Nordic climate. We deliver tailored solutions for both small and large solar farms, typically ranging from 2 to 10 MVA and operating at 20.5 kV or 33 kV voltage levels.
STEP-UP Transformers – Power and Performance for Solar Applications
RE-Tech’s solar transformers are built to handle the highly variable load profile typical of solar generation. Key design features include:
- Radiator structure for >3 MVA units – uses cooling technology from power transformers, ensuring performance under high temperature and dynamic load conditions
- Installed on SKID base or in prefabricated substation – flexible for both outdoor and indoor deployment
- Tier 2 compliance – all units meet the EU Ecodesign energy efficiency requirements
- Standard models and custom options – adjustable voltage levels, cooling methods, and enclosures
Technical Specifications – Solar Transformers
Feature | Value / Option |
Power range | 2–10 MVA |
Voltage levels | 20.5 kV / 33 kV |
Construction | Radiators for >3 MVA |
Installation | SKID / compact substation |
Standards | IEC 60076, Tier 2 |
Solar Substations – HSE-driven Design at the Heart of the Solar Farm
In addition to transformers, RE-Tech delivers fully integrated solar substations tailored for utility-scale photovoltaic plants. Key Features:
- HSE-oriented design – meeting high Health, Safety and Environmental standards
- Fence-free installation – suitable for placement directly within the solar field
- Modular and scalable – transformer power up to 10 MVA, with up to 30 LV outputs
- MV switchgear – equipped with trusted OEM switchgear brands
Substation Specifications (example)
Feature | Value / Option |
Max transformer rating | 10 MVA |
Number of LV outputs | Up to 30 |
MV switchgear | Renowned manufacturers |
Structure | Outdoor, fence-free installation |
Safety | HSE optimized |
Why Choose RE-Tech for Solar Projects?
RE-Tech has delivered over 80 MVA of transformer and substation solutions for solar and wind power across Finland.
- High efficiency and long service life
- Fast response and local technical support
- Compliance with DSO and TSO requirements
- Scalable from 50 kW to 200 MW
