Renewable Energy Transformer
Whether you’re stepping up voltage from a utility-scale solar inverter, integrating an offshore wind farm into the grid, or connecting a battery energy storage system to medium-voltage infrastructure — your renewable energy transformer needs to handle variable loads, high harmonic distortion, and grid code compliance.
Sinotech manufactures renewable energy transformers from 400V to 220kV, engineered to IEC 60076 / IEEE C57 standards with full customization from core configuration to cooling class. We cover every major application in the renewable energy chain:
Solar PV Transformer: Inverter step-up units built to suppress harmonics and handle fluctuating DC-side output
Wind Turbine Transformer: Compact oil-immersed or dry-type designs rated for variable-speed, variable-load operation
BESS Transformer: Bidirectional step-up units engineered for continuous charge-discharge cycles and PCS coupling
Grid Interconnection Transformer (GSU): High-voltage generator step-up solutions for utility-scale grid integration
Custom Renewable Energy Transformer Manufacturer in China
Sinotech’s renewable energy transformer portfolio covers solar PV, wind turbine, and BESS applications, with primary voltages from 10kV to 35kV and capacities from 500kVA to 3150kVA. Standard and custom configurations include inverter step-up transformers, nacelle-mounted wind turbine transformers, and bidirectional BESS transformers featuring ONAN, ONAF, or dry-type cooling systems. Every unit is built with high-grade silicon steel cores, copper or aluminum windings, and vacuum-impregnated insulation to minimize no-load losses and ensure reliable long-term operation in harsh outdoor environments.
Primary Voltage
10-35kV
Capacity
500-3150kVA
Standards
ANSI/IEEE/DOE/CSA/AS
What Are the Standard Size of Sinotech Renewable Energy Transformer?
| Rated Power | 1000kVA / 1250kVA / 1600kVA / 2500kVA / 3150kVA | |
| Rating Primary Voltage | 10kV, 11kV, 20kV, 33kV, 35kV or others | |
| Secondary Voltage | Customized | |
| Frequency | 50/60Hz | |
| Vector Group | Dyn11,Ynd11,Dyn11yn11,YNd11d11 | |
| Winding Material | Aluminum/Copper | |
| Zero-Sequence Impedance | Customized | |
| Altitude | ≤1,000m or Customized | |
| Color | ANSI 70 Light gray/Munsell 7GY3.29/1.5 or customized etc | |
| Tank material | Mild Steel, 304 Stainless Steel | |
Custom Renewable Energy Transformer Solutions
Whether you’re working with a non-standard grid voltage, deploying transformers in extreme desert heat or offshore salt-spray environments, or need a compact design to fit inside a wind turbine nacelle. From selecting the optimal cooling method and insulation medium to configuring OLTC tap changers for voltage regulation and integrating online monitoring systems, every detail is engineered for your site conditions and grid code requirements
Our renewable erergy transformers are wound with high-grade copper conductors and cold-rolled grain-oriented silicon steel cores to minimize no-load losses, keeping your system running efficiently across decades of operation.
Advanced harmonic suppression design ensures stable performance when paired with solar inverters or BESS power conversion systems, where harmonic distortion levels would degrade a standard transformer over time. Every unit undergoes full IEC / IEEE type testing — including lightning impulse, temperature rise, and short-circuit withstand tests.
Our Global Projects
Renewable Energy Transformer in Saudi Arabia
Renewable Energy Transformer in South Africa
Renewable Energy Transformer in Nepal
Renewable Energy Transformer in United Kingdom
Renewable Energy Transformer to Sri Lanka
Renewable Energy Transformer to Nigeria
Renewable Energy Transformer Application
Whatever stage of the renewable energy chain your project sits in — utility-scale generation, grid interconnection, battery storage, or emerging clean energy infrastructure — Sinotech has supplied transformers for it. With installations across 80+ countries and applications ranging from rooftop PV to 500MVA offshore wind substations, we bring proven field experience to every new project we take on.
Solar/Wind Power Generation
Hydropower & Other Renewables
Battery Energy Storage
High Quality, Reliable, and Long lasting New Energy Transformer
Renewable energy transformers operate in some of the harshest conditions in the power industry — desert heat, offshore salt spray, and continuous harmonic stress from inverters. Sinotech addresses each of these directly: Class H insulation for high-temperature environments, IP65-rated enclosures for coastal and offshore sites, and K-factor rated windings that maintain performance under sustained harmonic loading.
30+ Years of Industry Expertise
With over 30 years of combined experience in power electrical engineering, Sinotech brings unmatched technical depth to every project. Our team understands the complexities of different voltage levels, load profiles, and environmental conditions.
Large Manufacturing Capability
Sinotech operates a world-class manufacturing base capable of handling both small custom orders and large-volume utility projects. Our scale ensures consistent quality, competitive pricing, and reliable delivery for clients worldwide.
Comprehensive Product Portfolio
Sinotech offers a complete range of power transformation products, eliminating the need for multiple suppliers. From distribution transformers to prefabricated substations, we cover your entire power infrastructure requirements.
Full Customization Capability
Sinotech engineers custom transformer solutions for high-altitude zones, extreme temperatures, corrosive atmospheres, and renewable energy applications with documented project success.
IEC, ANSI, and CE Certified Quality
Every Sinotech transformer meets stringent international standards. We provide full test reports and certification documentation with each shipment, ensuring regulatory compliance in your target market.
Rigorous Quality Control Process
Quality is built into every step of our manufacturing process. From silicon steel core selection to vacuum oil filling, Sinotech maintains strict controls to guarantee performance, safety, and long service life.
Contact Us Now
OEM Renewable Energy Transformer Supplier
Our production lines support both standard power transformer models and fully custom designs, with annual capacity exceeding 15,000 transformer units. We have successfully executed OEM orders for clients in Southeast Asia, the Middle East, Africa, Latin America and more.
Our production lines support both standard power transformer models and fully custom designs, with annual capacity exceeding 15,000 transformer units. We have successfully executed OEM orders for clients in Southeast Asia, the Middle East, Africa, Latin America and more.
Sinotech welcomes inquiries from distributors, brand owners, and EPC contractors seeking a reliable power transformer manufacturer.
Commercial Rooftop PV — Vietnam
Third order with Sinotech now. We source pad-mounted transformers for commercial rooftop PV installations across Southeast Asia. Consistent build quality, and their technical team actually responds when you have a question mid-project.
Global Clients
