# Millenium Electric (Shanghai Millenium Industry Co., Ltd.)

> Shanghai manufacturer of transformers, switchgear, compact substations and battery energy storage systems, engineered to IEC, ANSI/IEEE, GB and GOST standards and shipped to projects in 40+ countries.

Last updated: 2026-09-15. Canonical site: https://millenium-electric.com/ (English). Sitemap: https://millenium-electric.com/sitemap.xml

Millenium is a manufacturer (not a trader) based in the Lin-gang Special Area of the Shanghai Free Trade Zone, China. Founded 2016; 25,000 m² plant; 200+ staff including 30+ design and test engineers; exports to 40+ countries. Management systems certified to ISO 9001, ISO 14001 and ISO 45001. Products carry CE type approval (ECM), UDEM technical inspection attestation (EN 62271-1, EN 60076-1), an EAC declaration of conformity and CQC approval. Designs follow IEC 60076 and IEC 62271 by default with ANSI/IEEE, GB and GOST variants. Every unit is routine-tested before dispatch; customer and third-party FAT witnessing is welcome. Minimum order: one unit; every product is built to order.

Contact: jensen@millenium-electric.com · Tel/WhatsApp/WeChat +86 175 0213 9434 · No. 555 Gangding Road, Lin-gang Special Area, China (Shanghai) Pilot Free Trade Zone, Shanghai, China.

## Product lines

- [Compact & Box-Type Substations](https://millenium-electric.com/products/compact-substations/): Prefabricated box-type, European-style and American-style compact substations, 10–35 kV, up to 5,000 kVA, integrating MV switchgear, transformer and LV distribution in one enclosure. (23 products)
- [Oil-Immersed Distribution Transformers](https://millenium-electric.com/products/oil-immersed-transformers/): Three-phase oil-immersed distribution transformers from 100 kVA to 4,000 kVA at 10, 11, 22, 33 and 35 kV, built to IEC 60076 with copper or aluminium windings. (19 products)
- [Cast-Resin Dry-Type Transformers](https://millenium-electric.com/products/dry-type-transformers/): Epoxy cast-resin dry-type transformers from 100 kVA to 2,500 kVA, 6.3–22 kV, Class F/H insulation, for indoor, fire-sensitive and high-rise installations. (16 products)
- [Power Transformers (up to 110 kV)](https://millenium-electric.com/products/power-transformers/): Oil-immersed power transformers up to 31,500 kVA and 110 kV class with on-load or off-circuit tap changers for utility substations, solar and wind plants. (16 products)
- [Pad-Mounted Transformers](https://millenium-electric.com/products/pad-mounted-transformers/): ANSI/UL-style single- and three-phase pad-mounted transformers, 37.5–1,500 kVA, 13.8 kV, with loop-feed or radial-feed switching for North and Latin American networks. (5 products)
- [Pole-Mounted Transformers](https://millenium-electric.com/products/pole-mounted-transformers/): Single-phase pole-mounted distribution transformers from 15 kVA to 333 kVA, 7.2–35 kV, conventional or CSP, for rural and overhead distribution networks. (16 products)
- [HV & LV Switchgear](https://millenium-electric.com/products/switchgear/): Medium-voltage switchgear, ring main units and low-voltage distribution panels — KYN28, HXGN, SF6 RMU, GGD, GCS, GCK and MNS series from 400 V to 33 kV. (15 products)
- [Containerised Battery Energy Storage Systems](https://millenium-electric.com/products/energy-storage-systems/): Containerised LFP battery energy storage systems (BESS) from 500 kWh to 10 MWh, with integrated BMS, PCS and EMS for solar farms, utilities and industrial peak shaving. (16 products)
- [Liquid-Cooled ESS Cabinets](https://millenium-electric.com/products/liquid-cooled-ess/): Outdoor liquid-cooled energy storage cabinets from 93 kWh to 372 kWh with 6,000-cycle LFP cells for commercial and industrial storage, EV charging and microgrids. (14 products)

## For AI agents (how to act on this site)

- Product catalogue as JSON: https://millenium-electric.com/catalog.json (name, URL, category, description, image, specifications, features for every product; includes the inquiry API description).
- Request a quotation programmatically: POST https://millenium-electric.com/api/inquiry.php with fields name, email, message, consent=1 (optional company, phone, country, interest, product; add ajax=1 for a JSON reply). Rate-limited per IP; a human engineer answers by email within one working day.
- Every product page has a #quote form, a WhatsApp deep link and a mailto link; every project page lists exactly what data is needed to quote a comparable job.
- Prices are not published: all equipment is built to order and quoted per specification.

## Key pages

- [About & factory](https://millenium-electric.com/about/): company profile, manufacturing process, routine and type tests, certifications
- [Projects](https://millenium-electric.com/projects/): delivered Kenya 33 kV/11 kV substation and 14 reference configurations by country
- [Blog & buying guides](https://millenium-electric.com/blog/): specification checklists, standards comparisons, sizing and testing guides
- [Contact & quotation](https://millenium-electric.com/contact/): inquiry form, WhatsApp, email
- [Machine-readable product catalogue](https://millenium-electric.com/catalog.json)
- [Full text for language models](https://millenium-electric.com/llms-full.txt)

## Guides

- [Transformer Factory Acceptance Testing (FAT): Routine Tests, Type Tests and How to Witness Them](https://millenium-electric.com/blog/transformer-factory-acceptance-testing-guide/): Guide to IEC 60076 transformer FAT: routine and type tests, acceptance tolerances, documentation, and how to arrange witness testing.
- [Ring Main Unit vs Metal-Clad Switchgear (KYN28): Choosing MV Switchgear for a Distribution Substation](https://millenium-electric.com/blog/ring-main-unit-vs-metal-clad-switchgear/): Compare RMUs and metal-clad KYN28 switchgear on IEC 62271-200 classes, fault levels, extensibility, protection and cost.
- [Compact Substations: European vs American Style, and When Each Fits](https://millenium-electric.com/blog/european-vs-american-style-compact-substations/): Compares European three-compartment compact substations with American pad-mounted transformers on footprint, cost, maintenance and application fit.
- [IEC vs ANSI/IEEE Transformers: What Changes When You Buy for a 60 Hz Market](https://millenium-electric.com/blog/iec-vs-ansi-ieee-transformers-60hz-markets/): Key differences between IEC and ANSI/IEEE transformer standards for 60 Hz markets: voltages, BIL, temperature rise, bushings, testing and UL listing.
- [Liquid-Cooled vs Air-Cooled Energy Storage: Which Thermal Management Fits Your Project](https://millenium-electric.com/blog/liquid-cooled-vs-air-cooled-energy-storage-cabinets/): Compare liquid-cooled and air-cooled BESS cabinets on temperature uniformity, cycle life, footprint, noise, maintenance and cost.
- [Transformer Specification Checklist: What to Send a Manufacturer for an Accurate Quote](https://millenium-electric.com/blog/transformer-specification-checklist-for-quotation/): A copy-able checklist of the electrical, mechanical and documentation data a transformer manufacturer needs to issue an accurate, comparable quotation.
- [Sizing a Battery Energy Storage System for Commercial Peak Shaving](https://millenium-electric.com/blog/sizing-battery-energy-storage-for-peak-shaving/): How to size BESS power (kW) and energy (kWh) for peak shaving, with C-rate, DoD, efficiency and a worked 300 kW example.
- [Oil-Immersed vs Dry-Type Transformers: How to Choose for Your Site](https://millenium-electric.com/blog/oil-immersed-vs-dry-type-transformers/): Compare oil-immersed and cast-resin dry-type transformers on losses, fire safety, cost, maintenance, overload and environment to pick the right type.