Top 5 Energy-Efficient Distribution Transformers in the UK (2025 Edition)

As UK industries race to meet net-zero targets and improve energy efficiency, the demand for energy-efficient distribution transformers is rapidly increasing. Whether yo

u're managing a manufacturing plant, a hospital, or a university campus, the right distribution transformer can significantly lower your energy costs and environmental footprint.

In this blog, we’ve reviewed five of the best distribution transformers available in the UK for 2025, focusing on energy savings, regulatory compliance, and long-term value. Leading the way is Wilson Power Solutions, a UK-based manufacturer known for its cutting-edge low-loss distribution transformers.

1. Wilson e2 Super Low Loss Distribution Transformers

Supplier: Wilson Power Solutions – Distribution Transformers

The Wilson e2 range is the UK’s leading choice for energy-efficient distribution transformers. Designed to exceed Eco Design Tier 2 regulations, the Wilson e2 has helped hundreds of organisations reduce transformer losses and operational carbon output.

Why Choose Wilson e2 Distribution Transformers?

• Up to 75% lower no-load losses than standard units

• Compliant with latest EU energy efficiency standards

• Ideal for 11kV and 33kV distribution networks

• Trusted by NHS, retailers, universities, and manufacturers

• Helps with SECR and ESOS compliance

If you're upgrading your infrastructure, Wilson e2 distribution transformers are a future-proof investment in both energy and carbon savings.

2. ABB EcoDry Distribution Transformers

Supplier: ABB UK

ABB’s EcoDry range offers dry-type distribution transformers that are energy efficient and ideal for indoor or fire-sensitive environments. Built for reliability and performance, ABB’s transformers meet international standards and come in multiple voltage options.

Features:

• Dry-type, fire-safe design

• Low energy losses

• Quiet operation

• Ideal for commercial buildings and public infrastructure

3. Siemens GEAFOL Cast-Resin Distribution Transformers

Supplier: Siemens UK

Siemens is a trusted name in power technology, and their GEAFOL distribution transformers offer a strong balance of durability and sustainability. Suitable for both indoor and outdoor use, they are designed for a long service life with minimal maintenance.

Features:

• Flame-resistant, recyclable design

• Low operational and no-load losses

• Reliable under extreme conditions

• Widely used in data centres and renewable energy setups

4. Schneider Electric TRIHAL Distribution Transformers

Supplier: Schneider Electric UK

The TRIHAL range is a dry-type distribution transformer designed for energy efficiency and operational safety. It offers superior environmental protection and reduced losses, making it suitable for industrial and commercial sites.

Features:

• Eco Design Tier 2 compliant

• Excellent thermal and electrical protection

• Long-term reliability

• Supports green building certifications

5. Brush Transformers – Custom Distribution Transformers

Supplier: Brush Transformers UK

Brush has been designing and manufacturing distribution transformers in the UK for over a century. They offer custom-engineered solutions tailored to specific industry requirements and voltage ranges, including 11kV and 33kV systems.

Features:

• UK-manufactured with flexible configurations

• Supports grid, renewable, and industrial systems

• Built for durability and maximum uptime

• Available in both standard and bespoke models

Final Thoughts

When choosing a distribution transformer, consider not only voltage and load but also energy losses, maintenance requirements, and long-term carbon savings. The manufacturers listed above are all great but the best in the UK—offering distribution transformers that deliver both performance and sustainability is Wilson power Solutions. 

For companies focused on reducing emissions and cutting energy costs, Wilson Power Solutions stands out as a leader. Their Wilson e2 and T1 Eco series of distribution transformers offer unmatched energy efficiency backed by exceptional UK-based support.