Large-Scale Commercial Solar PV – Wenzel’s the Bakers

Commercial | Manufacturing | Sunley House, Watford

Overview

Wenzel’s the Bakers partnered with Synergy PV Renewables to execute a major sustainability upgrade at their high-demand production facility in Sunley House, Watford. With the site operating extensive hours to support baking, refrigeration, and distribution logistics, the facility faces a significant and continuous energy demand.

The objective was to implement a large-scale renewable energy solution that would not only drastically cut carbon emissions but also stabilise long-term operational costs against a volatile energy market.

Completed in September 2023, this 228.8 kWp installation represents a strategic alignment between energy generation and consumption. Because the factory runs energy-intensive equipment, including industrial mixers, ovens, and packaging lines, throughout the day, the solar generation curve aligns perfectly with the facility’s peak operational hours.

This allows Wenzel’s to offset a massive portion of their daytime electricity consumption directly at the point of use, effectively future-proofing the business against rising commercial electricity prices while solidifying their reputation as an environmentally responsible UK manufacturer.

Key Facts

228.8 kWp
Total System Capacity
558 Panels
Canadian Solar 410W
1,000 Tonnes
Lifetime CO₂ Savings

Performance

The system is certified to generate approximately 188,000 kWh of clean electricity annually. This massive influx of renewable power dramatically lowers the factory’s dependence on the grid, avoiding over 40 tonnes of CO₂ emissions every single year. To put that into perspective, it is equivalent to avoiding over 160,000 km of diesel van mileage or planting more than 1,800 trees annually.

Over the system's 25-year lifespan, Sunley House will reduce its carbon footprint by more than 1,000 tonnes. This makes it one of Wenzel’s most impactful sustainability investments to date, significantly improving ESG performance and supporting corporate sustainability reporting.

Sunley House – Wenzel’s the Bakers Factory, Watford
Commercial solar panels Synergy

System Overview

To handle the scale of the facility, we deployed a high-capacity commercial array designed for durability and maximum yield.

  • Solar Array: The roof is fitted with 558 x CS 410W mono-crystalline Canadian Solar modules, chosen for their high efficiency and reliability in commercial applications.

  • Inverter Setup: Power conversion is managed by 2 x Solis 100 kW three-phase commercial inverters. These heavy-duty units are sized to provide stable AC output compatible with the factory's industrial infrastructure.

  • Completion: The system was fully commissioned and operational by September 2023, delivering immediate returns on energy reduction.

Case study produced by
Solar Panel Expert and Co-Founder of Synergy PV Renewables, with over 15 years of experience as a qualified electrician. Bringing deep technical knowledge to every project, he is known for his hands-on expertise in helping homeowners and businesses take control of rising energy costs and embrace greener living through reliable, high-performance solar solutions.

Share this project

We’d really appreciate you helping to get the word out, you can share this page via any social media channels or to friends and family via WhatsApp.

Get In Touch

Other Case Studies

Sunley House – Wenzel’s the Bakers Factory, Watford
Commercial
Sunley House, Watford
Commercial | Manufacturing | Sunley House, Watford
Residential Solar PV – Hemel Hempstead
Residential
Hemel Hempstead
Residential | Willow Lane, Hemel Hempstead
Residential Solar & Battery Installation in Radlett
Residential
Radlett, Hertfordshire
Residential | Harris Lane, Radlett, Hertfordshire
Commercial Solar PV – Fenwick Estate
Commercial
Fenwick Estate
Commercial | Social Housing | Clapham North, London
Integrated In-Roof Solar & Battery Storage – Harpenden
Residential
Harpenden
Residential | Bamville Woods, Harpenden
Commercial Solar PV – Hemel Hempstead School
Commercial
Hemel Hempstead
Commercial Solar PV for Hemel Hempstead School

Thinking About Solar?

Our free guide will walk you through the benefits, costs, and savings of solar panels and why choosing Synergy makes all the difference.