Overview 

One Angel Square in Manchester, United Kingdom, is a landmark in sustainable architecture, renowned for achieving the highest BREEAM (Building Research Establishment Environmental Assessment Method) "Outstanding" rating. This accolade underscores its exceptional energy efficiency and sustainability features. Here are some key aspects that contribute to its remarkable sustainability:

Actions for Sustainability

Energy Efficiency

• Passive Design: The building maximizes natural light and uses a double-skin facade for insulation and natural ventilation.
• Energy-Efficient Systems: Incorporates advanced HVAC systems and energy management technologies.
• Combined Heat and Power (CHP): Features a CHP plant that generates electricity and recovers heat, improving energy efficiency.

Renewable Energy

• Solar Power: The roof is equipped with photovoltaic panels capable of generating approximately 250,000 kWh of renewable electricity annually.

Water Efficiency

• Rainwater Harvesting: Collects rainwater for landscaping and toilet flushing, saving approximately 2.8 million liters of water annually.
• Greywater Recycling: Recycles greywater for non-potable uses, further reducing water consumption.

Sustainable Materials

• Recycled Content: Incorporates materials with high recycled content, contributing to reducing embodied carbon.
• Low-Carbon Materials: Emphasizes materials with low embodied carbon to minimize environmental impact.

Results and Achievements

Environmental Impact

• Energy Savings: Achieves a 50% reduction in energy consumption compared to a typical office building of its size.
• Carbon Emissions Reduction: Results in an annual reduction of approximately 1,500 tons of CO2 emissions.

BREEAM Rating

• BREEAM "Outstanding": One Angel Square achieved the highest BREEAM rating possible, scoring 95.16%, making it one of the most sustainable buildings in the UK.

Operational Efficiency

• Occupant Comfort: Provides a high-quality indoor environment with excellent natural daylight and air quality.
• Maintenance: Utilizes durable materials and systems, reducing operational and maintenance costs over time.

Economic Benefits

• Operational Cost Savings: The building's energy-efficient design and systems lead to significant operational cost savings for the Co-operative Group.
• Increased Value: Achieving the BREEAM "Outstanding" rating enhances the building's market value and attracts environmentally conscious tenants.

Statistical Information

• Energy Efficiency: Achieves an actual energy use intensity of 110 kWh/m²/year, significantly lower than the UK average for commercial offices.
• Water Efficiency: Saves approximately 2.8 million liters of water annually through rainwater harvesting and greywater recycling.
• Carbon Emissions: Reduces approximately 1,500 tons of CO2 emissions annually through energy-efficient operations and renewable energy generation.

In summary, One Angel Square not only sets a standard for sustainable architecture but also demonstrates tangible benefits in energy savings, water conservation, and reduced carbon emissions, while enhancing operational efficiency and economic viability. Its achievements underscore the importance and feasibility of sustainable building practices in modern urban development.