Sustainability Crouch Hill outdoor play Penoyre and Prasad Architects
Sustainability Guys Tower Penoyre and Prasad architects
Sustainability Guys Tower Facade Detail Penoyre and Prasad architects


Low energy design saves money and reduces carbon emissions. It anticipates the future: the inevitable end to our reliance on fossil fuels. Minimising energy use is a key element in the ideal of zero waste and the wise use of resources that add up to sustainable design.

The pioneering technologies of Penoyre & Prasad’s Millennium Centre (designed 1995), having minimised embodied carbon, have consistently delivered low operational carbon as predicted. Our carbon negative Crouch Hill Park development (2012) and Guy’s Tower energy efficient external retrofit (completion 2013) continue our pragmatic yet ambitious approach.

We are committed to helping our clients achieve their sustainability aims affordably, whether through new buildings or the intelligent renewal or retrofitting of existing buildings.  We focus on designing versatile and adaptable buildings with simple, robust and well-integrated services that meet current needs, whilst allowing for future ones, as yet unknown.

Our buildings achieve high scores in BREEAM, LEED and Code for Sustainable Homes but our starting point is in simple, precise and easily understood measurements, primarily of energy use and carbon emissions.

Post-completion, we work with our clients to fine-tune buildings, monitoring occupant behaviour to further minimise energy use.



  • Technology Strategy Board (TSB) funded Building Performance Evaluation (BPE) in-use study of Crawley Library with Oxford Brookes University’s Institute for Sustainable Development (OISD), Low Carbon Building Group, 2011-2013.
  • A TSB funded research project “Design for Future Climate (D4FC)” developing strategies to adapt UK buildings to climate change. Penoyre & Prasad are using the current QE11 hospital project as a ‘live’ case study working with Oxford Brooks University and the project design team. Completion due 2015.
  • Working alongside Oxford Brooke’s University to undertake regular (2004 – ongoing) post-occupancy evaluations of our projects, measuring the actual environmental performance of our buildings to bring a rigour to our intentions and process, and ensure that our design solutions continue to be pragmatic and efficient. The findings of this work are shared with the industry via the Carbon Buzz website.

Our low energy design projects are currently featured as case studies on industry websites including the UK Green Building CouncilRIBA Sustainability Hub and Greener Business.



Penoyre & Prasad LLP:

Sunand Prasad:


Case studies

Crouch Hill Community Park

A high quality learning and recreational environment on a neglected piece of Metropolitan Open Land in North London.

... More

Retrofit for Living

61 Warwall Road is one of 87 Retrofit for the Future projects, targeted at low-rise houses from the UK’s social housing stock and seeking innovative whole-house solutions to achieve an 80% reduction in CO2 emmisions.

... More

Non-Stop Forest

Penoyre & Prasad teamed up with Trees for Cities to create the Non-Stop Forest, a unique event to mark the final day of the 2008 London Festival of Architecture.

... More

Cape Farewell

Cape Farewell pioneers the cultural response to climate change by working internationally, bringing together artists, scientists and communicators to stimulate the production of art founded in scientific research.

... More