Network Overview

The Private Building Efficiency (PBE) Network supports city efforts to improve the energy efficiency of existing commercial and residential buildings.

Energy consumed in buildings accounts for almost half of C40 cities’ carbon emissions on average, and around two thirds of this comes from private buildings. Buildings can last over 100 years, much longer than other energy-using infrastructure so increasing their energy efficiency is critical to meeting global climate goals. Improving building energy efficiency can bring many other additional benefits such as reduced energy bills, healthier workplaces, new jobs and greater energy security.

Private Building Efficiency Network Focus Areas

Cities participating in the network have prioritized three focus areas around which they are actively sharing policies, strategies, ideas and challenges with one another. The focus areas are:

Data for policy - how cities are collecting and using building energy data to drive ambitious policy development, understanding how to use data for detailed modelling to plan ambitious policies and encouraging stakeholders to collect and disclose data

Residential Buildings - encouraging multifamily and single family home retrofits by exploring financing schemes for action and raising awareness and design engaging campaigns to encourage citizen action

Deep retrofit - understanding the policies & programmes needed for achieving zero carbon building retrofits

Commercial Buildings - encouraging commercial building owners, tenants and landlords to take action and developing building tune-up programs and foster retro-commissioning in commercial buildings

A map of policies in place in cities in the network alongside in-depth case studies can be found in two reports: Urban Efficiency (English | Japanese) and Urban Efficiency II.  See also here a detailed in-depth data manual on building energy data collection, methodologies, and analysis (English | Spanish).

The Private Building Efficiency Network is led by Sydney and San Francisco.

"This C40 network offers wonderful opportunities to learn from others on what has worked (and has not) in other cities; to undertake joint research and projects to extend our knowledge; and simply to discuss the issue of the day with colleagues in other cities facing the same issues … And as part of this contribution we were delighted to take up the offer to co-lead the buildings network with Tokyo, and help ensure that the network delivers significant value to its members."

– Tom Belsham, Manager of the Sustainability Programs Unit at the City of Sydney

“We’re thrilled to welcome our sister city of San Francisco as the new co-lead of the private building efficiency network. Our strong partnership with Tokyo delivered real insights into tackling emissions, and I would like to offer our sincere thanks for that work. “We know that collaboration is our best weapon in the battle against climate change and that is why C40 is so important. This is a great opportunity to learn and inspire and we look forward to collaborating with all cities in the network.”

– Clover Moore, Lord Mayor of Sydney

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