Energy Efficiency & Sustainability

Weatherizing and Improving the Energy Efficiency of Historic Buildings - Practical guidance on how to weatherize a historic building using methods that have minimal impact on the historic building's design and materials.
Preservation Brief #3: Improving Energy Efficiency in Historic Buildings - Recently updated guide to reducing energy costs while preserving the character of historic buildings from the National Park Service.
Making Your Historic Building Energy Efficient - Information from the City of Boulder on how historic buildings can be made more energy efficient.
Preserving Energy - List of 7 affordable steps that can be easily done to reduce energy loss in a historic building from Traditional Building magazine.
Sustainability - Technical Preservation Services - Find out why "the greenest building is the 1 that's already built."
The Sustainability of Historic Preservation - Article on sustainability, green building, and energy efficiency from the Historic Denver News.