Social Responsibility
Economic Prosperity
Environmental Stewardship
Who We Are
Sustainability Consultants you Can Trust
LEO - The Sustainability Experts, is a nonprofit organization that helps corporations and organizations quantify their current environmental impacts and develop sustainable practices to enhance their environmental stewardship, social responsibility, and economic prosperity. We develop new tools for sustainability and strive to make sustainability practical for everyone. We support the entire sustainability cycle: plan, implement, track achievements, and repeat for continuous improvement.

Our Mission
LEO is dedicated to advancing sustainability by leveraging innovative tools and information to motivate the competitive market. By utilizing an interdisciplinary approach to sustainability strategies, education, and implementation, we strive to make sustainability practical for everyone.
We develop integrative sustainability solutions designed to enhance the environmental stewardship, social responsibility and economic prosperity of organizations, corporations and individuals. We see a world filled with sustainable opportunities that can transform the way we live today and ensure the prosperity of future generations.
Sustainable Buildings
LEO's Green Building Program supports the development and implementation of metrics, tools and training for green buildings.
Emissions Reduction
LEO provides comprehensive emissions services that help companies and organizations understand, quantify, manage and report their emissions.
Sustainable Transportation
Our program is designed to move the transportation industry and employers toward higher performance in the areas where transportation has the greatest impacts.
Sustainable Agriculture
The objective of the sustainable agriculture standard-setting initiative is to establish a framework and metrics to determine whether an agricultural crop has been produced and handled in a sustainable manner.
"If we worked on the assumption that what is accepted as true really is true, then there would be little hope for advance."
-Orville Wright
Our Story

Core Strategies
LEO's core strategies are to advance sustainability by making sustainability actions practical, create a broad understanding of sustainability actions, and engage the competitive market in driving increased sustainability and environmental improvement.
We do this by: (1) Providing consumers with information and tools that make it easy for them to make choices in their daily lives that promote sustainability, including making “green” purchasing decisions ; (2) Providing companies and organizations with information and tools that make it easy for them to make choices that promote sustainability, including making purchasing decisions that reduce the emissions associated with their supply chain, documenting their sustainability achievements, and communicating this to customers and potential customers.
Founding
LEO is a charitable 501(c)(3) nonprofit organization that was founded in 1997 by its president, Michael Arny, to advance sustainability and environmental improvement. At that time, Michael Arny was the Co-Chair of the Wisconsin State Committee, which had developed a state-wide emissions inventory and reduction cost study that covered all emissions sources in Wisconsin, including those that affect climate and human health. This study documented the need for action to reduce emissions and the tremendous practical opportunities that exist for reducing these emissions.
Having been a utility regulator for 14 years, Michael recognized the need for the competitive market to work on achieving environmental objectives in addition to legislation and regulation; hence, LEO was created. Since that time, LEO has worked on a broad range of interconnected environmental and sustainability issues, including emissions, building efficiency and emission reductions, transportation and agriculture.

LEED O+M CERTIFICATION
Our history demonstrates our commitment to and knowledge of sustainability, emissions reduction, and green building. Putting all of these under a single standard for emissions reporting only seems natural. Whether you want to find out the environmental and health impacts of your organization, product, event, or anything in-between, the Cleaner and Greener® standard is the most accurate, environmentally responsible framework you can choose.
Give the Gift
Of a Sustainable Future
Credits to Deane and Edith Arny - Donators of Valley Ridge Preserve – LEO’s
Building a
Sustainable World
Since LEO's founding in 1997, we have successfully extended our reach to advance sustainability and improve the environment in buildings, organizations, events, transportation, and more. But the challenges we face are great and there is much more to be done. LEO is vigorously engaged in addressing these challenges to transform the way we live today and ensure the prosperity of future generations.
We helped write the book on sustainable buildings,
now let us write the book for yours.
LEO's team of experienced sustainability professionals can help you achieve your building sustainability objectives. Whether your organization is just exploring sustainability or has an established program in place, we can provide a practical path to sustainability.
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General Questions
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