Osamu Kumasaka

Junior Associate

Osamu Kumasaka is a Junior Associate at the Consensus Building Institute with experience in energy and environmental policy analysis. He works with senior staff to research, design, convene, and facilitate collaborative problem-solving processes for public disputes.

Osamu, or Sam, worked in the environmental non-profit sector prior to joining CBI. Sam directed engagement with public utilities at MPower Oregon to fund energy efficiency projects in multi-family affordable housing developments. Prior to this, he supported policy campaigns at the Grand Canyon Trust and Renewable Northwest. During this time, he authored several articles on the regional implications of the EPA Clean Power Plan ruling. While earning his undergraduate degree at Lewis & Clark College, Sam traveled to Swaziland to design and carry out a community-based environmental health survey of rapidly urbanizing neighborhoods, as well as working with the school's Sustainability Council and chairing the annual Environmental Affairs Symposium.


Natural resource and environmental management, climate change adaptation, renewable energy development conflict, social policy and cultural resources, international development, and non-profit stakeholder engagement.


Osamu holds a B.A. in Environmental Studies from Lewis & Clark College, with a major concentration on Renewable Energy Policy and a minor in Economics.