Welcome to Sustainable By Design!

Sustainable By Design is the consulting firm of Christopher Gronbeck, Seattle, Washington, USA.

Christopher provides solar engineering, green building consulting, graphic design, and web site design and programming services, primarily within the sustainable energy and architecture fields.

What would you like more information about?

SunAngle Software

Christopher's premiere solar design tool is SunAngle, a shareware program used around the world since 1995 to calculate solar angles based on location, date, and time. SunAngle runs directly in your web browser.

A more sophisticated version of SunAngle is also available for purchase. The SunAngle Professional Suite includes additional features, thorough technical documentation, and full technical support. It's available for sale on CD-ROM or by e-mail delivery.

FEATURED TOOL

Light Penetration

A new tool to help you visualize the penetration of sunlight into a room.