Green Building Library
Green Power

Sun, Wind and Water Site Evaluation and Information Resources

Renewable Resource Data Center
Solar Path Chart
Solar resource calculation program

See Sandia National Labs PV and RE equipment supplier catalogs for design information.
Figure about 225 sq.ft. of panel area per KW.

Wind Resources

Wind Energy Resource Atlas
See RE equipment supplier catalogs for measurement instruments and generator curves.
Wind speeds measured on the ground can be multiplied by 1.5 for speed at tower height.

Micro Hydro

Stream flow measurement: Run water you plan to use through a piece of pipe large enough to be the penstock. Time how long it takes to fill a 5 gallon bucket. Divide time in seconds by 5 gallons = seconds per gallon (spg). Divide 60 by spg to get gallons per minute.
Approximate microhydro power equation: Power in watts = feet of head x flow in gallons per minute x 0.18 x turbine efficiency (varies from 0.25 to 0.50; use 0.30 for rough numbers).
See RE equipment supplier catalogs for survey forms and generator curves.

Further Information

Oregon Office of Energy
loans, tax credits, technology assistance
Toll-free: 800-221-8035
Christopher Dymond: 503-378-8325
Justin Klure: 503-373-1581

Home Power magazine
one of the best RE resources!

Aprovecho Research Center
appropriate technology, efficient cooking with wood and solar
Cottage Grove, OR, 541-942-8198

American Solar Energy Association

American Wind Energy Association

Energy Efficiency and Renewable Energy Network

Renewable Energy Policy Project

Center for Renewable Energy and Sustainable Technology
Backwoods Solar Electric Systems
Northern Idaho retail sales

retail sales
Redway, CA

Solar Design & Construction
retail sales
Corvallis, OR

Eastern Oregon Solar Electric
retail sales
Prineville, OR

Copyright Alan Van Zuuk