VOLume 24, NO. 9 NOVember/December 2010 sOLartODay.Org
22 The Clean Snowmobile
By Tracy Dahl
An electric snowmobile competition helps meet the
need for a zero-emissions workhorse in the Arctic.
26 Greener Buildings,
By Richard Crume
By consuming less energy, green buildings help
reduce harmful air pollution.
30 GET STARTED | Optimizing for
By Gary Klein
What’s the best supplemental heater? We look
at the issues and options, concluding this
t wo-part series.
36 A Solar Campus in the
By Mike Koshmrl
St. John’s University’s 400-kilowatt solar farm is
both a demonstration of the potential for solar in
Minnesota and a tool for educators.
ON THE COVER: Dr. Derek Larson of St. John’s University uses the photovoltaic (PV) system installed on the Collegeville, Minn., campus to help
students understand the economics, policy drivers and land-use implications of renewable energy. The system is proving large-scale PV in a state
with a solar resource comparable to that in parts of Florida. PHOTO COURTES Y
OF PAUL MIDDLESTAEDT.
Articles appearing in this magazine are indexed in Environmental Periodicals Bibliography and ArchiText Construction Index: afsonl.com.
40CASE STUDY | Solar Water
Heating Cuts Costs for
By Linda Erkelens
A San Francisco couple stabilized their utility costs
with four rooftop water-heating arrays.
42 Achieving Solar Thermal
By Katrina Phruksukarn and Jordan Iantorno
California has launched a carefully crafted plan
to promote solar water heating.
Next Issue: The BIPV Passive Solar House The South’s
first certified passive solar house also uses building-integrated
photovoltaic (BIPV) laminates, reducing energy usage 90 percent over
homes built to code. The result: an affordable net-zero-energy model
for the extreme conditions of hot, humid Louisiana or anyplace else.