This 36 unit building in West Mount Airy, Philadelphia, PA managed by Galman Group now has its hot water preheated by the sun, reducing gas bills for the owners, and reducing combustion emissions for all of us.
This 52 unit apartment building received a 26 panel solar hot water system projected to save the owner approximately $6,201 in fuel costs per year and provide an 18% return on investment.
UPDATE 11/09: Customer gas bill data shows savings of $540/mo. through the unusually rainy 2009 summer, extrapolating to $6,479 per year (possibly a little better savings than projected).
This 22 unit building received a 15 panel solar hot water system projected to save the owner approximately $2,875 per year in fuel costs, and produce a return on investment over of 18%.
UPDATE 11/09: 3 year averaging of customer gas bill shows actual annual savings of $2,827.