General info
http://www.eren.doe.gov/RE/solar_hotwater.html
http://www.eren.doe.gov/solarbuildings/hotwater.html
 

Fact sheet- North Carolina
http://www.ncsc.ncsu.edu/fact/04body.htm

Financing Energy Projects
http://www.theenergyguy.com/Financing.html

Solar Water Heating Facts sheet
http://www.theenergyguy.com/solarwaterheating.html

General Info.  CALSIEA
http://www.solardev.com/SEIA-sunshinehomes.php

Water heating info:
http://tristate.apogee.net/res/rewhsol.htm

Sustainable Building Sourcebook-  good general info on solar water heating, references
http://www.greenbuilder.com/sourcebook/heatcool.html

Solar Water heating info: (state of Vermont) good overview
http://www.rerc-vt.org/solarbasics.htm
 

Solar Equipment for sale (Jade Mountain)
http://www.jademountain.com/pdfSpecs.html

Renewable Energy Financial Incentives in California
Community Investment & Awareness Programs
Rules, Regulations & Policies
http://www.dcs.ncsu.edu/solar/dsire/state.cfm?Abbreviation=CA&back=fintab

California - Solar Energy and Distributed Generation Grant Program
http://www.dcs.ncsu.edu/solar/dsire/incentive.cfm?Incentive_Code=CA26F&state=CA

Do it yourself batch heater plans
http://www.dulley.com/docs/f832.htm

Solar Depot- online catalog
http://www.solardepot.com/photovoltaic_pvcatalog/solar_electricity_domestic_hot_water.htm

Sacramento Municipal Utility District
http://www.smud.org/solarwaterheating/solarH_features.html

Solar swimming pool heaters
http://www.eren.doe.gov/solarbuildings/pools.html

solar swimming pool manufacturer 
http://www.fafco.com/
 

Home Power Magazine
http://www.homepower.com/