1. Australian Government, Office of the Renewable Energy Regulator (ORER), 2006. Fact Sheet, determining eligibility and renewable energy certificate (REC) entitlement for solar water heater and heat pump water heater installations. Version 2 as updated in September 2006 〈http://www.orer.gov.au/publications/swh.html〉.
2. BRANZ, 2004. Building Research Association of New Zealand, Energy Use in NZ Households, Year 8 analysis of the household energy use project (HEEP).
3. Brian Cox, 2007. Head of the NZ solar industries association personal communication.
4. Dalenbäck, J.O., Kovacs, P., 2005. Swedish solar thermal market development with investment support based on collector output: description, results and experiences up to 2004. In: Proceedings: Estec 2005.
5. East Harbour Management Services Ltd. and Energy Library & Information Services Ltd., 2002. Review of overseas initiatives that have been taken to increase the uptake of solar water heating 〈http://www.eeca.govt.nz/eeca-library/renewable-energy/solar/report/overseas-initiatives-to-increase-solar-hot-water-heating-02.pdf〉.