Hi Ray,
I can highly recommend Willoughby Council’s lighting seminar – Julien Freed is an expert in the area and has a lot of experience now with strata complexes.
There’s also a fantastic guide on Energy Efficient Lighting written by Julien and published by the Office of Environment & Heritage that you can download from http://www.environment.nsw.gov.au/business/lighting.htm
There are a number of case studies on the approaches taken in other buildings on the Green Strata and Smart Blocks sites. http://www.greenstrata.com.au/case-studies and http://www.smartblocks.com.au/case-studies
Try and take advantage of the incentives offered through the NSW Energy Savings Scheme if you upgrade your lighting. It might not be possible for small quantities, but it’s always worth asking the question. http://www.ess.nsw.gov.au
Solar systems are eligible for Small-Scale Technology Certificates (STCs). The installer normally handles these certificates, which means you get an up-front discount on the cost of your system. The rebate varies by location but is normally $500 to $600 for a one-kilowatt system. https://ret.cleanenergyregulator.gov.au/Certificates/Small-scale-Technology-Certificates/what-is-stc
You can also find more information on strata solar installations and case studies at http://www.greenstrata.com.au/topic/solar-photovoltaic-energy-production and http://www.smartblocks.com.au/what-can-i-do/install-solar/
Chris