evidence: The challenge was to help young, low-income renters save money on their electricity bills by improving their energy efficiency behaviour. To solve this challenge, CitySmart and QUT worked with Brisbane-based marketing agency BCM Partnership and developed Reduce Your Juice – a unique behaviour-change program, combining mobile games, SMS and social media in a digital approach to help the target market implement simple ideas to save electricity and reduce their electricity bills. [...] - 12.3% improvement in energy consumption on previous year - $54.82 average saving on quarterly electricity bills ($219.28 annual saving) - 22.5% improvement in energy habits - 78% of starters completed the program - 97.2% recommended RYJ to friends and family - Significant improvement in attitudes, bill control, self-efficacy.