UNSW researchers have turned ash waste from coal-fired power stations into an environmental solution which could slash emissions in the carbon-hungry construction sector by at least 20 per cent.

German Greens MP Hans-Josef Fell will speak at UNSW on May 14 about the successful impact of feed-in tariff incentives in raising the demand for renewable energy.

Twenty craftspeople in rural Philippines will benefit from a UNSW community outreach project.