Open call for innovative ideas to make Limerick city 'Energy Positive' Reporter: '); '); THE leaders of the +CityxChange project in Limerick are running an Open Call to the public, looking for innovative ideas to improve how homes, businesses and residents use energy. The overall project is working to develop areas of 'positive energy' in Limerick city which produce more energy than they consume. Limerick is one of two EU ‘lighthouse’ cities that is involved in a major climate-change pilot programme that will give a lead to the rest of Europe on how to dramatically reduce the carbon footprint of urban areas.