IRENA, in collaboration with the International Council for Local Environmental Initiatives (ICLEI), has produced a series of case studies on cities where local governments have successfully adopted measures to promote renewable energy and sustainability:
- Dezhou, China which has actively supported the establishment of renewable energy industries with the Dezhou Economic Development Zone for solar technology
- Chemnitz, Germany where the local government enabled the formulation of strategies to use renewable sources and in 2008 developed the Integrated Climate Protection Programme (Integriertes Klimaschutzprogramm).
- Belo Horizonte, Brazil which has reduced greenhouse gas (GHG) emission substantially and, since 2007, turning a closed landfill site into a waste-to-energy facility.
- Austin, US where the GreenChoice Program active since 2001 has stimulated the initial demand for renewable-based electricity, facilitating municipal and community procurement of renewable energy.
- Sydney, Australia, and Nagpur, India where energy efficiency and renewable energy have reduced emissions from public street lights.
- Sao Paolo, Brazil where a local regulation requires new residential, commercial and industrial buildings to install solar water heating systems (SWH) to cover at least 40% of the energy used for heating water.
- Malmo, Sweden which set targets significantly more ambitious than either the European Union target for Sweden (49% by 2020) or the national plan (50% by 2020), so that the city is expected to be climate neutral with municipal operations run on 100% renewable energy by 2030.