- Public services such as citizen services, tourist services, public transportation, identity and administration, and information services.
- Public safety where we can find applications in areas such as smart lighting, environmental monitoring (remember the flood network), asset tracking, policing, video surveillance and emergency response.
- Sustainability, including environmental monitoring, smart waste management and recycling, smart energy, smart metering, smart water, etc.
- Infrastructure with, among others smart infrastructure, structural health monitoring of buildings and monuments, smart buildings, smart irrigation (for instance in parks) etc.
- Transportation: smart roads, connected vehicle sharing, smart parking , smart traffic management, noise and pollution monitoring, the list goes on.
- More integrated solutions for smart city functions and services in areas such as smart care, smart education, smart governance, smart planning and smart/open data, which is also a critical smart city enabler.
Pilot projects have shown that powering local transport systems with renewables can be cost competitive. In New Delhi, India, the government-owned Delhi Metro Rail Company (DMRC) has commissioned 20 MWp of solar rooftop installations on metro stations and other buildings. Solar
electricity is expected to cost less than the power supplied to DMRC by distribution utilities. The solar deployment will result not only in financial savings but also create 34 jobs per installed MW. With a 50 MWp target, solar PV is expected to allow the Delhi Metro Rail system to become climate-neutral
Integrated planning enables cities to pursue more ambitious renewable energy targets. Malmö, Sweden, for example, was sourcing all energy for municipal operations (such as city-owned buildings, city vehicle fleets and city-owned power-generation assets) from renewables by 2015. By 2016, renewables accounted for roughly one quarter of energy use within the municipality as a whole, putting the city on on track to reach 100% by 2030. Vancouver, Canada, meanwhile, has committed to sourcing 100% of its energy consumption from renewables by 2050. Vancouver integrates its renewable energy targets within existing sectoral strategies, including its Zero Emissions Building Plan, the Neighbourhood Energy Strategy, and the Transportation 2040 Strategy. In 2016, Vancouver achieved a 30% share of energy derived from renewable sources.
Reliable public lighting improves safety and navigation in cities but also contributes to local energy consumption and GHG emissions. Sydney, Australia, has substantially benefitted from measures to introduce energy efficient public lighting, which previously accounted for one third of municipal electricity consumption. Since the publication of an initial IRENA/ICLEI case study of Sydney in 2013, the replacement of conventional light bulbs with energy-efficient LED street lights has resulted in annual savings of USD 1.3 million in electricity and maintenance costs, as well as in saving 2.8 million kilowatt hours of electricity use.