The Balearic Islands has pledged to become 100% green by 2050, including phasing out all diesel and petrol vehicles.
The government says the islands will derive all of its energy from renewables - and cut carbon dioxide emissions completely over the next three decades.
Lawmakers this week outlined an ambitious environmental programme covering energy, waste, emissions and protection of biodiversity.
These include a new legal framework for protection of its Posidonia - or seagrass - reef, vital to its marine biology.
Transport minister Marc Pons is targeting a 40% reduction in CO2 emissions by 2030 and a 100% reduction by 2050.
Additionally, Pons said the Balearics would seek to source 35% of its energy from renewable sources by 2030 and 100% by 2050.
New laws and guidelines, applicable to the public and private sector, include installing solar panels on car parks, new builds and industrial units of more than 1,000sq/m, ensuring councils identify land or sites for renewable energy sources, and requiring former farm buildings no longer used for agriculture to become energy self-sufficient.
Other objectives include closing or converting all “contaminating” power plants and replacing all public lighting with LED lighting over the next five years.
By 2025, the Balearics will ban diesel vehicles entering the islands and petrol vehicles by 2035. All hire vehicles will be required to be electric by 2050.
Medium and large businesses, meanwhile, will be required to calculate and register their carbon footprint by 2025 and present plans to reduce CO2 and waste.
The Balearic Institute of Energy will embark on a public education programme and encourage people to become involved in renewable energy programmes.