In the battle against climate change, cities will play a decisive role. Without a targeted policy for cities to reduce their greenhouse gas emissions, climate mitigation policies cannot be successful.
In December 2013, after only nine months of construction, the Gonghe PV solar park was commissioned and connected to the power grid via the nearby Longyangxia hydropower plant on the Yellow River. This marks the first commercial operation of a large-scale solar PV–hydro hybrid system.
The renewable energy resources biomass, geothermal, hydro, solar, wind, etc. depend on certain weather, geographic, geological and other conditions – combining them by using synergy effects and strengths of certain technologies can thus lead to more successful projects.
El Hierro, the westernmost of Spain’s Canary Islands, located in the Atlantic Ocean, is using a wind/hydro hybrid system to move towards a 100 per cent renewable energy supply.