Supplying sustainable energy in cities is becoming increasingly crucial. Energy security, affordability and environmental impact need to be carefully balanced.

Due to climate change and limited fossil fuels supplies, renewable energy sources are gaining in importance. Siemens offers green solutions such as photovoltaics, solar thermal power plants, and different types of wind turbines.

Combined heat and power plants (CHP) are among the most efficient methods of converting fuel into power and heat. With efficiency rates of up to 95 percent, these systems are both cost effective and environmentally friendly. Combined cycle power plants offer another highly efficient way to generate energy.

Smart grids are necessary to integrate the often fluctuating amount of “green” power into the grid in a smart and energy-efficient way. Smart grids enable low-loss transmission and cut CO2 emissions because less power needs to be generated. To transmit power across large distances, high voltage direct current (HVDC) is the most efficient and environmentally friendly way.