Energy Saving in Global Production
Most of the CO2 emissions in the manufacturing process come from the consumption of energy generated with fossil fuels. We are engaging in a variety of energy-saving activities in manufacturing our vehicles.
In production technology, the company is introducing highly efficient equipment, improving manufacturing techniques and adopting energy saving lighting. Another key approach is Nissanís three-wet paint process. Approximately 30% of all CO2 emissions from plants come from the painting process. Shortening or eliminating baking stages within this process brings about a reduction in emissions.
The three-wet paint process adopted by Nissan removes the need to bake in between the primer layers and the topcoat layers. Instead, the layers are applied successively before baking, achieving a reduction in CO2 emissions of more than 30%, according to Nissan calculations. In 2013, the company introduced this process in Nissan Motor Kyushu Co., Ltd., the Smyrna Plant in the U.S., the second Aguascalientes Plant in Mexico (which started operations in November 2013) and the Resende Plant in Brazil (which started operations in February 2014) . At the Kyushu plants, the company was able to adopt the three-wet process with no shutdown of production lines and successfully shorten total production time.
Nissan plants use finely controlled lighting and air conditioning for low-energy-use, low-loss operations. The company is promoting CO2 emission reduction activities and introducing cutting-edge energy conservation technology from Japan in its plants worldwide. Meanwhile, Nissan plants in all countries learn and share best practices with each other. In addition, Nissan Energy Saving Collaboration (NESCO) surveys energy loss at the plants and propose new energy-saving countermeasures. These proposals could amount to a potential reduction in CO2 emissions of 53,754 tons in fiscal 2015, according to Nissan calculations. A NESCO team was established for Japan in 2003, and teams for Europe, North America and China in 2013.
In fiscal 2015, CO2 emissions per global vehicle were approximately 0.57 tons, a reduction of 22.3% from the fiscal 2005 level.
Introducing renewable energy
We are promoting the use of renewable energy sources appropriate to the location of each of our global plant sites. Since 2005, we have installed 10 power-generating wind turbines on the grounds of Nissan Motor Manufacturing (UK) Ltd., which together provide about 5% of the electricity used at the entire site. In Japan, Nissan is co-sponsoring the city of Yokohama's Y-Green Partner program for wind power generation. In addition, at the Zama Operation Center in Japan Nissan is developing small-scale hydropower generators, capable of creating around 0.5 kW of power from a drop of 2.5 meters from drainage pipes, and testing their usage in production plants. Nissan Motor Iberica, S.A. in Spain has set up solar energy panels. Nissan Mexicana, S.A. de C.V. in Mexico has installed facilities to produce hot water by solar power at its Cuernavaca Plant, and also started using energy generated from biogas in 2012, and wind power in 2013 in its Aguascalientes assembly plant, raising its renewable energy use ratio to 50%. In other words, starting in 2013 one of every two Nissan vehicles produced in Aguascalientes is assembled using sustainable resources.
Power-generating wind turbines introduced on the grounds of Nissan Motor Manufacturing (UK) Ltd. in 2005
Nissan is a partner in the "Yokohama Large-Scale Wind Power Project" in the city of Yokohama, Japan, and purchases energy generated there.
Solar energy panels set up at the Nissan Motor Ibérica, S.A. (Spain) production plant. These panels were put into operation in May 2007, marking the first attempt by an automobile company in Europe to use solar energy.