Promotion of Green Factories
In the production domain, Honda has aggressively reduced the use of energy and resources and made progress toward zero emissions based on the Green Factory initiative.Mid-Term Target and Progress in Achievement
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Annual Targets and Results
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* The production domain section targets the following five factories in Japan: Saitama, Tochigi, Hamamatsu, Suzuka, and Kumamoto Factories.
1. The value differs from that shown in the previous environmental annual report because the coefficient used in the fiscal 2005 calculations has been changed.
2. The value differs from that shown in the previous environmental annual report because the calculation method used in fiscal 2005 has been changed.
1. The value differs from that shown in the previous environmental annual report because the coefficient used in the fiscal 2005 calculations has been changed.
2. The value differs from that shown in the previous environmental annual report because the calculation method used in fiscal 2005 has been changed.
Mid-Term Target and Progress in Achievement
In fiscal 2005, energy consumption per unit decreased by 22.6 percent, exceeding the target of a 22.5 percent reduction from fiscal 1990 levels. • CO2 Emissions and Unit Energy Consumption
Note: Unit energy consumption values are shown in indices (FY1990: 100). We recalculated CO2 emissions in fiscal 1990 onwards using the following conversion factors.
| The following CO2 conversion factors* were used: | |
| Electricity | 0.378 (CO2-ton/MWh) |
| City gas (13A) | 2.330 (CO2-ton/1,000 Nm3 |
| Kerosene | 2.489 (CO2-ton/kL) |
| Light oil | 2.619 (CO2-ton/kL) |
| Gasoline | 2.322 (CO2-ton/kL) |
| LPG | 3.000 (CO2-ton/ton) |
Electricity: Factor designated in the Ministry of the Environment’s guidelines for calculating greenhouse gas emissions (V. 1.6)
Fuels: Factor to be used in the announcement system established under the Law concerning the Promotion of Measures to Cope with Global Warming for fuels
Fuels: Factor to be used in the announcement system established under the Law concerning the Promotion of Measures to Cope with Global Warming for fuels
Energy saving
CO2 emissions attributable to energy used in production totaled 470,000 CO2-tons, up 3.1 percent from our target of 456,000 CO2-tons (down 20 percent from fiscal 1990) and up 2.2 percent from fiscal 2004 levels of 460,000 CO2-tons.Although a number of measures were implemented in fiscal 2005 (see below), total emissions rose due to increased production and the influence of the weather.
To further reduce energy consumption, Honda will promote further energy conservation, introduce new energy sources, and efficiently control energy use through LCA activities.
• Main Energy-Saving Measures• Introduction of highly efficient freezing machines• Distributed use of smaller boilers • Introduction of highly efficient compressors • Energy saving by discontinuing the use of lubricated coating • Reduction in air leaks • Optimization of coating booth temperature |
• Transition in Production Output in Japan
* Starting from fiscal 1999, ATV’s, which were previously classified as a products, have been reclassified as a motorcycles.
• Breakdown of Energy Use (in CO2 equivalent)
Note: For energy input, please refer to the Flow of Materials diagram.
Introduction of new energy sources
Power generation in the production domain using new energy sources totaled 79.5 million kWh in fiscal 2005, accounting for approximately 10 percent of total electricity consumption. • Power Generation Using New Energy Sources
Note: Solar power generation and natural-gas cogeneration as defined in the New Energy Law (Law concerning Special Measures to Promote the Use of New Energy) of Japan are targeted as new energy types.
Greenhouse gas emissions
In fiscal 2005, greenhouse gas emissions in the production domain totaled 482,000 tons in CO2 equivalent.• Greenhouse gas emissions
| • CO2 emissions from energy consumption and waste incineration: | 472,000 CO2-tons |
| • Emissions of greenhouse gases other than CO2: | 10,000 CO2-tons |
Note: Greenhouse gas emissions were calculated according to the guidelines provided by the Ministry of the Environment. The greenhouse gases include CO2, CH4, N2O, HFC, PFC, and SF6.
Resource saving (water use)
Water used in the production domain increased 1.5 percent to 71,000 m3 compared with fiscal 2004 levels. The unit water consumption index decreased 2 percent from fiscal 2004 (down 16 percent from fiscal 2000) due to the influence of increased production, weather factors, and the following water saving measures. • Water Consumption and Unit Water Consumption Index
• Recycling of cooling water used in the forging process
• Water reduction by discontinuing the use of lubricated coating
Note: Unit water consumption values are shown as indices (FY 2000: 100).
• Water Saving Measures Taken in Fiscal 2005
• Collection of water that overflowed from cooling towers• Recycling of cooling water used in the forging process
• Water reduction by discontinuing the use of lubricated coating
Reduction in waste (by-products)
All domestic factories continued their zero off-site landfill achievement from the previous fiscal year through fiscal 2005. In addition, we are making efforts to reduce the total amount of by-products and the amount of waste incinerated. The amount of waste incinerated was approximately 2,100 tons in fiscal 2005, down 85.7 percent, achieving the Company’s target of an 85 percent reduction from fiscal 1998 levels. We will further reduce waste incineration by improving waste segregation and aggressively reducing the total amount of by-products—notably by preventing their generation at the source. • Weight of Internally Incinerated Waste and the Recycling Rate
• Breakdown of Waste Associated with Production Activities
| Type | Fiscal 2003 |
Fiscal 2004 |
Fiscal 2005 |
| External landfill | 0.00 |
0.00 |
0.00 |
| Intermediate external disposal | 0.11 |
0.10 |
0.02 |
| Internal incineration | 5.81 |
4.38 |
2.12 |
| Internal concentration | 4.37 |
6.03 |
6.91 |
| Recycling | 170.58 |
177.97 |
189.92 |
| Total amount of by-products | 179.47 |
187.42 |
198.44 |
* Excluding burnt residues
The plan for reducing the generation of byproducts, based on the Law concerning the Promotion of the Utilization of Recycled Resources, sets the target for fiscal 2006 as shown in the upper right graph. The unit generation of byproducts increased 3 percent over fiscal 2004 levels. Although we implemented measures to improve the production process yield, the generation of byproducts rose because of increased production and the use of a greater number of parts. Compared with the fiscal 2001 level, the generation of byproducts decreased 1 percent. We will take further measures in such areas as improving the production process yield.
• Unit Generation of Byproducts Shown in the Form of Indices (FY 2001:100)
Note: The values have changed because the recycling flow was partially changed.
Prevention of air and water pollution
Gas emissions from combustion systems and factory wastewater are closely monitored to maintain air and water quality at the level of our voluntary standards, which are more stringent than regulations. (For specific measurement results, refer to “Data of Japanese Factories”.)Volatile organic compounds (VOC)*
The major source of VOC emissions is solvents used in the automobile painting process. In fiscal 2005, we measured VOC emissions at the Saitama, Suzuka, and Tochigi Factories. The average VOC emissions from these factories were 34.3 g/m2, achieving Honda’s previously-established emission targets. The following measures have been implemented by these factories:We will further reduce VOC emissions by such measures as expanding the use of water-based paints.
• VOC Reduction Measures Taken in Fiscal 2005
• Exhaustive reduction in waste and loss (improvement in the recovery of thinners for cleaning, etc.)• Improvement in coating efficiency
• Further promotion of water-based paints
• VOC Emissions from 1 m2 of Coating
Note: We changed our method of calculating VOC emissions to one based on the manual published by Japan Automobile Manufacturers Association, Inc., (JAMA) in November 2005 and recalculated figures for fiscal 2000 onwards.
* VOCs mainly consist of organic solvents contained in paints and adhesives. VOCs remain toxic for a long time, and cause the depletion of the ozone layer in the stratosphere and photochemical smog in the troposphere. Therefore, VOCs are regulated in many countries around the world.
* VOCs mainly consist of organic solvents contained in paints and adhesives. VOCs remain toxic for a long time, and cause the depletion of the ozone layer in the stratosphere and photochemical smog in the troposphere. Therefore, VOCs are regulated in many countries around the world.
Chemical emissions (PRTR)*
The charts below give statistical data for fiscal 2005 for chemical substances falling within the scope of the PRTR Law. The emission levels discharged into the air/hydrosphere amounted to roughly 1,923 tons, down 30 percent from fiscal 2001 levels. Additionally, the PRTR unit emission index fell 30 percent compared with fiscal 2001.We will further reduce the use of these substances in line with measures to reduce VOC emissions.
For data on the production domain and each Honda factory, please click here.
* PRTR (Pollution Release and Transfer Register) system: law concerning the reporting of specified chemical substances released into the environment and the promotion of improvements in their management.
•Emissions of Substances Treated under the PRTR
System and the Unit Emission Index
• Breakdown of the Emissions of Substances Treated
under the PRTR System
System and the Unit Emission Index
Notes:
1. PRTR unit emission values are shown in the form of indices (FY2001 : 100).
2. We changed our method of calculating VOC emissions to one based on the manual published by JAMA in November 2005 and recalculated figures for fiscal 2001 onwards.
1. PRTR unit emission values are shown in the form of indices (FY2001 : 100).
2. We changed our method of calculating VOC emissions to one based on the manual published by JAMA in November 2005 and recalculated figures for fiscal 2001 onwards.
• Breakdown of the Emissions of Substances Treated
under the PRTR System
