Global Warming Prevention through Energy Conservation The takes an active part in semiconductor industry initiatives to help prevent global warming. We also work continuously to conserve energy in a number of ways to meet electrical and electronic industry association targets and emissions intensity reduction targets under the Law Concerning the Rational Use of Energy. Reducing Energy The began participating in the Commitment to a Low Carbon Society, an effort of the electrical and electronic industry, in fiscal 214. Under the commitment, the baseline value for a business is the value for fiscal 213 and its target is to reduce energy consumption from the baseline (of fiscal 213) by an average of 1% per year through fiscal 221 (7.73% decrease compared to the value in fiscal 213). Results of Fiscal 216 Reductions As of fiscal 216, we have reduced energy use by 26% from the benchmark year. This is a 1 point reduction over the previous fiscal year (fiscal 215). Because the electric power supply is forecast to remain tight in fiscal 217 and beyond, we will continue to actively take measures that focus on Energy consumption per unit sales Target line Baseline value: Fiscal 213 energy consumption per unit sales (kl/billion yen) Energy consumption per unit sales from fiscal 214 to 216 12 Energy consumption per unit sales (Relative) 11 1 9 8 7 13 14 15 16 17 18 19 2 21 energy conservation as we strive to cut CO2 emissions. We will continue the fight against global warming through our membership in the Commitment to a Low Carbon Society, a group in which the electrical and electronic industry associations participate. Energy Reduction on Production Lines We are also working toward achieving our energy conservation target under the Law Concerning the Rational Use of Energy, and therefore on our production lines we seek to reduce the rate of energy consumption by 1% year on year. Specifically, we have systematically taken such measures as putting air conditioners, pumps, fans, etc. under inverter control, replacing lighting with LEDs, and chillers and boilers with energy-saving models. We are also optimizing equipment operation based on our production volume. Major Measures Taken in Fiscal 216 Renesas Electronics accounts for energy conservation effectiveness and investment effectiveness, giving priority to implementing effective measures. Major measures taken in fiscal 216 included the following. Replacing lighting with LEDs Making air-conditioning systems more efficient Making freezers more efficient Enabling pumps to conserve electric power Energy usage reduction through the fitting of inverters to clean room circulating air conditioners (Saijo Factory) We reduced the amount of air circulated by 5% by fitting inverters to circulating air conditioners in clean rooms. 7
Reducing GHG Emissions The uses PFC* 1 gas, which is a greenhouse gas, primarily as a reaction chamber cleaning gas for semiconductor production processes. These gases do not readily decompose, and since their global warming potential (GWP* 2 ) is between 7, 2, or even higher, it is critical to reduce these emissions. The Group has therefore set PFC gas emission reduction targets and is actively working to help prevent global warming. Methods of reducing the greenhouse effect of PFC gases include 1) switching to gases with a lower GWP, 2) optimizing processes to reduce the volume of PFC gases used, and 3) installing abatement systems that remove PFC gases to break them down. The Group has been developing technology to cut emissions to 9% or lower in 21 as compared to 1995, using a combination of these three techniques. In 215, we continued working toward that target as we engaged in reduction initiatives. While production volume did have an effect, emissions were kept to only about 2% of the 1995 level. Thanks to our ongoing reduction initiatives, we have achieved our reduction targets since 28 and are steadily cutting emissions of greenhouse gases. We will pursue further emissions reductions in 216 and beyond. *1:Perfluorocompound (The semiconductor industry has specified CHF3, CF4, C3F8, C2F6, C4F8, SF6 and NF3 for emissions reduction.) *2:Global warming potential, a coefficient indicating how much a given mass of greenhouse gas is estimated to contribute to global warming (CO2=1) GHG Emissions Reduction Image PFC Gases Purchase Volume and Emissions Trends (%) (%) 2 2 Amount Purchased (Relative) Use Alternative Gases Use gases with a lower GWP 15 1 5 Container Container PFC Gases and GWP PFC gas Reduce PFC Use Reduce PFC use by optimizing production processes GWP* CF4 7,39 C2F6 12,2 C3F8 8,83 C4F8 1,3 CHF3 14,8 SF6 22,8 NF3 17,2 *26 IPCC Guidelines Reaction chamber Vacuum pump PFC Gases Subject to Reduction s Gases subject to reporting under the Act on Promotion of Global Warming Countermeasures CO2 (carbon dioxide) CH4 (methane) N2O (nitrous oxide) HFC (hydrofluorocarbon) PFC (perfluorocarbon) SF6 (sulfur hexafluoride) NF3 (nitrogen trifluoride)* 1 *1 NF3: Subject to reporting from fiscal 216 PFC Gases Purchase Volume Trend Use PFC Abatement Systems Break down PFCs into gases with a lower GWP Abatement system PFC Gases Emissions Trend Target (9% or lower as compared to 1995) 15 1 5 Discharge into the atmosphere Seven gases subject to reduction by the semiconductor industry Controlled as CO2 attributable to energy use Not covered Not covered CHF3 CF4 C2F6 C3F8 C4F8 SF6 NF3 Emissions (Relative) 95 1 11 12 13 14 15 (Year) 8
Chemical Substance Management The Group conducts various assessments of the chemical substances it uses, based on its chemical substance database compiled through green procurement activities and the acquisition of information about related laws and regulations. The Group strives to accurately understand and reduce the total volume of chemical substances used and manages the volume of hazardous chemical substances used and their emissions. In this manner, we are pursuing research and development for green products and eco-factories. Under risk management, we practice material-balance management without rounding down figures on the amount of PRTR* 1 -regulated chemical substances and VOCs* 2 we handle. The results of this material-balance management are reported to the relevant authorities, and are also analyzed and utilized in our activities to promote the use of alternative substances and reduce chemical substance emissions. *1: Pollutant Release and Transfer Register Law (A law concerning the monitoring of emissions of specified chemical substances into the environment and their management) *2: Volatile organic compounds Fiscal 216 Balance of PRTR-Regulated Chemical Substances Total Volume of Chemical Substances Handled 1,466t(1,64t) Numbers in parentheses are fiscal 215 balance results. Results are rounded to the nearest ton. Detoxification/Removal 669t(727t) Emissions into the Atmosphere 19 t(25t) Used in Products 82t(8t) Rivers Sewage Systems Waste* 3 (Valuable Resources Only) Recycling 41t(44t) 1t(1t) 322t(371t) 332t(357t) Reducing VOC Emissions In the, VOCs such as isopropyl alcohol and xylene are released from factories only after they have been rendered as harmless as possible by equipment that processes organic gas emissions. Along with this, we optimize production processes and use production equipment effectively as we endeavor constantly to lower VOC emissions. Fiscal 216 VOC emissions fell substantially compared to fiscal 21, by about 29%, showing that our measures so far are steadily paying off. Going forward, we will continue our proactive efforts to cut VOC emissions, which includes further optimizing production processes. VOC Emissions Trend (%) 12 VOC emissions rate (relative) 1 8 6 4 2 1 11 12 13 14 15 16 *3: Includes waste for recycling at the Company s expense. 9
Conserving Water Resources The is conserving water by actively recycling and reusing it. In fiscal 216, total water consumption was 27,32,m 3, of which we recycled 42.1%. Moreover, the amount of water taken from the water supply was down 14.4% compared to fiscal 215. Domestic Water Consumption and Recycling Rate Volume of water recycled Volume of water procured externally 6, Water recycling rate 6 5, 5 4, 4 3, 3 2, 2 1, 1 1 11 12 13 14 15 16 Total volume of water required (1, m 3 /yr) Total volume of water required = volume of water recycled + volume of water procured externally Water recycling rate = volume of water recycled total volume of water required 1 in Logistics Operations The implements various environmental measures in its logistics operations. Specific measures include the reduction of energy used for the transport of products and waste, reduction and reuse of product packing materials, and switching to eco-friendly company vehicles. Pursuant to the revision to Japan s Law Concerning the Rational Use of Energy, which stipulates Specified Consignor obligations, the Group is striving to reduce CO2 emissions in its logistics operations. In fiscal 216, the Group reorganized manufacturing sites and warehouses in Japan. As a result, our domestic shipping volume declined 1.4% from the previous year. We will continue our efforts to reduce energy use in logistics operations in fiscal 217 and beyond. Domestic shipping volume Fiscal Year Renesas Electronics Totals for Each Group Company 212 12.55 million ton-km 7.22 million ton-km 213 11.78 million ton-km 6.69 million ton-km 214 8.62 million ton-km 5.66 million ton-km 215 7.65 million ton-km 5.5 million ton-km 216 6.36 million ton-km 5.2 million ton-km Water recycling rate (%) Waste Management The s waste management target for fiscal 216 was to maintain our zero-emissions status (landfill disposal ratio of less than 1%). We were able to realize this goal with a landfill disposal ratio of.14%, and thus achieved zero emissions. Additionally, we practiced strict legal compliance and continued to periodically visit our industrial waste processing contractors to ensure that they were processing waste appropriately. The Group practices strict storage, management and reporting of equipment that uses PCBs, in accordance with the law. Furthermore, we aim for complete disposal in a safe and secure manner within the legally mandated period. We are promoting disposal according to the basic policy of the Japanese government, through entrustment of disposal of high-concentration PCB waste to the Japan Environmental Storage & Safety Corporation (JESCO), and entrustment of disposal of waste containing low concentrations of PCB to accredited detoxification facilities. Domestic Waste Generation and Landfill Disposal Ratio Waste generation (tons/yr) 5, 4, 3, 2, 1, Waste generation Landfill disposal ratio 5 1 11 12 13 14 15 16 4 3 2 1 Landfill disposal ratio (%) 1
Protecting the Ozone Layer The Montreal Protocol on Substances That Deplete the Ozone Layer classifies ODSs* 1 into Class I (CFCs* 2, etc.) and Class II (HCFCs* 3 ). The Group has completely eliminated the use of all of these from our production processes. Furthermore, we are systematically reducing the use of CFCs used as refrigerants in chillers, refrigerators, air conditioners and other equipment and replacing them with alternative substances in line with Montreal Protocol program. We are also recovering ODSs when affected equipment is scrapped and making sure these substances are destroyed. *1: Ozone-depleting substances *2: Chlorofluorocarbons *3: Hydrochlorofluorocarbons Overseas s The s overseas manufacturing sites conduct environmental initiatives using ISO 141 environmental management, based on the Group s Environmental Policy. Each manufacturing site sets its own targets and specific measures in accordance with local legal regulations and industry initiatives. Examples of Overseas s Renesas Semiconductor (Beijing) At Renesas Semiconductor (Beijing) Co., Ltd., we conducted a tour of the Beijing Gaobeidian Wastewater Treatment Plant in June 215, and gained an understanding of the sewage treatment process. Through this tour, we learned about the importance of every drop of water. We will treat what we learned during this tour as a lesson and conduct environmental conservation accordingly. Renesas Semiconductor (Malaysia), Renesas Semiconductor (Kedah) In March 216 Renesas Semiconductor (Malaysia) Sdn. Bhd. and Renesas Semiconductor (Kedah) Sdn. Bhd. jointly participated in the sea turtle education program at the Turtle Hatchery Center at Pantai Kerachut, which is located in the Penang National Park. We learned about the importance of conservation of the environment, such as biodiversity, through the example of sea turtles, which are an endangered species. Preventing Soil Pollution The Group is conducting initiatives to avoid soil pollution. Major initiatives conducted in fiscal 216 are listed below: Installation of water surface monitors in organic waste liquid tanks Raising wastewater tanks above ground level Enhancing leak prevention measures in wastewater pipes Example of s to Enhance Leak Prevention Measures in Wastewater Pipes (Saijo Factory) We have achieved visualization of piping by laying discharge pipes in concrete troughs. This construction not only makes it easier to monitor pipes, but if a pipe happens to break, there is no direct penetration underground. Visible factory wastewater pipes 11