Promotion of community environmental protection measures · Local environmental protection measures 01 Air pollution prevention measures Reducing sulfur oxide emissions (SOx) Reducing

Kansai Electric Power has adopted comprehensive e�orts to protect the environment of local communities, speci�cally by addressing air pollution, water contamination, asbestos contamination, and maintenance of biodiversity. We also take appropriate measures to prevent chemical substances from harming people and the environment.

Promotion of community environmental protection measures

Local environmental protection measures

01

Air pollution prevention measures Reducing sulfur oxide emissions (SOx)

Reducing nitrogen oxide emissions (NOx)

Eliminating soot particles

Monitoring/measuring environmental impact

Emergency response

Chemical substance control PRTR

Dioxins

Soil and groundwater contamination

Asbestos

Noise and vibration prevention

Bad odor prevention

Water pollution control In-plant wastewater measures

Heated e�uent measures

Preventing oil leakages

Our environmental initiatives

A�orestation

Power facility landscape integration

The protection of nature

E�ective utilization of heated e�uent

Harmony with the local environment

Promotion of community environmental protection

measures

At our power plants, we undertake measures based on laws, local regulations, environmental protection agreements and other rules to reduce air pollution, water contamination, noise, vibrations, and other problems. In addition, we monitor and measure the air and ocean around our power plants and carefully evaluate the environmental e�ects of our operations on the regional environment to ensure that no problems occur.

Environmental protection measures at power plants

Environmental measures adopted at thermal power stations

Loading arm

Nitrogen scrubber

Deep water intake

Oil fence

Removal of sulfur oxides

Noise prevention

Drainage treatment

Low-sulfur fuel

Heated water discharge measuresA�orestation

Heated water discharge measures

Removal of soot particles

Removal of nitrogen oxides

Underwater release

Oil leakage prevention

Ground-level density reduction measures

Switching device

Main transformer

Condenser

Boiler

Steam turbine

Generator

Green space

Centralized high smokestacks

Sulfur scrubber Electrostatic

precipitator

Heavy oil tank

General wastewater treatment equipment

02


measures

Sulfur oxides (SOx) are formed when sulfur from burning fuel combines with oxygen in the air. To reduce the volume of SOx emissions from our thermal power stations, measures we employ include the use of low-sulfur fuels and sulfur scrubbers that remove SOx from smoke.

KEPCO uses low-sulfur heavy oil, low-sulfur crude oil, and clean LNG that contains no sulfur as fuels. The combined use of the above three fuels in FY2015 totaled an equivalent in heavy oil of 14.97 million kL, about 85% of fuel for thermal power generation (in heavy oil).

Reducing sulfur oxide emissions

Air pollution prevention measures

Low-sulfur fuels

Since the 1960s we have actively engaged in R&D on sulfur scrubbers and their applications for removing SOx from smoke. As of the end of FY2015, we have eight units in operation, the equivalent of 4.95 million-kW. The expanded use of low-sulfur fuels has also contributed greatly to reductions in SOx emissions.

Japan's SOx emissions per unit of thermal power generated are signi�cantly lower than �gures for the major countries of Europe and North America (the United States, Canada, United Kingdom, France, Germany and Italy) at 0.1 g/kWh. And KEPCO's values are low in comparison to other power providers in Japan.

Sulfur scrubbers

Thermal power generation and SOx emissions

SOx emissions (10,000 tons)(GWh)

(FY)

Thermal power generated

03


measures

0.47

Nitrogen oxides (NOx) are formed when nitrogen from burning fuel combines with oxygen in the air. The higher the combustion temperature the more is released. To reduce the volume of NOx emissions from our thermal power stations, measures we employ include improving combustion methods and using nitrogen scrubbers that remove NOx from smoke.

We employ three speci�c methods to improve fuel combustion and reduce NOx: (1) two-stage combustion; (2) exhaust gas mixed combustion; and (3) low-NOx burners. We have modi�ed our boilers to be able to handle both two-stage combustion and exhaust gas mixed combustion, while also installing low-NOx burners to further reduce NOx emissions.

Reducing nitrogen oxide emissions

Improving combustion methods

Since the 1970s we have actively engaged in R&D on and applications for nitrogen scrubbers to remove NOx. As of the end of FY2015 from smoke, we have 38 units in operation, the equivalent of 18.02 million-kW. Improvements in combustion methods and the use of low-nitrogen fuels have also contributed greatly to reductions in NOx emissions.

Nitrogen scrubbers

Low-nitrogen combustion

SOx emissions per unit of thermal power generated for major countries and Kansai Electric Power

U.S. Canada U.K. France Germany Italy Japan Japan KEPCO

(FY)

(g/kWh)

Source:Overseas Emission amounts: OECD.StatExtracts; complete databases available via OECD's iLibrary Electric power generated: IEA, Energy Balances of OECD Countries 2014 EditionJapan Federation of Electrical Power Companies of Japan (10 electric power companies and Electric Power Development Co., Ltd.)

We use clean LNG, a low-nitrogen fuel. In FY2015, we used a heavy-oil equivalent of 11.42 million kL in LNG−approximately 64% of the fuel used for generating thermal power.

04


measures

12

1.1

2.4

1.0

2.0

0.7

0.3 0.2 0.1 0.055

12 12 12 12 12 12 15 15

0.74

86,631

NOx emissions per unit of thermal power generated for major countries and Kansai Electric Power

Japan's NOx emissions per unit of thermal power generated are signi�cantly lower than �gures for the major countries of Europe and North America (the United States, Canada, United Kingdom, France, Germany and Italy) at 0.2 g/kWh. And KEPCO's values are low in comparison to other power providers in Japan.

Thermal power generated and NOx emissions

All boilers burning heavy oil, crude oil, and coal as fuel are �tted with high-performance electrostatic precipitator to rigorously minimize soot particles.

Measures to reduce soot particles

Source:Overseas Emission amounts: OECD.StatExtracts; complete databases available via OECD's iLibrary Electric power generated: IEA, Energy Balances of OECD Countries 2014 EditionJapan Federation of Electrical Power Companies of Japan (10 electric power companies and Electric Power Development Co., Ltd.)

NOx emissions (10,000 tons)(GWh)

Thermal power generated

(FY)

05

U.S. Canada U.K. France Germany Italy Japan Japan KEPCO

(FY)

(g/kWh)


measures

0.6

1.4 1.3

2.0

1.0

0.5

0.2 0.20.085

12 12 12 12 12 12 12 15 15

The wastewater from our power plants is treated thoroughly using many types of equipment. At our thermal power stations we use an oil-catching embankment and loading arm, plus an oil fence to prevent any possibility of an oil leakage. Also, seawater (heated e�uent) used for cooling at power stations is cooled to below 7℃ warmer than the surrounding sea before release. The water intake/discharge port positioning and system are designed so that the water intake and discharged water do not disturb marine wildlife.

Measures to prevent water pollution

Any equipment at our power stations and substations that run the risk of creating noise and vibration are set up indoors or as far from the boundaries of the property as possible, or are �tted with mu�ers. We may also build soundproo�ng walls to control noise and vibration.

Measures to prevent noise and vibration

Water pollution control, noise and vibration prevention

The injection of ammonia used in the nitrogen scrubber and electrostatic precipitator is maintained constantly at proper levels by an automatic controller. The concentration of ammonia in exhaust gas is kept low and periodically measured to prevent the release of bad odors.

Bad odor prevention

Bad odor prevention

KEPCO has created "Guidelines Pertaining to the Soil Contamination Countermeasures Law," which we follow to ensure compliance with laws and regulations related to measures for controlling soil contamination. At our power stations we are prepared for the unlikely event of a leakage of chemicals or fuel such as heavy oil or crude oil. We have set up structures such as embankments to catch liquids or oil, and have other measures in place to prevent soil contamination.

Measures to prevent soil and groundwater contamination

Based on our "Guidelines Pertaining to the Management of PRTR-Designated Chemical Substances" we stringently manage toxic chemicals and take measures to reduce their use. Also, based on Japan's PRTR (Pollutant Release and Transfer Register) Law, we submit reports to the government on amounts of emissions and transfers of chemical substances, and periodically issue public reports.

Management of chemical substances

Chemical substance control

Kansai Electric Power periodically monitors the condition of buildings and facilities identi�ed as containing asbestos and manages them appropriately. We continue to implement carefully planned measures to remove this asbestos and replace it with alternative materials. We will continue to address this issue in compliance with relevant laws and regulations.

Addressing the issue of asbestos

06


measures

Scope of use (buildings and facilities) of asbestos (at March 31, 2016)

Items targeted Type of use Present conditions (usage)

Blown-in materials containing asbestos

Acoustic insulation, thermal insulation, and �reproo�ng materials in company buildings; acoustic insulation for transformers

●Company buildings 339 buildings (about 5% of total)

●Acoustic insulation for transformers 47 units (about 1% of total)

Asbestos- containing products

Fireproo�ng panels, roo�ng materials, �ooring for buildings, etc.

Building materials

●Company buildings May include building materials used before August 2006

Duct lining for underground lines (transmission, distribution, and communications facilities)

Asbestos- cement pipes

● Transmission ducts Approx. 671 km (route length) (about 43% of total length)

Power generation facilities (thermal power facility, nuclear power facility)

Thermal insulation

● Remaining products containing asbestos

Thermal power Approx. 81,300 m3 (about 23% of total)

Nuclear power Approx. 2,500 m3 (about 25% of total)

Power generation facilities (thermal power facility, nuclear power facility)

Sealing materials, gaskets

● Sealing materials (remaining products containing asbestos)

Thermal power Approx. 33,000 (about 29% of total)

Nuclear power Approx. 9,000 (about 5% of total)

Suspension insulators for transmission facilities and the like

Bu�ers

● Transmission facilities Approx. 590,000 (about 12% of total)

●Distribution facilities Approx. 700 (about 1% of total)

Electric wire for overhead transmission lines, hydroelectric dams

Thickeners

● Transmission facilities Approx. 140 km (distance) (about 1% of total length)

● Part of asphalt-surface impervious wall for dam structure 1 facility (Tataragi Dam)

●Gaskets (remaining products containing asbestos)

Thermal power Approx. 4,400 (about 10% of total)

Nuclear power Approx. 29,000 (about 16% of total)

●Distribution ducts Approx. 744 km (route length) (about 6% of total length)

●Communications ducts Approx. 3 km (route length) (about 9% of total length)

07


measures

In building and maintaining our power facilities, we cooperate with local town planning and regional development planning. We are careful to employ facility design that enables buildings to blend into the town or landscape and preserve the scenery, thereby maintaining harmony with the environment.

KEPCO works with local communities on many initiatives to ensure that our business activities are in harmony with the local environment.

Power facility landscape integration

Harmony with the local environment

KEPCO strives to maintain harmony with the surrounding environment when building power plant facilities. In particular, approximately 75% of all coastline area within our jurisdiction is designated as national or prefectural natural park land, and since we often have to locate a power plant within these park boundaries, we carry out surveys prior to building that examine landscape elements, and we decide on the most e�ective measures to take with guidance from experts.For the Nanko Power Station, we were called upon to create a smokestack with a modern shape be�tting an urban-based thermal power plant. We were able to respond with Japan's �rst stack designed as a monument-like tower.At the Sakaiko Power Station, when doing facility renovation we chose colors for the main facilities that would harmonize with the surrounding natural environment, a landscape integration concept based on a pine forest motif like the trees found on the power station's grounds and at Hamadera Park.

Power stations integrated with the surrounding environment

Nanko sky tower (smokestack at Nanko Power Station)

Color-conscious design to blend in with surrounding natural environment (Sakaiko Power Station)

08


measures

We aim to minimize impact on the environment to maintain an integrated landscape not only in places with high social value such as the above-mentioned natural parks and places of scenic beauty, but also in residential areas where people live. Toward this end KEPCO uses minimally designed power structures. With regard to locations designated by the Natural Parks Law, the Nature Conservation Law, and other laws and regulations, we take care to preserve the natural landscape, �ora, and precious plants and animals. Also, in cooperation with local communities we take living environments and land usage into consideration and strive to protect cultural assets and historical landscapes. We gather information on development plans and the like in various regions, and conduct detailed environmental impact studies as necessary. In all of these way we aim to build and maintain facilities that are able to win the understanding of people in government and local communities.Speci�c examples of the environmental measures we take include using dark colors, such as a dark brown for the steel towers in natural parks, scenic zones, and such areas, or low-re�ection wires.

Minimal-design overhead transmission lines

The movement to eliminate utility poles and bury electrical wiring underground is being planned and implemented primarily by the road authorities (Ministry of Land, Infrastructure and Transport and local governments). KEPCO actively cooperates with such projects as the company performing such installations. We will proceed with work to bury power lines underground while gaining the understanding and cooperation of the residents of each area.Aware of the public nature of this endeavor, we will carry out underground conversion with a priority on city center areas that have high foot tra�c, historical streets that call for preservation, emergency transportation roads for evacuation and rescue in a major disaster, and other types of locations.

Conversion to underground distribution lines

Examples of streets with underground utilities

Minimal-design steel tower that blends into the natural environment

09


measures

We are planting trees on large-scale industrial sites such as power plants using an ecological revegetation method to create natural woodlands that grow into mature forests in a short period of time. The process involves selecting nursery stock of suitable local tree species and the dense planting of mixed varieties of saplings that can grow quickly into a mature, natural forest. KEPCO �rst introduced the method in 1977 at the Tanagawa No. 2 Power Station and has since successfully created a large number of natural woodlands through ecological revegetation at our power plant sites.

Also, we strive to protect the ecosystem endemic to each region by exterminating invasive species in these wooded tracts, thereby preserving biodiversity. In the vicinity of the Nanko Power Station, for example, located in the city of Osaka, there are no natural forests. Because there is little available supply of seeds from outside the area, we have planted an additional 1,168 plants in 66 species in an e�ort to increase the diversity of seeds for tree planting.

Creating natural woodlands (ecological revegetation)

Conservation of biodiversity

Natural woodlands created through ecological revegetation at KEPCO

● KEPCO has approximately 77 million square meters of wooded land (about 29 times the size of Osaka Expo Park), including our natural woodlands.

Revegetation area: approx. 15 Koshien baseball stadiums (about 600,000 m2)

KEPCO service area

Ecological revegetation at Gobo Power Station

Bird's-eye view of Gobo Power Station

The trees are over 10 meters tall in the wooded area, which makes up one-fourth of the land area of the power station

Abundant woodlands have grown at many of our business locations, creating homes for wild birds, insects and small animals.

Bull-headed shrike Japanese bush warbler

Miyazu Energy Research Center

Maizuru Power Station

Ako Power Station

Ohi Power Station

Nanko Power Station

Tanagawa No. 2 Power Station

Gobo Power Station

Aioi Power StationHimeji No. 1 Power Station

Himeji No. 2 Power Station

Ecological revegetation at Ako Power Station

September 1987

October 2007

10


measures

The oriental white stork, listed as Endangered (EN) on the IUCN Red List of Threatened Species (2013), is designated as a special natural treasure in Japan. It is being arti�cially bred in the city of Toyooka, Hyogo, and released into the wild. To prevent the birds from striking electric wires and getting injured, we add colored bands to the transmission wires in this area to increase their visibility to the stork. Also, the storks will build nests atop utility poles and steel towers. Because of the dangers of transmission wire damage and the storks receiving a fatal electric shock, we work with the University of Hyogo and the Hyogo Park of the Oriental White Stork to remove the nests quickly and take measures to prevent them from perching on the utility poles. In these ways, we can both protect the wild storks and maintain the safety and the stability of the power supply.

Transmission wire measures to protect birds

Power lines with colored bands

Storks nesting atop a utility pole

A trolley bus runs along the Tateyama Kurobe Alpine Route between Nagano and Toyama prefectures. The trolley bus is not an ordinary gasoline-powered bus, but runs on an electric motor, so it emits no exhaust. It also runs very quietly, so the sound will rarely startle animals. Kurobe Dam, which is situated in a national park, receives one million visitors annually. Since it is possible that the seeds of invasive plant species not found in the Kurobe area can be carried in through the mud on the soles of visitors shoes, a seed-removing �oor mat has been installed at the ticket gate at Ogisawa Station, the Nagano-side trolley station. The removed seeds are vacuumed up and burned.

Protecting native species in Kurobe Dam Environs

Trolley bus

Seed-removing �oor mat

11


measures

We strive to create biotopes (natural woodlands and ponds) on the grounds of our power plants where dragon�ies, �re�ies, and other insects can thrive. The Okutataragi Power Station biotopes in Hyogo Prefecture provide a valuable breeding ground for the forest green tree frog, a species listed as endangered on the Red List of Hyogo Prefecture (2003). This year again frogs have been con�rmed to be inhabiting the areas.

Biotopes

Forest green tree frog (Rhacophorus arboreus)

Okutataragi Power Station, Asago, Hyogo

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measures

Documents

Promotion of community environmental protection measures · Local environmental protection measures 01 Air pollution prevention measures Reducing sulfur oxide emissions (SOx) Reducing