The or for short, is the monopoly

Monopoly

A monopoly exists when a specific person or enterprise is the only supplier of a particular commodity...

 electric company

Electric company

Electric company can mean:*Electrical power industry*Electric Company *The Electric Company *The Electric Company...

 of Hokkaidō

Hokkaido

, formerly known as Ezo, Yezo, Yeso, or Yesso, is Japan's second largest island; it is also the largest and northernmost of Japan's 47 prefectural-level subdivisions. The Tsugaru Strait separates Hokkaido from Honshu, although the two islands are connected by the underwater railway Seikan Tunnel...

, Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

. It is also known as Hokuden, Dōden, and HEPCO. The company is traded on the Tokyo Stock Exchange

Tokyo Stock Exchange

The , called or TSE for short, is located in Tokyo, Japan and is the third largest stock exchange in the world by aggregate market capitalization of its listed companies...

 (first section), Osaka Securities Exchange

Osaka Securities Exchange

is the second largest securities exchange in Japan, in terms of amount of business handled. As of 31 December 2007, the Osaka Securities Exchange had 477 listed companies with a combined market capitalization of $212 billion. The Nikkei 225 Futures, introduced at the Osaka Securities Exchange in...

 (first section), and Sapporo Securities Exchange.

According to the company profile, during fiscal 2011 (i.e 1 April 2010 to 31 March 2011), 44% of the electricity generated was from nuclear, 31% from coal, 15% from hydro, 8% from oil and 2% from 'new energy' sources.

Hokkaido only has one nuclear power station. This is the Tomari Nuclear Power Plant

Tomari Nuclear Power Plant

The is the only nuclear power plant in Hokkaidō, Japan. It is located in the town of Tomari in the Furuu District and managed by the Hokkaido Electric Power Company. All of the reactors are Mitsubishi designs...

.

Facilities

• Nuclear
  • Tomari
    Tomari Nuclear Power Plant
    The is the only nuclear power plant in Hokkaidō, Japan. It is located in the town of Tomari in the Furuu District and managed by the Hokkaido Electric Power Company. All of the reactors are Mitsubishi designs...
    
      (泊発電所)（2070 MW）

• Geo-thermal
  • Mori (森発電所)（50 MW）

• Hydro electric - 53 dams including the following:
  • Hoheikyo, Ishikari River
    Ishikari River
    is a river in Hokkaidō, Japan. At in length, the river is the third longest in Japan and the longest in Hokkaidō. The river has a drainage area of , making it the second largest in Japan, as is its total discharge of around per year....
    
     (50 MW)
  • Kamiiwamatsu, Tokachi River
    Tokachi River
    is a river in Hokkaidō, Japan....
    
     (30.4 MW)
  • Niikappu, Niikappu River
    Niikappu River
    is a river in Hokkaidō, Japan.-Course:The Niikappu River flows south to southwest from Mount Poroshiri in the Hidaka Mountains. The river flows through four dams, including Niikappu Dam and Okuniikappu Dam. Both dams are owned by the Hokkaido Electric Power Company, Inc. The dams form Lake Niikappu...
    
    （200 MW）
  • Nokanan, Ishikari River (30 MW)
  • Okuniikappu, Niikappu River (44 MW)
  • Shizunai, Shizunai River
    Shizunai River
    is a river in Shinhidaka, Hokkaidō, Japan. The Shizunai River drains from the Hidaka Mountains into the Pacific Ocean.-Origin of the name:The Shizunai River was known as Shibuchari and Shibechari. This name was derived from Shipe-ichan meaining a salmon spawning place in Ainu...
    
     (48 MW)
  • Takami, Shizunai River（200 MW）
  • Takisato, Ishikari River (57 MW)
  • Tokachi, Tokachi River (40 MW)
  • Tomura, Tokachi River (40 MW)
  • Uryu, Ishikari River (51 MW)

• Coal
  • Naie (奈井江発電所)（350 MW）
  • Sunagawa (砂川発電所)（250 MW）
  • Tomato-Atsuma (苫東厚真発電所)（1,650 MW）

• Oil
  • Date (伊達発電所)（700 MW）
  • Shiriuchi (知内発電所)（700 MW）
  • Tomakomai (苫小牧発電所)（250 MW）

• Diesel
  • Onbetsu (音別発電所)（280 MW）

Others;

• Wind farms - 3 facilities（1.58 MW）
• Solar (photovoltaic
  Photovoltaics
  Photovoltaics is a method of generating electrical power by converting solar radiation into direct current electricity using semiconductors that exhibit the photovoltaic effect. Photovoltaic power generation employs solar panels composed of a number of solar cells containing a photovoltaic material...
  
  ) energy - 9 facilities（146 kW）

Generating capacity by source

style="padding-bottom:0em" |Electricity producing capacity by source

Source	Megawatts	Percentage	Number of units
Coal	2,250	30	3
Nuclear	2,070	27.5	1
Oil	1,650	22	3
Hydro	1,231	16	53
Diesel	280	4	1
Geo-thermal	50	0.5	1
Other	2	-	?
Total	7,533		62?

External links

• Hokkaido Electric Power Co., Inc. (in English)
• HEPCO Sustainability Report 2008 (in English)