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is a Japanese ceramics company. It primarily produces insulators but also produces other products, especially ceramic products. NGK is headquartered in Tokyo (Marunouchi Bldg. 25F, 2-4-1, Marunouchi, Chiyoda-ku, Tokyo 100–6325) and is listed on the
is a Japanese ceramics company. It primarily produces insulators but also produces other products, especially ceramic products. NGK is headquartered in Tokyo (Marunouchi Bldg. 25F, 2-4-1, Marunouchi, Chiyoda-ku, Tokyo 100–6325) and is listed on the Nikkei 225
The Nikkei 225, or , more commonly called the ''Nikkei'' or the ''Nikkei index'' (), is a stock market index for the Tokyo Stock Exchange (TSE). It is a price-weighted index, operating in the Japanese yen, Japanese Yen (JP¥), and its compone ...
, which is an index of the Tokyo Stock Exchange
The , abbreviated as Tosho () or TSE/TYO, is a stock exchange located in Tokyo, Japan.
The exchange is owned by Japan Exchange Group (JPX), a holding company that it also lists (), and operated by Tokyo Stock Exchange, Inc., a wholly owned sub ...
. It is also listed in the Osaka Securities Exchange, the Nagoya Stock Exchange
Nagoya Stock Exchange (名古屋証券取引所 ''Nagoya Shōken Torihikijo'', NSE) is a stock trading market in Nagoya, Japan. It is Japan's second largest exchange, behind the Tokyo Stock Exchange. It is operated by Nagoya Stock Exchange, Inc. ...
, and the Sapporo Securities Exchange all under listing code 5333. NGK stands for Nippon (Japan) Gaishi (insulator) Kaisha (company).
Sodium-sulfur batteries
NGK Insulators is known-worldwide for the development of sodium-sulfur batteries in cooperation with TEPCO. NGK's NaS battery systems are being used worldwide, primarily in Japan and the United States. NGK Insulators markets its NaS batteries for use as grid storage (especially for use in conjunction with renewable energy sources such as wind and solar). The battery systems can be used for both peak shaving, load leveling, emissions reductions, and as emergency power supplies. The "typical system" (as defined by NGK) is composed of 40 50-kW units for a total system capacity of 12,000 kWh. NGK's systems are currently used worldwide, both as grid storage and as a supplement to wind and solar installations. System capacities range from 1.5 to 34 MW.See also
* NGK *Tokyo Electric Power Company
is a Japanese electric utility holding company servicing Japan's Kantō region, Yamanashi Prefecture, and the eastern portion of Shizuoka Prefecture. This area includes Tokyo. Its headquarters are located in Uchisaiwaicho, Chiyoda, Tokyo, an ...
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Ceramics manufacturers of Japan Companies listed on the Tokyo Stock Exchange Companies in the Nikkei 225 Manufacturing companies based in Nagoya {{Japan-company-stub