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  1. Home
  2. Industrial Electrical Equipment
  3. 石井電気システム
Industrial Electrical Equipment
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石井電気システム

EstablishmentApril 1, 1996
capital1500Ten thousand
number of employees10
addressShiga/Takashima-shi/566 Tanaka, Azumigawa-cho
phone0740-33-7410
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last updated:Jul 14, 2025
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  • Products/Services(4)
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石井電気システム Company Overview

After more than 25 years of research on demand control, we develop and manufacture low-cost machines for small and medium-sized enterprises as well as high-function machines for large corporations.

After successfully developing a low-cost automatic demand controller that can be implemented in small and medium-sized enterprises for over 25 years, we have evolved through various advice received as it has spread to over 10,000 units nationwide through word of mouth among electrical engineers. The ISS-4, equipped with patented technology that finely controls energy savings for each air conditioner while monitoring the discomfort index of the outdoor and indoor environment, has been well received, and its adoption is increasing among well-known companies nationwide that are committed to environmental protection while valuing their customers. The ISS is sold through our company or distributors, and we are building demand + energy-saving control systems tailored to our customers' facilities. For more details, please contact us at the email address below. info@ishiidenki-system.com

Business Activities

■Development and manufacturing of demand controllers ・ISS Series  * Equipped with patented technology that monitors climate and indoor discomfort index, significantly reducing not only demand but also electricity consumption. Additionally, it offers overwhelming cost performance with minimal wiring work required, leading to adoption not only by small and medium-sized enterprises but also by well-known companies. ・IDM Series  * A low-cost yet high-performance demand monitoring system for electrical management engineers. ■Development and manufacturing of energy-saving devices ・Chilled and hot water pump and air conditioning fan energy-saving control system (numerous achievements of over 40% energy savings using inverters) ・Remote monitoring and control system for solar power plants (genuine remote monitoring of power plants at an overwhelmingly low cost) ■Load leveling and energy-saving (energy management) system construction ■Maintenance of electrical and disaster prevention equipment

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Products/Services (4)

Energy Management System "ISS-4 Mini" product image
Energy Management System "ISS-4 Mini"
Demand Controller "Smart eSaver ISS" product image
Demand Controller "Smart eSaver ISS"
Demand Controller "IDM Series" product image
Demand Controller "IDM Series"
Demand Controller "Smart eSaver ISS-4" product image
Demand Controller "Smart eSaver ISS-4"

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catalog(3)

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ISS-4 Product Information 2025 Edition

ISS-4 Product Information 2025 Edition

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Demand Controller "Smart eSaver ISS-4"

Demand Controller "Smart eSaver ISS-4"

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Energy Management System "ISS-4"

Energy Management System "ISS-4"

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news(1)

IPROS02752935499105893009.jpeg

Notice of Company Name Change and Change of President and CEO

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We are pleased to announce that as of October 1, 2021, Yusuke Ishii has been appointed as the President and CEO. Additionally, we have changed our company structure from a limited liability company to a corporation and have renamed ourselves "Ishii Electric System Co., Ltd." Under this new structure, we are committed to making even greater efforts toward the development of our business, and we sincerely hope for your continued support. - Former company name: Ishii Electric System Limited Liability Company - New company name: Ishii Electric System Co., Ltd.

Nov 08, 2021

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Detailed information

Company name 石井電気システム
number of employees10
Contact addresspostalcode 520-1217 Shiga/ Takashima-shi/ 566 Tanaka, Azumigawa-choView on map TEL:0740-33-7410 FAX:0740-33-7411
Key PartnersAi Holdings Corporation Daigas Energy Corporation Nippon Tokushu Ceramic Co., Ltd. Daisen Membrane Systems Corporation Shiga Special Equipment Co., Ltd. Mitsuaki Corporation Omron Kansai Corporation
Industry Industrial Electrical Equipment
石井電気システム Building Image

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