About Us


SIERRA Electrical & Power Solutions (Indonesia) is part of Kotohira System (株式会社ことひら システム ), one of the oldest industrial grade power supply manufacturers in Japan, subsidiary of Jeidar Electronics Ltd Global that has market shares in Asia, America and Europe. Currently we are expanding in Southeast Asia market particularly in Indonesia under the trading name SIERRA. Seeing this as a potential high quality, reliable and competitive product, PT.Global Niaga Internusa acquires SIERRA brand for Indonesian market

Our Electrical Power solutions products are Solar Power Systems, Uninterruptable Power Supply (UPS), and Gensets.

Kotohira System

Kotohira System (株式会社ことひら システム) is one of the oldest industrial grade power supply manufacturers in Japan. We distribute and install AC/DC UPS, batteries for an enormous number of industry and business all over the country and oversea. Besides, we are capable to provide AC power supply from 400VA to 600KVA standalone with specific voltage for input and output in order to reach all customers’ demand.

We were established in 1993 at Kotohira, Kagawa. Our profession is to design and produce DC/AC power system supply for industrial application. Since 1993, we have our products constantly installed in Japan railway, nuclear power plant, telecommunication system, air transportation, etc. Until now, we also enabled to provide OEM to battery suppliers all over Japan whether domestic usage or exportation. As a fact of business’s growth, we are now moving our plant and service office into other significant areas, in order to be more internationally and productively response to costumers’ fulfillment.

Jeidar Electronics

Jeidar Electronics, is the leading 1st generation of uninterrupted power supply solution providers in China. For 23 years, Jeidar has specialized in the research, manufacture, sales and services of UPS productions.

Jeidar has been honored as national high-tech enterprise recognized by Chinese Government; Shenzhen High-tech enterprise. Jeidar has two production bases, and many offices and service centers in 23 province in China, in addition to offices in U.K and United States.

Jeidar has an annual power production capacity of 150,000 units and annual sales of $ 25 millions. In 23 years, Jeidar UPS believes in advanced technology, high reliability, quality, cost-effective and outstanding service, and we won domestic and international markets, such as financial, tax, securities, insurance, postal services, telecommunications, transportation , public security, electricity, education, and military with the system’s trust and praise. We worked with Delta, Emerson, Pakistan National Banks, Vodafone, Cornell University, InfoSec, and Olympic Organizing Committee internationally.

Jeidar continues to promote the brand building strategy, innovation,and core technology products in order to standardized our management. Jeidar Electronics complies to the ISO 9001:2008 and ISO 14001: 2004 quality standards. Jeidar Company Certifications can be downloaded here.

Installation Technical Support and After Sales Service

Sierra Electrical Power solutions have Experts ready to provide you with excellent service. We will provide the installation and Continued support over the life time of your product. We have local and overseas engineers ready to work on your projects. Our UPS, controllers and chargers all have a warranty period of 2 years for your Peace of mind.





PT. GLOBAL NIAGA INTERNUSA (GNI) a multi business trading COMPANY, providing effective solutions in the Asian supply chain. GNI brings best competitive and quality options to our clients. Visit www.globalniaga.co.id for more information.

Download our Company Profile here.