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This section provides an overview for emergency power generators as well as their applications and principles. Also, please take a look at the list of 13 emergency power generator manufacturers and their company rankings. Here are the top-ranked emergency power generator companies as of December, 2024: 1.C&C Power Inc., 2.Preston, Gustavo Co., Inc., 3.Computer Air/Power Systems, Inc..
Table of Contents
Emergency power generators are power generation devices installed for disaster prevention and security purposes in anticipation of sudden power outages due to disasters.
If the power supply stops, there is a risk of secondary disasters due to communication lines being interrupted in buildings, hospitals, and other facilities. The installation of emergency generators is essential to prepare for such a situation.
Emergency generators are mainly engine power generators and gas turbine power generators. It is vital to select the right one for the application and the building in which it will be used. Both are highly reliable and can be used as high-quality power supply units.
Emergency power generators are used in locations with a risk of secondary disasters in the event of a sudden power outage. Examples of use are listed below.
In some of the above cases, the installation of emergency power sources is required by law.
The power generation mechanism uses the principle of electromagnetic induction to generate electromotive force when a conductor crosses a magnetic field.
Since emergency generators must be able to be used reliably in an emergency, they are equipped with a system that detects power outages and quickly switches to the generated power source. They are also vibration-resistant so that they can operate even in an earthquake.
Emergency generators are mainly engine generators and gas turbine generators.
Diesel generators use a diesel engine for motive power, and an alternator is directly connected to the diesel engine to generate electricity. It takes a short time to start and has a high thermal efficiency of about 35% to 40%. They are also highly reliable power generators in terms of their start-up.
Gas turbine generators are air-cooled for emergency use. Since no cooling water is required, there is no risk of turbine failure due to freezing or water cutoff. Another feature is that the installation area is smaller than for diesel engines.
Emergency power generators must undergo three periodic inspections to ensure reliable operation in an emergency.
Periodic Inspection Based on the Electricity Business Act
This inspection performs a no-load operation (dry run) for about 5 minutes with the electrical system turned on.
Periodic Inspection Based on the Fire Service Act
A visual functional inspection is conducted every six months, and a no-load operation is done annually.
Load Test Operation in Accordance With the Fire Service Act
This test must be conducted once a year. Emergency power generators are connected to a load test device and operated continuously for 30 minutes with a load of 30% or more. During the load test operation, we confirm that there are no abnormalities, such as abnormal vibration or heat generation, in the emergency power generator and that the operation is normal. In addition, it also serves to burn off the carbon generated during the no-load operation.
As mentioned above, the load test operation requires the connection of the load test equipment to the emergency power generator. However, this may be difficult depending on the location of the emergency power generator. However, the Fire Service Law was revised in 2019, and gas turbine emergency power generators are no longer required to perform load test operations. Even for equipment requiring a load test, the inspection is now considered equivalent to a load test by conducting the prescribed internal observations if it is challenging to conduct a load test.
Emergency power generators vary widely in price, depending on the generation method and capacity. For a small unit for home use, a 45,000mAh/3.7V/167Wh/rated 150W solar-charged and lithium-ion battery storage type generator can be purchased for 10,000 yen or less.
On the other hand, emergency power generators used in stores and server rooms are gas turbine-powered and cost several million yen or more. Many engine emergency power generators are also available for large facilities, and like gas turbine generators, they are priced in the millions of yen to several million yen range.
*Including some distributors, etc.
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C&C Power Inc., established in 1993, is a manufacturer of power solutions headquartered in Illinois, USA. The company's product categories include battery solutions, monitoring, AC solutions, and DC power. The company's expertise relies on crafting and servicing battery systems, UPS peripherals, telecommunication equipment, and electrical solutions. Its robust infrastructure enables it to swiftly provide an extensive selection of standard products and tailor-made solutions to cater to specific power requirements. The company is ISO9001:2015 certified.
Computer Air/Power Systems, Inc. (CAPS), founded in 1982 and headquartered in Campbell, CA, is a sales and services provider of power systems. The company offers a comprehensive product line of 136 products, including UPS systems, standby diesel generators, battery banks, Emergency Lighting Inverters, power conditioning equipment, software & ancillaries. Their comprehensive product line covers power solutions for mitigating harmonics, power distribution, and monitoring, serving industries like finance, telecommunications, IT, retail, healthcare, and more. Their manufacturers include Eaton, Toshiba, and Schneider Electric, among others, and they have completed around 1.5 K projects.
Gustavo Preston Company was founded in 1881 and is headquartered in Chelmsford, Massachusetts. The company is a manufacturer of fluid handling equipment products in the Boston and greater New England area. The company’s products include packaged pumping systems, water purification systems, commercial water heaters, pressure regulator valves, and remote monitoring equipment. The company’s services include preventative maintenance programs, pump and equipment repairs, pump and system upgrades, and design and specification of engineered pump product systems.
Xylem Inc. was incorporated in 2011 and is headquartered in Washington, District of Columbia. Xylem engages in the design, manufacture, and servicing of engineered products and solutions for the water and wastewater applications across global markets. Xylem operates through three segments: water infrastructure, applied water, and measurement & control solutions. Xylem’s water infrastructure segment offers numerous products such as water pumps, filtration, disinfection, and biological treatment equipment. Xylem’s applied water segment distributes pumps, valves, heat exchangers, controls, and dispensing equipment systems. Xylem’s measurement & control Solutions segment offers devices such as smart meters, networked communication devices, data analytics, test equipment, controls, sensor devices, and software and managed services.
Generator Source (formerly Diesel Service & Supply), established in 1981 and headquartered in Brighton, Colorado, is a distributor of generators and parts, automatic transfer switches, and related services. Its extensive product range includes diesel, natural gas, portable, standby, and industrial generators from brand name manufacturers including Cummins, Caterpillar, and Kohler. The company also offers a comprehensive suite of services, including installation, maintenance, and repair, catering to a wide spectrum of needs – from backup power for various applications such as construction and agriculture to commercial and industrial power solutions.
Scott's Emergency Lighting and Power Generation, Inc. is located in Pennsylvania, USA, and provides power and lighting products and services since 1971. Their products include standby, mobile, and RV generator systems, Lead Acid and rechargeable batteries, UPS (Uninterruptible Power Systems), and more. Besides installation, the company also endorses maintenance contracts, repairing, and providing services related to power generation whether it's hardware-based like complete in-house turnkey installation, or software-based upgrades and calibrations. The businesses that avail the services of Scott's Emergency Lighting and Power Generation, Inc. includes hospitals, residential regions, stores, the manufacturing industry, and even governmental institutes.
Critical Power Products & Services, LLC, founded in 2016, is a provider of data center environmental and power equipment headquartered in Post Falls, Idaho, USA. The company specializes in the disposal or acquisition of new, used, and refurbished generators, air conditioners, UPS units, and more. They are a certified Service Disabled Veteran Owned Small Business and a registered Veteran/Service Member Owned Business. Their comprehensive range of services includes equipment removal and disposal, site surveys, and consulting. They cater to industries like agriculture, healthcare, mining, regional firms, Fortune 500 companies, and more.
Gammill Electric, Inc. is an American contract service provider and distributor specializing in electrical construction equipment that was established in Irwindale, California in 1967. The company offers various services for industrial electrical construction projects, including engineering design, installation, maintenance, and mechanical support. They also stock and sell products instrumental to electrical construction projects, such as standard and custom control panels, as well as mobile and standby generators. Gammill Electric has served several notable companies with operations in the industrial sector, including Exxon Mobil, Dow Chemical, and Northrop Grumman.
TOYO DENKI SEIZO K.K. founded in 1918 and headquartered in Tokyo, Japan, is a manufacturer that is engaged in three main areas of business that includes transportation systems, industrial systems, and information systems. They provide electrical equipment such as motors, generators, transformers, and control systems. These products cater to various industries including manufacturing, energy, and transportation. Their products are utilized in applications such as industrial machinery, power generation, and transportation systems. The company also answers customer inquiries through postal, mail, and telephone contact.
GE Gas Power is an American manufacturer and supplier of alternative energy products and solutions established in 2015 as a business unit of the American multinational industrial company General Electric (GE). Headquartered in Schenectady, New York, the company produces steam and gas turbines, standard and heat recovery steam generators (HRSGs), heat exchangers, and power plants for various applications. They also offer after-sale installation, repair, maintenance, and upgrade services for their clients. GE Gas Power runs the world’s largest base of operating gas turbines, with over 7,000 units installed across more than 120 countries.
ABB E-mobility provides electric vehicle charging solutions for customers around the globe. ABB E-mobility offers DC fast chargers as well as AC chargers with focus on reliability and uptime. Since 2010, ABB E-mobility has sold over 50,000 DC fast chargers and over 1 million total AC chargers. ABB E-mobility offers home single and multi-charge units, retail, workplace, and hospitality charge units, electric vehicle fleet sales, as well as public transportation. Additionally, numerous digital solutions and software services are available.
WEG, founded on 16 September 1961, is the world’s largest manufacturer of commercial and industrial electric motors, gearboxes, automation technologies, power generation equipment, and related equipment. Such products are used in the manufacturing of pumps, compressors, fans, and more. The company started with the motive of manufacturing electric motors, but soon it expanded its services to the manufacturing of electric and electronic components, industrial automation technologies, power and distribution transforms, etc. The company has been awarded various ISO certifications. Different companies, including PAUMAR, GEREMIA and 16 more, are affiliated with the WEG group.
Denyo Co. Ltd. is a Japanese manufacturer of outdoor power sources founded in 1948 and is headquartered in Tokyo, Japan. The company produces standard and custom welding machines, generators, and air compressors. These include fuel or hybrid generators, electric air compressors for pneumatic tools, and lifting towers. The company primarily serves clients in the entertainment, construction, and manufacturing sectors. It also offers additional OEM, maintenance, and repair services for clients with unique project parameters.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | C&C Power Inc. |
16.2%
|
| 2 | Preston, Gustavo Co., Inc. |
11.3%
|
| 3 | Computer Air/Power Systems, Inc. |
9.9%
|
| 4 | Generator Source (formerly Diesel Service & Supply) |
7.7%
|
| 5 | Xylem Inc. |
7.7%
|
| 6 | WEG Electric Corp. |
7.2%
|
| 7 | TOYO DENKI SEIZO K.K. |
7.2%
|
| 8 | Gammill Electric, Inc. |
6.8%
|
| 9 | Critical Power Products & Services, LLC |
6.3%
|
| 10 | GE Gas Power |
5.9%
|
Derivation Method
The ranking is calculated based on the click share within the emergency power generator page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
8 | 88.9% |
|
Japan
|
1 | 11.1% |
49 products found
49 products
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