San Jose UPS Power Supply

Uninterruptible Power Supply for San Jose, Santa Cruz & the San Francisco Bay Area

Nite And Day Power was founded over 30 years ago to service the need for reliable emergency power services in the Bay area and Northern California. We sell, install, maintain, and service Uninterruptible Power Systems (UPS) electrical and emergency back-up power generators that support critical datacom/telecom installations and industrial process control equipment. By working closely with the leaders in the industry (i.e. Eaton/Powerware, APC, Toshiba, GE, Onan, Kohler), we stay abreast of the latest technologies used in the UPS and generator industries. We offer a 24-hour UPS monitoring that will alert our central desk electronically (direct from the UPS) with alarms, outages, environmental conditions, etc, enabling a response time measured in minutes, not hours (1-800-540-POWER).

In more than 30 years in the uninterrupted power supply business, our work has never been more crucial to Northern California companies than it is today. More enterprises in the Bay Area and beyond have now been subject to shoddy treatment and poor service from utilities.

It is more likely than ever before that electric service to your business will be interrupted without warning. These interruptions can last for hours and often take place at the peak of your working day. Companies that have perishable foodstuffs or medications need to be especially vigilant.

Our expert team helps you by designing and installing the right UPS power supply system to meet your needs. With battery backup power, you no longer need to worry that you will lose thousands of dollars in business opportunities or see mission critical equipment damaged because of electrical outages.

When you purchase a battery backup power system from us, you are getting a lifetime commitment.

Our team will be with you every step of the way to help you get the most value from your UPS battery backup. We extend the life of your components and help you avoid building-wide power system problems through our UPS maintenance service. Our experienced, certified UPS technicians know your system inside and out.

Like any complex mechanical system, UPS maintenance is key to saving money on replacement costs. With a UPS maintenance plan, you can leave all the hard work to us. We will handle your weekly, monthly, quarterly, and annual UPS maintenance and UPS testing routines with zero disruption to your operations.

Your UPS system may go for weeks or months without being used. When a disaster strikes, however, you want to be sure that it will work exactly as intended. UPS maintenance is the most crucial part of reliable service. All UPS maintenance needs to be carefully calibrated to the exact needs of your system.

When you choose a Northern California UPS maintenance contract with us, you are saving money and making your business safer. We can make repairs and replacements before problems interfere with the way your system works. We can also test every component of your system to be sure you are emergency-ready.

New system startup, battery unit replacement, and many more services are available all under one roof. Thanks to our 24-hour emergency service, we are always just a call away. If your system behaves unexpectedly or you need to be sure that it will perform due to weather or other disasters, we will be there to help you.

Our Northern California UPS maintenance technicians are certified electricians who can help you reduce the risk of business disruption from electrical system issues. In addition to UPS maintenance, we can perform full power analysis to check the status of your entire electrical system.

Our electricians are equipped with powerful thermal scanners that help us detect potential fire hazards in your wiring. This is especially important if your building is older or situated in an area that has been subject to long-lasting high temperatures. Every piece of equipment adds further demand to your electrical system!

Don’t make the mistake of exposing your UPS power system to failure and costly repair by using a cut-rate service. Nite & Day Power is the professional name in business UPS power systems you can trust. Every member of our team is dedicated to adding years to your UPS system’s life with the best UPS maintenance.

Don’t wait for another “Public Safety Power Shutoff” to strike before you decide on a UPS system. Call Northern California’s leaders in UPS maintenance and installation today.


The goal of Nite And Day Power is to provide outstanding local emergency back up power services utilizing existing and future technologies in energy storage and power generation.

Our Service Areas include:  Fremont, Saratoga, Santa Clara, San Jose, Cupertino, Campbell, Los Gatos, Mountain View, Los Altos, Milpitas, Palo Alto, Stanford, Menlo Park, Atherton, Redwood City, San Carlos, San Mateo, Belmont, Burlingame, San Francisco, Oakland, Berkeley, Pleasanton, Millbrae, Union City, Newark, Hayward, Morgan Hill, Scotts Valley, Santa Cruz