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C3 Energy Overview

Headquarters Redwood City, CA
Size 51 to 200 Employees
Founded 2009
Type Company - Private
Industry Oil, Gas, Energy & Utilities
Revenue $10 to $25 million (USD) per year
C3 Energy is the leading provider of Software-as-a-Service (SaaS) and Platform-as-a-Service (PaaS) data analytics solutions for the global energy industry. C3 Energy is transforming the energy value chain with a family of tested and proven products that deliver end-to-end ... More

Company Updates

  • “Enel’s commitment to improving grid reliability with the help of the C3 Energy predictive maintenance platform is an excellent example of a utility company that is successfully enacting a digital transformation strategy”, said Metering&Smart Energy International managing editor Claire Volkwyn http://glassdoor.com/slink.htm?key=vI1Gv

    Enel increasingly digital and smart

    ?Enel's digital transformation and its commitment to improving the electricity service provided to its customers have been granted a prestigious acknowledgement at European Utility Week, recently held in Vienna. The global electricity company was given an award in the category "Best Digital Utility Transformation" of the Global Smart Energy Elites, a guide to the most cutting-edge smart energy projects drawn up by Metering&Smart Energy International and presented at the EUW.

  • C3 Energy Wins 2015 Fierce Innovation Award!

    C3 Energy Wins 2015 Fierce Innovation Award for Delivering Transformational Business Outcomes with Machine Learning-Based Platform

    REDWOOD CITY, Calif.--()-- C3 Energy, the leader in enterprise analytic software solutions for the global energy industry, today announced that its C3 Predictive Maintenance cloud-based software application has been recognized in the 2015 Fierce Innovation Awards.

C3 Energy – Why Work For Us?

The human capital team assembled at C3 Energy is extraordinary. Our employees include PhD’s and graduate students in machine learning, computer science, power systems, etc., from some of the world’s leading research institutions including MIT, Stanford, Harvard, Yale, Johns Hopkins, Berkeley, UCLA, Michigan, and Illinois. Many were faculty members and research scientists at Carnegie Mellon, UC Berkeley, Lawrence Berkeley Labs, Stanford, and Yale. They collectively bring over 1,000 man-years of relevant work experience to our mission from McKinsey & Co., PG&E, Exelon, Apple Computer, Nest, IBM, SAP, Oracle, and Siebel Systems.

If you want to work with an experienced, driven team and are looking for a fast-paced environment where you can contribute to next-generation energy technology, C3 Energy is hiring extremely talented and motivated professionals.

Big Data. Real-time Analytics. Machine Learning. Cloud Computing. Mobile. Social. 

C3 Energy employees are applying cutting-edge computer science and information technology to enable a cleaner, safer, more reliable, and more efficient energy system. C3 Energy is delivering software solutions that enable smarter generation, delivery, and consumption of energy.

This advanced energy system is not a thing of the future. Today, C3 Energy is leveraging big data, social networking, cloud computing, and machine learning to improve the sustainability, efficiency, reliability, and safety of power delivery.

And because of all this, our world’s energy systems will be smarter, greener, and safer.

Interested? Browse available positions to see how you can join our extraordinary team. 


From our uniquely designed office to our comprehensive healthcare benefits, C3 Energy strives to cultivate a healthy, happy, team-oriented work environment.


It's the most important meal of the day. C3 Energy offers breakfast five days a week, including bagels, muffins, oatmeal, cereal, fruit, and delicious coffee.


C3 Energy offers competitive coverage.
Our program includes medical, dental, and vision.


C3 Energy provides a fully stocked snack area and beverage refrigerator that contains everything from energy drinks to sodas and iced tea. Every day C3 Energy provides a catered, gourmet lunch so that the team can relax together and share ideas.


Stock options are granted to all full-time C3 Energy employees.


C3 Energy offers 15 days of paid time off every year. Employees are encouraged to take advantage of their full vacation benefits. C3 Energy also offers 10 paid public holidays around which you can build your vacation leave.


C3 Energy has been known to host ping-pong and pool tournaments, allowing you to step away from the monitor. This is the perfect opportunity to enjoy coworkers while hitting a white ball at them. Even the executives have been known to wield a paddle or a cue.


Relax and unwind at the end of the week at C3 Energy's weekly Friday Happy Hour. Enjoy good food, good drinks and great company at our office.


To help keep you at the top of your game, C3 Energy offers employees a free gym membership at our state-of-the-art athletic facility.


We’re passionate, and we work everyday to make a difference. Ask a C3 Energy employee why they work here, and their answers are inspiring. Here are a few insights from employees, unedited. 

“I work at C3 Energy because…I wanted to work on the underlying infrastructure that powers smarter, greener, and healthier cities. And of course, the hardest problems I’m excited about — integrating renewables into the grid, making the transportation and consumption of energy more efficient, and stabilizing electricity generation to reach each person—can only be improved and more advanced with data, analytics, and a stellar group of committed, thoughtful, and dynamic people to work on this."

"I work at C3 Energy because…I've lived in a safe, beautiful world my entire life. I owe something to the planet and global community that gave that world to me. I work at C3 Energy because I think we're making a difference. We're acting on a global scale to improve entire systems, networks, cities, while we empower individuals to take control of their own homes, their own worlds."

"I work at C3 Energy because…climate change is overwhelming, and is also the greatest unsolved problem facing humanity. I came to C3 because this is the place where I can have the biggest impact and have the greatest probability of actually changing the way we use our energy. I also want to solve this problem with the smartest people out there."

I am at C3 Energy because people make a hundred choices everyday about energy without thinking through a single one. We all want to be more efficient but don't always realize how or when we can. Through our work, someone will choose the stairs over an elevator; someone will shorten their shower; and someone will trade their radiator for a comfortable sweater. Through our work, appliances will talk to homes that talk to cars that talk to wind turbines and solar panels.  And because of all this, our grid will be smarter.”

"I work at C3 Energy because I want to work on making our energy more affordable, more reliable and more environmental, enabling the dream of a smart grid we have been promised for so long. I am excited to make this a reality using cutting edge technology, algorithms and some of the brightest minds out there, and to explore a vast amount of data like no one has done it before.”

"I work at C3 Energy because it provided the greatest opportunity to use my technology and software background to solve pressing business and environmental problems at the same time.  It is a rare chance to place my career efforts in service of a global goal that is both challenging and vitally important. Technology and business are often seen as being at odds with environmental or humanitarian goals. C3 Energy demonstrates that technology can help the energy industry while also assuring clean, safe, reliable power and limiting the impact of energy use on the environment.”

"I came to C3 Energy because it's time to use the amazing capabilities of Silicon Valley technology to update and improve the systems that power our daily lives. Four generations ago, our country decided to invest knowledge, money, and a nation's effort into building the infrastructure that made us the economic and innovative powerhouse of the world.   Now it's time to renew that investment and show the world how the new landscape of information, technology, and talent can create a second revolution in our infrastructure. I can't think of a better team of people to do that with than my colleagues at C3 Energy, and that's why I came to work here.”  

"Climate change is the most existential problem facing modern civilization, and I decided a while ago that I had to do what I could to have a meaningful impact on solving that problem. Helping to make C3 successful is one of the best ways I can think of to do that. We can potentially have the largest, most scalable impact on the efficiency and carbon profile of energy production, delivery, and use of any organization in the world, by leveraging the power of information technology and the talent of Silicon Valley."

C3 Energy Reviews

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C3 Energy CEO Thomas M. Siebel
Thomas M. Siebel
47 Ratings
  • Featured Review

    Helpful (3)

    Amazingly talented, motivated, and collaborative team is making software history.

    • Work/Life Balance
    • Culture & Values
    • Career Opportunities
    • Comp & Benefits
    • Senior Management
    Former Employee - Senior Executive in Redwood City, CA
    Former Employee - Senior Executive in Redwood City, CA
    Positive Outlook
    Approves of CEO

    I worked at C3 Energy full-time (More than 5 years)


    Men and women from diverse cultures, backgrounds, and viewpoints equally get compensated, recognized, and promoted. Great career advancement for all. C3 Energy is solving very difficult, critically important technical, environmental, and economic problems.


    None. Helping our energy customers make the world safer and more environmentally sound while saving money is an exhilarating experience.

    Advice to Management

    Continue the company’s unique tradition of hiring the very best, giving them great opportunities to contribute, and rewarding their successes.

C3 Energy Photos

C3 Energy Interviews

Interview Experience

Interview Experience


Getting an Interview

Getting an Interview


Interview Difficulty


Interview Difficulty




    Software Engineer Interview

    Anonymous Interview Candidate
    No Offer
    Positive Experience
    Average Interview


    I applied online. The process took a week. I interviewed at C3 Energy in November 2015.


    I applied online through careers section . First round is Skype Interview. I was asked two questions. Could not solve the second one. Ample time will be given to solve it

    Interview Questions

    • 1) Program to print 10 * 10 multiplication table 2) http://www.geeksforgeeks.org/find-possible-words-phone-digits/   Answer Question

C3 Energy Awards & Accolades

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  • OnCloud Top 100, AlwaysOn, 2015
  • Smart Grid Project of the Year, Powergrid International, 2015
  • Global 250 Top Private Companies, AlwaysOn, 2014
  • Global Cleantech 100, The Cleantech Group, 2014
  • Technology Innovation Award, Ventana Research, 2014
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