Welcome to Extensible Energy

Headquartered in Berkeley, California, Extensible Energy was founded by John Powers, an energy economist and software entrepreneur, and Ari Halberstadt, a solar software architect and engineer.

Our mission is to promote the expansion of the commercial solar market through developing intelligent software that is always adapting with energy, technology, data, and the grid.

How Our Software Works

Learn About Our Customers

Leadership

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Co-founder & CEO

John Powers

Experienced entrepreneur; 25+ years of energy experience: utilities; energy consulting; economist, MA

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Director of Engineering

Keith Mosher

15 years software architecture experience: software architect, Agile trained, NRG Home Solar software engineering, energy resources engineer, MS

Technical Buildings and Control Expert

Layne Clemen

10 years HVAC Design & Engineering experience including: modeling and controls engineer, Model Predictive Control, Mechanical Engineering PhD

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Co-founder & CTO

Ari Halberstadt

20 years of software and energy experience: software engineer & cloud computing architect; solar energy expert, MS/MBA

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Director of Products

Deepa Lounsbury

10 years clean energy product and finance experience: solar+storage product development, venture capital, investment banking, MS

Engineering Team

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Software Engineer

Cameron Barclift

Experienced software developer and systems architect

Software Developer and Data Analyst

Harrison Li

Backend and machine learning developer

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Data Scientist

Rodin Porrata

Efforts include Antarctic neutrino experiments, gamma-ray-burst observatories in the US, a Kuiper belt observatory in Taiwan, and HIV experiments in San Francisco.

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Software Engineer

Worth Freeman

Fullstack developer with over 15 years of experience

Communications and Finance

David Dinerman

CFO

20+ years CFO for venture backed companies, 15 years of Commercial Real Estate; JD

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Raine Scott

Product Manager

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Paul Carlstroem

Content and Partnerships Manager

25 years experience with partnerships, marketing, branding

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Shane Wright

Business Partnership Manager

Our Values

SMART

When it comes to load flexibility and demand charge management challenges for solar and storage, we will always be improving our solutions.

SIMPLE

Our software and services are always easy to install and nearly invisible. Customers should only notice us when they see how we’ve reduced their utility bills.

ADAPTABLE

Our software is adaptable in real-time, and so are we. We’ll happily adapt to new technology, rates, markets, policies, and opportunities.

TRUSTWORTHY

You can trust us to deliver on our promises. Whatever we do, we’ll always make it right.

DYNAMIC

We are energetic, always moving forward, always improving, always looking for new opportunities to deliver more.

DATA-DRIVEN

Data is good. Harnessing and using data improves our products, our business, and our vision for transitioning the world to 100% clean energy.

Extensible Energy Careers

If you are passionate about buildings, solar, and load flexibility and have skills to contribute to our team of energy industry disrupters, contact us.

Openings

We are always hiring. If you believe you would be a good fit for our team please get in touch.

Get in touch