Welcome to Extensible Energy
Headquartered in Oakland, California, Extensible Energy was founded in 2010 and is led by John Powers, an energy economist and software entrepreneur, and Ari Halberstadt, a solar software architect and engineer.
Our mission: We believe that empowering every building with intelligent energy control software is essential for transitioning the world to a modern, clean energy grid.
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.