Prelude Ventures

Natron Energy, Inc. is an energy storage company based in Santa Clara, California, specializing in the development of sodium ion battery technologies for industrial applications. Founded in 2012, the company designs batteries that feature high power, long cycle life, and affordability, utilizing a unique Prussian blue chemistry. Natron Energy's products are suitable for various stationary applications, including uninterruptible power supplies, lift trucks, renewable energy smoothing, smart grids, and regulatory compliance. Additionally, the company operates a software-defined power platform that enhances its energy storage solutions, making them adaptable for critical backup power systems and electric vehicle fast charging, among other uses. Previously known as Alveo Energy, Natron Energy rebranded in March 2017 to better reflect its focus on innovative energy storage solutions.

Spark Thermionics offers an energy-generation device that displaces conventional power production methods. The device utilizes heat-to-electricity converters that are based on thermionic energy conversion technology, can produce power from any fuel source at high efficiency, in a quiet package, and can scale from watts to megawatts, enabling people around the world to have cleaner, cheaper, and more secure electricity.

Aquion Energy is fundamentally­­ changing the economics of power generation, transmission and distribution by developing and commercializing cost-effective energy storage solutions that are safe, reliable, and sustainable from nontoxic components as simple as saltwater. Based on the research of Carnegie Mellon University Professor Jay Whitacre, Aquion's proprietary Aqueous Hybrid Ion (AHI™) battery overcomes the pitfalls of conventional energy storage technologies. AHI systems enhance the electrical grid by providing flexible, emissions-free capacity that optimizes existing generation assets and enables broad adoption of renewable energy technologies.