Partnership ensures compatibility between Tendril EMS and the Silver Spring Smart Energy Network

Boulder, CO – April 30, 2008 – Tendril, the leading provider of standards-based energy efficiency software and hardware systems for the utilities industry, today announced that it has joined Silver Spring Networks Technology Alliance Partner Program as a founding member.

The Tendril Energy Management Systems (EMS) includes: an enterprise wireless network operating platform that utilizes the open, interoperable ZigBee Smart Energy Profile; consumer end devices such as smart thermostats, smart in-home displays and smart outlets; an IP-to-ZigBee Gateway; a suite of network management tools for ZigBee network monitoring and diagnostics; a consumer energy management portal; a utility back-office integration portal; and other infrastructure components to provide a secure and reliable connection into the Home Area Network (HAN).

“Tendril is dedicated to bridging the information gap that has long existed between utility companies and their customers and to giving them both a more informed means for managing and monitoring energy usage,” said Adrian Tuck, CEO of Tendril, Inc. “Our partnership with Silver Spring demonstrates our commitment to ensuring compatibility with existing infrastructure and offering our customers best-of-breed solutions.”

“We are delighted to have Tendril as a founding member of our Technology Alliance Program,” said John O’Farrell, Executive Vice President of Silver Spring Networks. “Working together, we have a tremendous opportunity to create new Smart Grid solutions that enable utilities to achieve operational efficiencies, reduce carbon emissions and offer their customers exciting new ways to monitor and manage their energy consumption.”

About Tendril

Tendril is bringing 21st century energy efficiency to the energy industry by providing technology that enables an important dialogue between consumers and their energy providers, allowing them to manage consumption and supply of energy in a smarter, more efficient way. Tendril’s technology plays a critical role in creating an open, extensible, standards-based, end-to-end energy ecosystem that connects consumer devices (like thermostats) to utilities’ back office applications. For more information about Tendril visit www.tendrilinc.com.

Tendril and Tendril EMS are trademarks of Tendril Networks. All other trademarks are property of their respective owners.

About Silver Spring Networks

Silver Spring Networks creates the critical networking infrastructure for the Smart Grid, known as a Smart Energy Network. Based on the Internet Protocol (IP) suite, it addresses the challenges of running multiple applications and devices on a common networking infrastructure using multiple transport technologies, dramatically improving efficiency, lowering costs and ensuring the reliable delivery of services. This smarter, more efficient grid could cut the growth rate of worldwide energy consumption by more than half over the next 15 years and drastically reduce carbon emissions. Silver Spring Networks was named a Technology Pioneer at the 2008 World Economic Forum in Davos, Switzerland and was a recipient of the GoingGreen and Brilliant Innovation Awards in 2007. For additional information, visit www.silverspringnetworks.com.

Media Contacts:

Tendril

Marie Bahl

mbahl@tendrilinc.com

303-468-4445

Silver Spring Networks

Lisa Magnuson

lisamag@silverspringnet.com

415-531-9199