2014

Stem and the Sacramento Municipal Utility District Partner to Explore Sacramento's Solar Energy Future Leading Utility to deploy Stem technology to analyze impact of PV on the grid

SACRAMENTO, Calif., March 5, 2013 /PRNewswire/ -- Stem, a leader in energy optimization, and the Sacramento Municipal Utility District (SMUD) announced today a pilot project to study the impact of high penetration solar photovoltaics (PV) on the grid. 

The two-year research project will utilize Stem's unique high-resolution data collection, cloud-based power system analytics and intelligent energy storage capabilities to reduce electricity costs for customers.

During the first phase of the project, Stem and SMUD will work with residential and commercial customer volunteers from a solar-powered community to install Stem's PowerMonitor data collection and analysis solution, examining the impact of a high penetration of PV on distribution circuit power quality. The data collected by Stem will inform SMUD of the amount of PV that can be added to a distribution feeder while maintaining grid stability and power quality.  These results will answer key questions including the effects of the second-by-second ramp rates of PV on SMUD's system, and how distributed storage can be used to mitigate these effects.

"We're looking forward to exploring the potential for the greater integration of solar energy into Sacramento's electric distribution system," said Mark Rawson from SMUD.  "Stem's technology will enable us to both gather information and test solutions to possibly enable more clean energy in our community."

Potential follow-on work may include SMUD deploying Stem's distributed storage systems to test the potential for automatic, fast-responding distributed storage to improve power quality for customers on circuits with a high penetration of PV. 

"SMUD has shown admirable leadership in their commitment to better integrating renewable energy into the grid," said Stem CEO Salim Khan.  "We look forward to working with their innovative R&D division to apply our core competencies in data, analytics, and power to pave the way for a sunnier energy future in Sacramento."

Stem is excited about the local and national implications this research will have on integrating PV into the existing grid and the potential of distributed storage as a tool to maintain reliability.

About Stem 

Stem, a leading provider of energy optimization services, combines big data, predictive analytics and energy storage to reduce electricity costs for businesses. The company's solution requires no compromises on building occupant comfort and offers unparalleled energy insights, allowing a comprehensive view into past, present and future energy use. As demands on the grid continue to increase, Stem's system enables good energy citizenship and unlocks the potential for expanded renewable energy integration. Headquartered in Millbrae, California, Stem is funded by leading investors Angeleno Group and Greener Capital. For more information, please visit http://stem.com.

About SMUD

As the nation's sixth largest community-owned electric service provider, SMUD has been providing low-cost, reliable electricity for more than 65 years to Sacramento County (and a small portion of Placer County). SMUD is a recognized industry leader and award winner for its innovative energy efficiency programs, renewable power technologies, and for its sustainable solutions for a healthier environment. SMUD is the first large California utility to receive more than 20 percent of its energy from renewable resources. For more information, visit smud.org.

SOURCE Stem



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