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In Texas, a Showdown Over How to Pay for Grid Batteries

Texas utility Oncor’s $5.2 billion grid battery plan is facing opposition from an unexpected source: the retail and generation arms of its own corporate parent.It's a conflict that underscores the complexities of incorporating energy storage into...

Posted December 9, 2014    

A Look at SCE's Procurement of Distributed Generation to Fill the Nuclear Gap

Over the past few weeks, we’ve been covering Southern California Edison’s 2.2-gigawatt grid services procurement for its West Los Angeles Basin region. With hundreds of megawatts of distributed solar power, energy storage, demand response and energy...

Posted December 5, 2014    

Inside SoCal Edison's Groundbreaking 2.2GW Grid Modernization Plan

Two weeks ago, utility Southern California Edison launched a real-world experiment in grid-edge economics, one that’s going to unfold in real time and at gigawatt scale.In a first for the utility industry, SCE announced it would buy hundreds of...

Posted November 24, 2014    

Hawaii to Test Smart Water Heaters as Grid Resources

Hawaiian Electric is trying out all sorts of distributed energy assets to help it manage its solar-impacted island electricity system, including behind-the-meter batteries, plug-in electric vehicles, and smart-meter-enabled energy disaggregation....

Posted November 22, 2014    

California Utilities Likely to Be Back in the EV Charging Business

As regulators consider lifting the 2011 ban, SCE and SDG&E plan $500 million in infrastructure investment.Three years ago, the state of California banned utilities from becoming investors in public EV charging, saying they represented an unfair...

Posted November 20, 2014    

Spirae Launches the Operating System for Distributed Energy

“An inverter next to a PV array is a very capable machine. We underutilize these assets for the most part.”The grid edge is a wild and wooly frontier. Rooftop solar PV, behind-the-meter batteries, energy-smart buildings and other forms of...

Posted November 7, 2014    

SolarCity, Nest to Energy Regulators: Open the Grid

Rooftop solar PV, behind-the-meter batteries, smart thermostats and appliances, and energy-aware home automation are all sources of energy, capacity and reliability for the power grid. So say the engineers who’ve built them -- and so say the...

Posted October 23, 2014    

Will Stem's Battery Systems Combined With Kyocera's Solar Boost Energy Storage Adoption?

How energy storage can turn customer-owned PV into a demand management toolThe convergence of rooftop solar PV and behind-the-meter batteries continues. On Tuesday, Japanese solar module giant Kyocera announced it has teamed up with Stem, a startup...

Posted October 21, 2014    

How Microsynchrophasors Could Keep Solar-Saturated Grids Stable

The electricity zipping around neighborhoods that have lots of rooftop solar PV is very different from conventional electricity. Not only does it sag and surge in response to the pattern of clouds crossing overhead, but it is also provided by lots...

Posted October 19, 2014    

Drought Reveals Water-Energy Connection, Cutting California's Hydropower in Half

California’s drought hasn’t just left its mark on dried-up fields and suburban lawns. It’s also sapped the state’s supply of hydropower, leaving natural-gas-fired generators -- and a growing share of solar and wind power -- to make up the difference...

Posted October 9, 2014    

EnerNOC: Court Challenges Can't Stop Demand Response

For the past few years, we’ve been covering the saga of FERC Order 745, the 2011 federal ruling that raised revenues for demand response providers across the country, only to be overturned by a federal court this summer, putting the promise of...

Posted October 5, 2014    

5 States Leading the Distributed Energy Revolution

We’re going to need some sophisticated software to integrate distributed rooftop PV, behind-the-meter batteries, plug-in EVs and smart-metered, energy-savvy homes, office buildings and factories into the grid. We’ll also need some sophisticated...

Posted September 23, 2014