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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    

Stem to Install 1MW of Networked Behind-the-Meter Batteries in Hawaii

Hawaii is facing some serious disruptions from its growing share of distributed rooftop solar, and it’s going to try Stem’s distributed grid energy storage as a solution.On Thursday, utility Hawaiian Electric announced it had picked the Millbrae,...

Posted September 20, 2014    

Analytics for Solar and Energy Storage: Show Me the Money

Software that analyzes the complex interplay between solar PV, energy storage systems and customer energy use sounds like a great idea -- but is it something that companies are ready to pay for?This depends on the level of maturity of the industry...

Posted September 18, 2014    

Capacity Markets: The Future of European Demand Response?

Europe’s appetite for demand response is growing, not just to provide grid stability and energy balancing on its solar and wind power-influenced grids on a day-to-day basis, but for years to come. That’s opening up more money-making opportunities...

Posted September 17, 2014