in News Departments > New & Noteworthy
print the content item

The design framework for a California Independent System Operator Corp. (CAISO) energy imbalance market (EIM) has received approval from the CAISO board of governors.

CAISO says the EIM will allow western grid operators to voluntarily participate in a real-time energy market that enhances grid reliability and responsiveness, integrates renewable power, and saves wholesale energy costs.

"EIM marks a step forward in the West to more ably manage current complexities as the electric industry undergoes transformative changes to create a significantly cleaner energy network that enhances the utilization of renewables," says CAISO Board Chair Bob Foster.

"By leveraging the ISO's real-time market, a broad array of resources can be shared and economically dispatched," he adds. "This strengthens grid reliability through enhanced real-time visibility across neighboring grids while matching energy needs with the lowest-cost resources."

According to the system operator, its first EIM partner, PacifiCorp, has been working with the CAISO to prepare for implementation of the market, which is expected to go live on Oct. 1, 2014.

Significant increases in the amount of wind and solar power in recent years require grid operators to hold additional flexible generation in reserve to account for the variability of renewable resources, which are dependent on weather conditions, the CAISO notes. Without an EIM, operators generally must rely on generation assets within their balancing authority for any last-minute balancing.

The CAISO says the EIM includes only its real-time market and not its day-ahead market. Costs between balancing authorities are allocated according to cost-causation principles, and EIM balancing authorities still maintain all the operational responsibilities for serving their customers and maintaining reliability in their areas, the system operator adds.

Hybrid Energy Innovations

Hybrid Energy Innovations 2015
Latest Top Stories

Two Years After Superstorm Sandy, Utilities Highlight Grid Efforts

As the U.S. reflects on the monster hurricane that struck in October 2012, utilities note what they have done to help protect against future severe weather.


USDA Invests $1.4 Billion To Boost Rural Grids Around The Country

The U.S. Department of Agriculture (USDA) has announced more loan guarantees for rural power companies and renewable energy firms in 21 states.


SPP Raises Concerns About EPA's Proposed Clean Power Plan

Stakeholders around the U.S. are mulling over the Environmental Protection Agency's blueprint to cut emissions from existing power plants. The Southwest Power Pool has released its assessment of the plan.


Comverge, Constellation To Merge Demand Response Businesses

The two companies have announced a deal to combine their DR operations serving commercial and industrial customers and establish a new, standalone entity.


Grid-Scale Energy Storage Continues Making Inroads

A new report from Navigant Research highlights the biggest markets and most popular technologies for grid-scale energy storage.

S&C Electric_id176
edf_id180