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What are we doing to green the grid?

The ISO is committed to supporting important energy and environmental policies while maintaining reliability through a resilient power grid system.


Bringing cross-regional benefits through the energy imbalance market (EIM)

ISO advanced market systems automatically balance supply and demand for electricity every five minutes, dispatching the least-cost resources.  In October, this voluntary energy imbalance market service will be available to other grids operating in the West as a way to share reserves and integrate renewable resources across a larger geographic region--reliably and efficiently.  Learn more about EIM  


Integrating renewables reliably

The power mix

The ISO is focused on the reliable integration of zero-emission resources such as solar and wind power in support of the state's renewables portfolio standard.  Read more

Monitor today's renewable power production

Track yesterday's green output

Learn how flexible resources help renewable integration


Advancing technologies for
a smarter grid

We actively engage in activities that identify and prove next generation smart technologies. The exciting advances will forever change how electricity is produced and consumed.  Read more

View our smart grid roadmaps

View our energy storage roadmap 

Partner with the ISO on an advanced technology pilot

Read about ISO Storage Pilot Projects: Advancing a smarter grid

View our Large Scale Energy Storage Pilots


Creating opportunities for distributed energy resources

Distributed energy resources will be a valuable part of the resource mix to ensure reliable management of the green electric grid.  These resources are located on the distribution system and include energy storage, plug-in electric vehicles (PEV), demand response and combinations thereof that include photovoltaic solar.  The ISO is helping remove barriers and creating opportunities for these resources to provide grid services.

Read the Distributed Energy Resource Challenges and Barriers report by Olivine, Inc. 

View our demand response and energy efficiency roadmap 

View  the vehicle-grid integration roadmap

Track demand response stakeholder activities

Policy perspectives

The century-old electric grid is evolving into a modern and sophisticated machine to unlock a greener economy and fight off global warming.  Coordinating the alignment of environmental and energy goals is critical  to developing a cleaner, reliable and more weather-resilient power grid.  The ISO is collaborating with state and federal agencies, policymakers, stakeholders and end-user groups during this historic transformation to meet the challenges and opportunities ahead.

ISO, CEC and CPUC planning and procurement process alignment

Alignment of the transmission planning process with CEC Integrated Energy Policy Report (IEPR) demand forecast and CPUC Long Term Procurement Plan (LTPP) proceeding.

View the TPP-LTPP-IEPR Alignment Diagram

Read the TPP-LTPP-IEPR Alignment Explanatory Text

Climate change

California Climate Change Center

California Climate Change YouTube channel

Cap-and-trade program

Legislative priorities

Joint agency follow-up letter to Senators Padilla and Fuller on energy efficiency investments

Joint agency response to Senators Padilla and Fuller letter on energy efficiency investments