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Home > Stay Informed > Clean, green grid

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.


Installed renewable resources (as of 10/03/2018)

Installed renewable resources

NOTE — Reporting Net Dependable Capacity only (numbers are rounded). Only fully commercial units are counted, not partials or test energy, as reported via the Master Generating File and captured in the Master Control Area Generating Capability List found on OASIS under “Atlas Reference”.
*Includes 20 MW of storage integrated with power plants


Regional Collaboration

Learn more about the Western Energy Imbalance Market and the potential benefits of a fully integrated regional grid.

Read about it here

Integrating renewables reliably

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. 

Using renewables to operate the grid

Monitor today's renewable energy production 

Click here for past renewable energy production, wind and solar curtailments and greenhouse gas emissions reports

Fast facts

Understand how time-of-use periods help



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 about advanced technologies


Smart Grid Roadmap
Energy Storage Roadmap

Fast facts

Related stakeholder activities

Energy storage interconnection
Energy storage and aggregated distributed energy resource education forum

Click here to find out how to partner with the ISO on an advanced technology pilot


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.



Demand Response and Energy Efficiency Roadmap
Vehicle-Grid Integration Roadmap



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

Greenhouse gas reduction

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