Author | Lightnews

California ISO @caiso.com · 4d

Happy Halloween! 👻

🦇 Beware of energy vampires lurking in your home, draining your power.

⚡ Try these tricks to scare off them off and enjoy spooktacular energy savings: ow.ly/X00S50Xk4TM

1

California ISO @caiso.com · 5d

📣 NEWS: The WEIM continues to drive cost savings across the West.

In Q3 2025, the WEIM delivered over $412M in economic benefits to participants, pushing total cumulative savings to $7.82B since the market’s launch in 2014. ⚡

💡 Learn more about the impact: ow.ly/sAgu50XkC7Q

2

California ISO @caiso.com · 7d

Get into the spooky season with us! 👻

⚡ Energy vampires are lurking - drawing enough power out of your home to waste energy and slay your wallet.

Our new Energy Matters blog post has tips for spooktacular savings: ow.ly/ig0E50XjomT

2 6

California ISO @caiso.com · 14d

Tracking greenhouse gas (GHG) emissions is key for many organizations. We're working to make GHG emissions from market dispatch more transparent, helping others better understand the impact of their electricity use. ⚡

💡 Learn more in our latest Energy Matters blog post: ow.ly/NMMA50XfPvP

1 2

California ISO @caiso.com · 15d

Big thanks to Utah Associated Municipal Power Systems (UAMPS) for visiting us! ⚡

We truly appreciated the engaging discussion and look forward to future collaborations as we work together to power forward!

3

California ISO @caiso.com · 18d

In 2020, the ISO-managed grid had just ~122 MW of battery storage. Since then, more than 14,000MW 🔋 have been added to the grid—a real game changer for reliability during summer periods of peak demand.

⚡ Batteries are powering forward reliability. www.latimes.com/environment/...

California made it through another summer without a Flex Alert. Thank batteries, experts say

Batteries that pair with clean solar and wind energy or just bolster electrical grids in general have completely taken off and are making a big difference on the California grid.

www.latimes.com

4 12

California ISO @caiso.com · 20d

October is Energy Awareness Month! ⚡

Let’s bring our energy together for a brighter, cleaner future. Small changes can make a big impact—check out energy saving tips at @flexalert.bsky.social and FlexAlert.org.

3

California ISO @caiso.com · 20d

Last week, our President & CEO, Elliot Mainzer, joined government leaders and environmental partners at the Los Angeles Business Council Sustainability Summit to discuss the rising energy demand and innovations for a clean energy future in California. ⚡

3

California ISO @caiso.com · 21d

Our September 2025 key stats document is now available. ⚡

Get insight into all the resources that bolstered our power grid and enhanced reliability during the peak summer season.

💡 Learn more: ow.ly/yER850XbcY0

1 3

California ISO @caiso.com · 22d

On Indigenous Peoples' Day and everyday, we honor and celebrate the rich history and cultures of Indigenous communities.

5

California ISO @caiso.com · 25d

Busy week at the California ISO, as we hosted the WEIM Modeling and Resource Registration Forum (Oct. 7) and New Resource Implementation Forum (Oct. 9). ⚡

A great opportunity for us to engage with the stakeholder community.

Thank you to all of those who participated! 🙌

1

California ISO @caiso.com · 25d

Last week, Anna McKenna and Neil Millar participated in panel discussions on emerging energy topics at the Fall 2025 joint CREPC-WIRAB meeting in Portland, OR.

We are proud to share our contributions to shaping the future of energy. ⚡

1

California ISO @caiso.com · 26d

With summer behind us, we’re preparing for the winter season. ❄️⚡

💡 Collaboration and planning are key to ensuring the power grid is prepared to handle any challenges this season. ow.ly/8i9Z50X8SIH

1

California ISO @caiso.com · Oct 2

Thank you for 5 electrifying years, Elliot Mainzer! ⚡

Five years of progress driven by collaboration and innovation.

Here’s to many more years of powering forward together.

#teamCAISO

1

California ISO @caiso.com · Sep 21

On this first ever “Sun” Day, we celebrate the power of clean energy and a brighter future ahead. ☀️

This summer, the sun’s incredible power helped us achieve a new solar peak record of 21,774 MW on July 30. 😎

💡 Learn more: www.caiso.com/todays-outlook

California ISO @caiso.com · Sep 19

We look forward to following through with all our partners to deliver reliable and cost-effective energy to consumers throughout the West. Let's keep powering forward together! 🤝 2/

2

California ISO @caiso.com · Sep 19

BIG NEWS: Governor Newsom signed AB 825, a historic milestone for the California ISO and significant step toward establishing independent governance for our regional energy markets. 1/🧵

ow.ly/8RT450WZGPM

Gov. Newsom signs landmark legislation for independent governance of Western electricity markets | California ISO

The California ISO manages the flow of electricity on high-voltage power lines, operates a wholesale energy market, and oversees infrastructure planning.

ow.ly

1 3

California ISO @caiso.com · Sep 18

Happy National Clean Energy week! ⚡

We remain committed to operating the most environmentally sustainable power grid in the world, paving the way to a brighter energy future.

💡 Explore the renewable resources powering our grid: caiso.com/todays-outlook

3

California ISO @caiso.com · Sep 17

Advocates are calling the passage of California’s AB 825 a “huge win” for consumers across the West, further advancing our mission of delivering reliable, cost-effective energy while deepening collaboration across the region. ⚡

Read more: ow.ly/9Owa50WYoG4

Regional Western electricity market closer to reality following California vote

The passage of AB 825 caps a years-long push by many clean energy advocates to regionalize the Western energy markets and sets the stage for the creation of a regional transmission organization.

ow.ly

4

California ISO @caiso.com · Sep 15

Our August Key Stats are now available. ⚡

Take a closer look at the resources that kept the grid running strong last month. ➡️ ow.ly/zBH350WUP97

1

California ISO @caiso.com · Sep 13

This milestone was shaped by years of successful and evolving regional collaboration. We remain fully committed to the successful launch of EDAM & will offer technical support throughout the transition. 3/
ow.ly/4RKV50WWm57

1

California ISO @caiso.com · Sep 13

While the bill awaits the Governor’s signature, here’s what to know: As the Pathways Committee develops the framework for the new regional organization, we'll coordinate closely with them and stakeholders to ensure alignment with legislative requirements. 2/

1 2

California ISO @caiso.com · Sep 13

Major milestone for the West: We commend the California Legislature, Governor Gavin Newsom, and the diverse coalition of stakeholders for their leadership in advancing AB 825 — a crucial next step toward independent governance of Western energy markets. THREAD 1/🧵

ow.ly/T3aY50WWm44

1 1 4

California ISO @caiso.com · Sep 12

This week, the California Senate unanimously (40-0) confirmed Severin Borenstein and Jan Schori to CAISO's Board of Governors.⚡️

Congratulations to Severin and Jan on their reappointment! We look forward to their continued leadership and expertise in enhancing reliability.

2

California ISO @caiso.com · Sep 12

This week, we welcomed the Australian Energy Market Operator (AEMO) to California ISO! ⚡

Sharing expertise is key as energy markets tackle similar challenges and opportunities—integrating renewables, maintaining grid reliability, and innovating for a sustainable future.