California ISO
@caiso.com
Official Bluesky account for the California ISO
⚡ Conserve energy: @flexalert.org
⬇️ ISO Today mobile app: http://bit.ly/3g0mEnm
💡 Visit www.caiso.com.
⚡ Conserve energy: @flexalert.org
⬇️ ISO Today mobile app: http://bit.ly/3g0mEnm
💡 Visit www.caiso.com.
Join us for the California ISO virtual town hall on Feb. 4 2026, for an update on the launch of the Extended Day-Ahead Market.⚡
💡Learn more about the event, key topics, and how to register in the latest Energy Matters blog: ow.ly/pU7750XTK2X
💡Learn more about the event, key topics, and how to register in the latest Energy Matters blog: ow.ly/pU7750XTK2X
January 9, 2026 at 12:18 AM
Join us for the California ISO virtual town hall on Feb. 4 2026, for an update on the launch of the Extended Day-Ahead Market.⚡
💡Learn more about the event, key topics, and how to register in the latest Energy Matters blog: ow.ly/pU7750XTK2X
💡Learn more about the event, key topics, and how to register in the latest Energy Matters blog: ow.ly/pU7750XTK2X
Reposted by California ISO
As 2025 comes to a close, the California ISO is celebrating a year of progress, partnership, and innovation.⚡
Here’s to an even brighter 2026, focused on collaboration and building an even stronger and more reliable grid, together!
💡Read the ISO’s Year in Review: ow.ly/y7Je50XNMYv
Here’s to an even brighter 2026, focused on collaboration and building an even stronger and more reliable grid, together!
💡Read the ISO’s Year in Review: ow.ly/y7Je50XNMYv
December 23, 2025 at 8:17 PM
As 2025 comes to a close, the California ISO is celebrating a year of progress, partnership, and innovation.⚡
Here’s to an even brighter 2026, focused on collaboration and building an even stronger and more reliable grid, together!
💡Read the ISO’s Year in Review: ow.ly/y7Je50XNMYv
Here’s to an even brighter 2026, focused on collaboration and building an even stronger and more reliable grid, together!
💡Read the ISO’s Year in Review: ow.ly/y7Je50XNMYv
As 2025 comes to a close, the California ISO is celebrating a year of progress, partnership, and innovation.⚡
Here’s to an even brighter 2026, focused on collaboration and building an even stronger and more reliable grid, together!
💡Read the ISO’s Year in Review: ow.ly/y7Je50XNMYv
Here’s to an even brighter 2026, focused on collaboration and building an even stronger and more reliable grid, together!
💡Read the ISO’s Year in Review: ow.ly/y7Je50XNMYv
December 23, 2025 at 8:17 PM
As 2025 comes to a close, the California ISO is celebrating a year of progress, partnership, and innovation.⚡
Here’s to an even brighter 2026, focused on collaboration and building an even stronger and more reliable grid, together!
💡Read the ISO’s Year in Review: ow.ly/y7Je50XNMYv
Here’s to an even brighter 2026, focused on collaboration and building an even stronger and more reliable grid, together!
💡Read the ISO’s Year in Review: ow.ly/y7Je50XNMYv
Happy Holidays from all of us at California ISO!⚡
Wishing you a season that’s bright and full of good energy. 🌟
Wishing you a season that’s bright and full of good energy. 🌟
December 23, 2025 at 5:40 PM
Happy Holidays from all of us at California ISO!⚡
Wishing you a season that’s bright and full of good energy. 🌟
Wishing you a season that’s bright and full of good energy. 🌟
Our November 2025 key stats are now available.
Explore the resources that kept the lights on and electricity flowing. ⚡
💡 Learn more: ow.ly/cimI50XKBAi
Explore the resources that kept the lights on and electricity flowing. ⚡
💡 Learn more: ow.ly/cimI50XKBAi
December 19, 2025 at 5:32 PM
Our November 2025 key stats are now available.
Explore the resources that kept the lights on and electricity flowing. ⚡
💡 Learn more: ow.ly/cimI50XKBAi
Explore the resources that kept the lights on and electricity flowing. ⚡
💡 Learn more: ow.ly/cimI50XKBAi
'Tis the season! Happy Holidays from all of us at the California ISO. ✨
December 18, 2025 at 7:43 PM
'Tis the season! Happy Holidays from all of us at the California ISO. ✨
📣 Join us for the California ISO’s last Governance and committees meetings of the year.
Dec. 16-17: Western Energy Markets (WEM) Governing Body (including the joint session)
Dec. 17-18: ISO Board of Governors (including the joint session)
💡Learn more: ow.ly/lj1k50XK0H6
Dec. 16-17: Western Energy Markets (WEM) Governing Body (including the joint session)
Dec. 17-18: ISO Board of Governors (including the joint session)
💡Learn more: ow.ly/lj1k50XK0H6
December 15, 2025 at 9:59 PM
📣 Join us for the California ISO’s last Governance and committees meetings of the year.
Dec. 16-17: Western Energy Markets (WEM) Governing Body (including the joint session)
Dec. 17-18: ISO Board of Governors (including the joint session)
💡Learn more: ow.ly/lj1k50XK0H6
Dec. 16-17: Western Energy Markets (WEM) Governing Body (including the joint session)
Dec. 17-18: ISO Board of Governors (including the joint session)
💡Learn more: ow.ly/lj1k50XK0H6
President & CEO Elliot Mainzer reflects on the California ISO's progress and shares how we’re powering forward in the latest episode of Wood Mackenzie's (@woodmac.com) Energy Gang podcast. 🎙️
🎧 Listen here: ow.ly/KvcN50XH29V
🎧 Listen here: ow.ly/KvcN50XH29V
California’s grid under pressure: affordability, AI, and the future of electricity markets | Wood Mackenzie
Explore how California is tackling rising electricity prices, wildfire risks, renewable energy integration, data-center load growth and regional power market reform as CAISO CEO Elliot Mainzer breaks ...
ow.ly
December 10, 2025 at 8:09 PM
President & CEO Elliot Mainzer reflects on the California ISO's progress and shares how we’re powering forward in the latest episode of Wood Mackenzie's (@woodmac.com) Energy Gang podcast. 🎙️
🎧 Listen here: ow.ly/KvcN50XH29V
🎧 Listen here: ow.ly/KvcN50XH29V
That's a wrap!
Thanks to support from the ISO’s governing entities, state government partners, customers, stakeholders, and colleagues throughout the region, 2025 was another year of progress for grid reliability and market evolution.
Get caught up on ISO’s 2025 highlights: ow.ly/x7b050XCjBq
Thanks to support from the ISO’s governing entities, state government partners, customers, stakeholders, and colleagues throughout the region, 2025 was another year of progress for grid reliability and market evolution.
Get caught up on ISO’s 2025 highlights: ow.ly/x7b050XCjBq
ISO 2025 Year in Review: Powering forward on reliability, shared progress, and a new framework for independent market governance | California ISO
ISO 2025 Year in Review: Powering forward on reliability, shared progress, and a new framework for independent market governance.
ow.ly
December 5, 2025 at 1:14 AM
That's a wrap!
Thanks to support from the ISO’s governing entities, state government partners, customers, stakeholders, and colleagues throughout the region, 2025 was another year of progress for grid reliability and market evolution.
Get caught up on ISO’s 2025 highlights: ow.ly/x7b050XCjBq
Thanks to support from the ISO’s governing entities, state government partners, customers, stakeholders, and colleagues throughout the region, 2025 was another year of progress for grid reliability and market evolution.
Get caught up on ISO’s 2025 highlights: ow.ly/x7b050XCjBq
As we reflect during this holiday season, we are grateful for the ongoing collaboration with our partners across the West. 🙏
Together, we're building a stronger, more reliable, and resilient power grid.
Here's to powering forward! ⚡
Together, we're building a stronger, more reliable, and resilient power grid.
Here's to powering forward! ⚡
November 27, 2025 at 5:16 PM
As we reflect during this holiday season, we are grateful for the ongoing collaboration with our partners across the West. 🙏
Together, we're building a stronger, more reliable, and resilient power grid.
Here's to powering forward! ⚡
Together, we're building a stronger, more reliable, and resilient power grid.
Here's to powering forward! ⚡
Our October 2025 key stats are now available.
Explore the resources that kept the lights on and electricity flowing. ⚡
💡 Learn more: ow.ly/WOoR50Xuq8V
Explore the resources that kept the lights on and electricity flowing. ⚡
💡 Learn more: ow.ly/WOoR50Xuq8V
November 25, 2025 at 10:11 PM
Our October 2025 key stats are now available.
Explore the resources that kept the lights on and electricity flowing. ⚡
💡 Learn more: ow.ly/WOoR50Xuq8V
Explore the resources that kept the lights on and electricity flowing. ⚡
💡 Learn more: ow.ly/WOoR50Xuq8V
📣 It’s live: The Western Energy Markets website has a new home at www.westernenergymarkets.com!
We’ve updated the URL address, and upgraded the site’s technology to improve functionality and enhance your user experience.
We’ve updated the URL address, and upgraded the site’s technology to improve functionality and enhance your user experience.
Home | Western Energy Markets
The western energy markets encompass the Western Energy Imbalance Market (WEIM) and the Extended Day-Ahead Market (EDAM).
www.westernenergymarkets.com
November 19, 2025 at 8:20 PM
📣 It’s live: The Western Energy Markets website has a new home at www.westernenergymarkets.com!
We’ve updated the URL address, and upgraded the site’s technology to improve functionality and enhance your user experience.
We’ve updated the URL address, and upgraded the site’s technology to improve functionality and enhance your user experience.
It was great to connect with The Nature Conservancy team! ⚡🌍
We enjoyed our conversation on transmission planning, grid modernization, and building a more sustainable energy future together.
We enjoyed our conversation on transmission planning, grid modernization, and building a more sustainable energy future together.
November 12, 2025 at 9:29 PM
It was great to connect with The Nature Conservancy team! ⚡🌍
We enjoyed our conversation on transmission planning, grid modernization, and building a more sustainable energy future together.
We enjoyed our conversation on transmission planning, grid modernization, and building a more sustainable energy future together.
Honoring our veterans today and every day. 🇺🇸
This Veterans Day, we salute the resilient heroes who have served our great country with unwavering dedication. We thank you for your commitment, bravery, and service to our nation.
Thank you for your service. 🙏
This Veterans Day, we salute the resilient heroes who have served our great country with unwavering dedication. We thank you for your commitment, bravery, and service to our nation.
Thank you for your service. 🙏
November 11, 2025 at 5:07 PM
Honoring our veterans today and every day. 🇺🇸
This Veterans Day, we salute the resilient heroes who have served our great country with unwavering dedication. We thank you for your commitment, bravery, and service to our nation.
Thank you for your service. 🙏
This Veterans Day, we salute the resilient heroes who have served our great country with unwavering dedication. We thank you for your commitment, bravery, and service to our nation.
Thank you for your service. 🙏
Stacey Crowley, our Vice President of External Affairs, participated in a NARUC roundtable discussion alongside Public Utility Commissioners, large electricity customers, and utility/regional transmission operators to address rising energy demand over the next decade. 💡⚡️
November 11, 2025 at 12:33 AM
Stacey Crowley, our Vice President of External Affairs, participated in a NARUC roundtable discussion alongside Public Utility Commissioners, large electricity customers, and utility/regional transmission operators to address rising energy demand over the next decade. 💡⚡️
A big thank you to everyone who joined our first Extended Day-Ahead Market (EDAM) Implementation Workshop this week, both in person and online! 🙌⚡
Key topics:
Day 1️⃣: Intertie Scheduling
Day 2️⃣: Updates on Congestion Revenue Rights Implementation & Resource Adequacy Imports
Key topics:
Day 1️⃣: Intertie Scheduling
Day 2️⃣: Updates on Congestion Revenue Rights Implementation & Resource Adequacy Imports
November 10, 2025 at 10:16 PM
A big thank you to everyone who joined our first Extended Day-Ahead Market (EDAM) Implementation Workshop this week, both in person and online! 🙌⚡
Key topics:
Day 1️⃣: Intertie Scheduling
Day 2️⃣: Updates on Congestion Revenue Rights Implementation & Resource Adequacy Imports
Key topics:
Day 1️⃣: Intertie Scheduling
Day 2️⃣: Updates on Congestion Revenue Rights Implementation & Resource Adequacy Imports
The California ISO team visited North America's first-ever clean renewable hydrogen powered microgrid and home. The project showcases innovative solutions as we power forward for a more sustainable energy future. ⚡
💡 Learn more: socalgas.com/sustainabili...
💡 Learn more: socalgas.com/sustainabili...
November 5, 2025 at 11:02 PM
The California ISO team visited North America's first-ever clean renewable hydrogen powered microgrid and home. The project showcases innovative solutions as we power forward for a more sustainable energy future. ⚡
💡 Learn more: socalgas.com/sustainabili...
💡 Learn more: socalgas.com/sustainabili...
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
🦇 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
October 31, 2025 at 4:31 PM
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
🦇 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
📣 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
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
October 30, 2025 at 9:38 PM
📣 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
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
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
⚡ 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
October 28, 2025 at 9:27 PM
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
⚡ 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
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
💡 Learn more in our latest Energy Matters blog post: ow.ly/NMMA50XfPvP
October 21, 2025 at 8:54 PM
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
💡 Learn more in our latest Energy Matters blog post: ow.ly/NMMA50XfPvP
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!
We truly appreciated the engaging discussion and look forward to future collaborations as we work together to power forward!
October 20, 2025 at 10:01 PM
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!
We truly appreciated the engaging discussion and look forward to future collaborations as we work together to power forward!
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/...
⚡ 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
October 17, 2025 at 10:57 PM
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/...
⚡ Batteries are powering forward reliability. www.latimes.com/environment/...
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.
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.
October 15, 2025 at 8:14 PM
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.
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.
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. ⚡
October 15, 2025 at 4:27 PM
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. ⚡