About ISO Today
Monitor California ISO power grid conditions, prices and renewable production, receive notifications and track calendar events with this free mobile application. Features: . Monitor available resource adequacy capacity to...
Monitor California ISO power grid conditions, prices and renewable production, receive notifications and track calendar events with this free mobile application. Features: . Monitor available resource adequacy capacity to identify when energy supply might be tight, up to 7 days in advance. . View grid status and available capacity measured against the current demand and the forecasted peak. . View renewables and supply graphs as stacked charts. . View peak and daily production data for past dates on the renewables trend graph. . View breakdown of supply and renewables serving the ISO. . Monitor emissions. . View wholesale energy prices on the price map. Use the slider to easily filter out nodes based on Location Marginal Prices (LMP). . Compare demand and net demand plus historic data. . Users can receive Flex Alerts to notify them when conservation is needed, get energy system notifications, along with ability to add ISO meetings and events to their calendar. About the California ISO: As the nonprofit public-benefit corporation ensuring reliability for most of California's and a portion of Nevada's high-voltage power grid, the California Independent System Operator (ISO) is helping advance a smarter, cleaner, and more reliable energy future. The ISO operates a competitive energy market that balances supply with demand and has a key role in achieving clean energy goals in the West. For more information about California ISO, visit www.caiso.com.
Version History • New social media screen • Prices: added GHG for nodes. DA will now only show ISO and EDAM regions 5.5 Apr 30 • Fixed an issue where some Daily Briefing group labels appeared as black text on a black background. • Updated the Twitter link to point to the correct account feed on X. 4.8.1 Jan 20 · On the home page the Grid status section shows "in effect" and upcoming notifications, previously only "in effect" were visible. · Receive cancelled or ended push notifications for new and current versions of ISO Today. · Notifications page now shows ended and cancelled notifications, in addition to issued and updated notifications. · Notification icon on home page shows the number of notifications received rather than number of "in effect" events. · The counter badge on the Notification icon will now clear after viewing the Notification page. · App icon badge no longer shows number of "in effect" events. · Minor bug fixes and language changes. 4.8 11/10/2023 • Added new Hybrids page accessible from the Supply page. Includes new Hybrids pie and trend charts. • Hybrids trend chart provides line and stacked-graph options. • Hybrids trend chart provides peak and production data for past days using the date picker, then the Options drop down. • Removed most Hybrids from Batteries trend chart. • Batteries trend chart display can be broken down to show all batteries, stand-alone batteries and hybrid batteries using the Options drop down. • Batteries trend chart provides peaks and daily production data for past days using the date picker, then the Options drop down. • Updated content in information pages. 4.7 02/07/2023 What's New and Updated! • Available capacity is relabeled to Current capacity and represents all capacity on the system, loaded and unloaded. • Updated capacity status to include 1 hour available capacity and 4 hour available capacity. • Updated capacity status to include reserves. Reserves is included in 1 hour available capacity. • Added Current reserves to Demand screen overview. • Added forecasted peak time to Demand screen overview. • Added Demand response events to demand line. This will turn the Demand line red when Demand response significantly affects demand during emergencies. • Removed Today’s peak from demand screen overview for clarity. • Removed Historical peak from demand screen overview. It is still available in the information screen. 4.6 06/07/2022 Update to display new emergency notice statuses 4.5 04/28/2022 • Added available resource adequacy capacity graphs, single day and 7-day. • Added ability to pick date seven days in the future on demand and net demand graphs in order to view forecasts. • Added option to view wind and solar on net demand graph. • Added ability to view peaks and daily production data to renewables trend graph for past dates. • Added option to view demand data on renewables graph. • Added option to view supply and renewables graphs as stacked charts. • Alert count on app icon will disappear once alerts are viewed. Active alert count will still show on bell icon inside the app. • Set minimum iOS requirement to iOS 13 4.4 09/17/2021 - Moved "batteries" out of renewables graphs and into supply graphs to align with Renewable Portfolio Standard (RPS). - Changed "Renewables serving load" to "Renewables serving demand" to be consistent. - Minor bug fixes. 4.3 09/09/2019 Fixed a bug that caused crashes when viewing alerts. 4.2 12/31/2018 New! • Added Supply trend graph, removed renewables trend from supply page • Ability to open links in calendar items • Improved readability on price map popups Fixed • Contrast of text on calendar and Daily Briefing dates • Renewable percentage sometimes showing wrong percentage due to missing data • Crashes relating to calendar and price map • Other minor cosmetic improvements 4.1 11/28/2018 • Updated user interface with revised navigation. • View grid status and available capacity measured against the current demand and the forecasted peak. • View historical data, starting from 4/10/2018, on all trend graphs. • Compare today’s demand against historical demand. • View the net demand afternoon ramp as it occurs. • Added breakdown of supply and renewables. • View batteries and imports trend. • Monitor emissions. • Revised price map nodes with greater granularity. Added ability to filter out nodes based on price. • Added Daily Briefing replacing market notices. • Filter Daily Briefing and calendar based on categories. • Added access to additional reports under demand, supply and emissions. Other updates: • Removed fire map to eliminate data inconsistencies and errors. • Replaced renewables map with greater visualization of supply and renewables data. 4.0 10/16/2018 What’s New in Version 3.3.2? Minor issue fix What’s New in Version 3.3? Removed the word "Supply and" from the previously titled "Supply and Demand" graph because supply is no longer represented, the graph only shows demand and forecast values. Added a link to the Wind/Solar Curtailment Report at the bottom of the Today's Renewables screen next to the link to "View Yesterday’s Renewables Output" link. The Wind/Solar Curtailment Report offers a detailed accounting of the wind and solar renewable generation that was curtailed and the reasons why 3.3.2 05/25/2017 What’s New in Version 3.3? Removed the word "Supply and" from the previously titled "Supply and Demand" graph because supply is no longer represented, the graph only shows demand and forecast values. Added a link to the Wind/Solar Curtailment Report at the bottom of the Today's Renewables screen next to the link to "View Yesterday’s Renewables Output" link. The Wind/Solar Curtailment Report offers a detailed accounting of the wind and solar renewable generation that was curtailed and the reasons why 3.3 03/27/2017 What’s New in Version 3.2.4? • Maintenance and data updates What’s New in Version 3.2.3? • Implemented bug fixes to resolve intermittent stability issues What’s New in Version 3.2.2? • Implemented bug fixes to resolve intermittent stability issues What’s New in Version 3.2.1? • Implemented bug fixes to resolve intermittent stability issues What’s New in Version 3? • Expanded price maps to include the fifteen-minute market and EIM participant regions • Added mobile access to market notices and ISO tweets What’s New in Version 2.1.2? • Update to make the graph functionality compatible with iOS8 What's New in Version 2.1.1? • Faster alert delivery time, with option to elect which alerts you get on your device • New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability • Extended calendar to include 3 months of events with additional details about the locations and relevant web links Version 3 of ISO Today is compatible with iOS7 and up for smart phones, tablets and iPads. Apple devices with the iOS6 operating system can still download Version 2 from the app store. 3.2.4 01/20/2017 What’s New in Version 3.2.3? • Implemented bug fixes to resolve intermittent stability issues What’s New in Version 3.2.2? • Implemented bug fixes to resolve intermittent stability issues What’s New in Version 3.2.1? • Implemented bug fixes to resolve intermittent stability issues What’s New in Version 3? • Expanded price maps to include the fifteen-minute market and EIM participant regions • Added mobile access to market notices and ISO tweets What’s New in Version 2.1.2? • Update to make the graph functionality compatible with iOS8 What's New in Version 2.1.1? • Faster alert delivery time, with option to elect which alerts you get on your device • New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability • Extended calendar to include 3 months of events with additional details about the locations and relevant web links Version 3 of ISO Today is compatible with iOS7 and up for smart phones, tablets and iPads. Apple devices with the iOS6 operating system can still download Version 2 from the app store. 3.2.3 10/06/2016 What’s New in Version 3.2.2? • Implemented bug fixes to resolve intermittent stability issues What’s New in Version 3.2.1? • Implemented bug fixes to resolve intermittent stability issues What’s New in Version 3.1? • Implemented bug fixes to resolve intermittent stability issues What’s New in Version 3? • Expanded price maps to include the fifteen-minute market and EIM participant regions • Added mobile access to market notices and ISO tweets What’s New in Version 2.1.2? • Update to make the graph functionality compatible with iOS8 What's New in Version 2.1.1? • Faster alert delivery time, with option to elect which alerts you get on your device • New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability • Extended calendar to include 3 months of events with additional details about the locations and relevant web links Version 3 of ISO Today is compatible with iOS7 and up for smart phones, tablets and iPads. Apple devices with the iOS6 operating system can still download Version 2 from the app store. 3.2.2 09/19/2016 What’s New in Version 3.2.1? • Implemented bug fixes to resolve intermittent stability issues What’s New in Version 3.1? • Implemented bug fixes to resolve intermittent stability issues What’s New in Version 3? • Expanded price maps to include the fifteen-minute market and EIM participant regions • Added mobile access to market notices and ISO tweets What’s New in Version 2.1.2? • Update to make the graph functionality compatible with iOS8 What's New in Version 2.1.1? • Faster alert delivery time, with option to elect which alerts you get on your device • New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability • Extended calendar to include 3 months of events with additional details about the locations and relevant web links Version 3 of ISO Today is compatible with iOS7 and up for smart phones, tablets and iPads. Apple devices with the iOS6 operating system can still download Version 2 from the app store. 3.2.1 06/09/2016 What’s New in Version 3.2? • Implemented bug fixes to resolve intermittent stability issues What’s New in Version 3.1? • Implemented bug fixes to resolve intermittent stability issues What’s New in Version 3? • Expanded price maps to include the fifteen-minute market and EIM participant regions • Added mobile access to market notices and ISO tweets What’s New in Version 2.1.2? • Update to make the graph functionality compatible with iOS8 What's New in Version 2.1.1? • Faster alert delivery time, with option to elect which alerts you get on your device • New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability • Extended calendar to include 3 months of events with additional details about the locations and relevant web links Version 3 of ISO Today is compatible with iOS7 and up for smart phones, tablets and iPads. Apple devices with the iOS6 operating system can still download Version 2 from the app store. 3.2 06/01/2016 What’s New in Version 3.1? • Implemented bug fixes to resolve intermittent stability issues What’s New in Version 3? • Expanded price maps to include the fifteen-minute market and EIM participant regions • Added mobile access to market notices and ISO tweets What’s New in Version 2.1.2? • Update to make the graph functionality compatible with iOS8 What's New in Version 2.1.1? • Faster alert delivery time, with option to elect which alerts you get on your device • New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability • Extended calendar to include 3 months of events with additional details about the locations and relevant web links Version 3 of ISO Today is compatible with iOS7 and up for smart phones, tablets and iPads. Apple devices with the iOS6 operating system can still download Version 2 from the app store. 3.1 09/01/2015 What’s New in Version 3? • Expanded price maps to include the fifteen-minute market and EIM participant regions • Added mobile access to market notices and ISO tweets What’s New in Version 2.1.2? • Update to make the graph functionality compatible with iOS8 What's New in Version 2.1? • Minor bug fix to alert icon on menu • Auto refresh of app when app is opened from sleep mode What's New in Version 2.1.1? • Faster alert delivery time, with option to elect which alerts you get on your device • New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability • Extended calendar to include 3 months of events with additional details about the locations and relevant web links Version 3 of ISO Today is compatible with iOS7 and up for smart phones, tablets and iPads. Apple devices with the iOS6 operating system can still download Version 2 from the app store. 3.0 06/11/2015 What’s New in Version 2.1.2? • Update to make the graph functionality compatible with iOS8 What's New in Version 2.1.1? • Minor bug fix to alert icon on menu • Auto refresh of app when app is opened from sleep mode What's New in Version 2.1? • Faster alert delivery time, with option to elect which alerts you get on your device • New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability • Extended calendar to include 3 months of events with additional details about the locations and relevant web links Please note: Version 2 and up of ISO Today is compatible with iOS6 and up for iPhones, iPods and iPads. 2.1.2 12/20/2014 What's New in Version 2.1.1? • Minor bug fix to alert icon on menu • Auto refresh of app when app is opened from sleep mode What's New in Version 2.1? • Faster alert delivery time, with option to elect which alerts you get on your device • New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability • Extended calendar to include 3 months of events with additional details about the locations and relevant web links Please note: Version 2.0 and above of ISO Today is compatible with iOS6 and up for iPhones, iPods and iPads. 2.1.1 07/08/2014 • Faster alert delivery time, with option to elect which alerts you get on your device • New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability • Extended calendar to include 3 months of events with additional details about the locations and relevant web links Please note: Version 2.1 of ISO Today is compatible with iOS6 and up for iPhones, iPods and iPads. 2.1 07/01/2014 • Improved graphs, including enhanced zooming, individual line on and off toggling and output data displayed at any point in time and hourly. • Interactive price map with the current hour’s wholesale energy prices and cost breakdowns for thousands of price points across the grid. • Renewable map of wind and solar plants connected to the ISO grid, their current aggregated energy production, and weather, cloud and fire conditions. • Simplified menu. • Expanded support to include tablets and iPads. Please note: This version of ISO Today is compatible with iOS6 and up for smart phones, tablets and iPads. Smart phones with older operating systems can continue to use app version 1.03. 2.0 05/27/2014 Bug Fixes 1.03 06/12/2013
Previous Versions
Here you can find the changelog of ISO Today since it was posted on our website on 2016-10-01 22:56:09.
The latest version is 5.5 and it was updated on 2026-06-27 07:16:19. See below the changes in each version.
ISO Today version 5.5
Updated At: 2026-06-07
Changes: Version History • New social media screen
• Prices: added GHG for nodes. DA will now only show ISO and EDAM regions 5.5 Apr 30 • Fixed an issue where some Daily Briefing group labels appeared as black text on a black background.
• Updated the Twitter link to point to the correct account feed on X. 4.8.1 Jan 20 · On the home page the Grid status section shows "in effect" and upcoming notifications, previously only "in effect" were visible.
· Receive cancelled or ended push notifications for new and current versions of ISO Today.
· Notifications page now shows ended and cancelled notifications, in addition to issued and updated notifications.
· Notification icon on home page shows the number of notifications received rather than number of "in effect" events.
· The counter badge on the Notification icon will now clear after viewing the Notification page.
· App icon badge no longer shows number of "in effect" events.
· Minor bug fixes and language changes. 4.8 11/10/2023 • Added new Hybrids page accessible from the Supply page. Includes new Hybrids pie and trend charts.
• Hybrids trend chart provides line and stacked-graph options.
• Hybrids trend chart provides peak and production data for past days using the date picker, then the Options drop down.
• Removed most Hybrids from Batteries trend chart.
• Batteries trend chart display can be broken down to show all batteries, stand-alone batteries and hybrid batteries using the Options drop down.
• Batteries trend chart provides peaks and daily production data for past days using the date picker, then the Options drop down.
• Updated content in information pages. 4.7 02/07/2023 What's New and Updated!
• Available capacity is relabeled to Current capacity and represents all capacity on the system, loaded and unloaded.
• Updated capacity status to include 1 hour available capacity and 4 hour available capacity.
• Updated capacity status to include reserves. Reserves is included in 1 hour available capacity.
• Added Current reserves to Demand screen overview.
• Added forecasted peak time to Demand screen overview.
• Added Demand response events to demand line. This will turn the Demand line red when Demand response significantly affects demand during emergencies.
• Removed Today’s peak from demand screen overview for clarity.
• Removed Historical peak from demand screen overview. It is still available in the information screen. 4.6 06/07/2022 Update to display new emergency notice statuses 4.5 04/28/2022 • Added available resource adequacy capacity graphs, single day and 7-day.
• Added ability to pick date seven days in the future on demand and net demand graphs in order to view forecasts.
• Added option to view wind and solar on net demand graph.
• Added ability to view peaks and daily production data to renewables trend graph for past dates.
• Added option to view demand data on renewables graph.
• Added option to view supply and renewables graphs as stacked charts.
• Alert count on app icon will disappear once alerts are viewed. Active alert count will still show on bell icon inside the app.
• Set minimum iOS requirement to iOS 13 4.4 09/17/2021 - Moved "batteries" out of renewables graphs and into supply graphs to align with Renewable Portfolio Standard (RPS).
- Changed "Renewables serving load" to "Renewables serving demand" to be consistent.
- Minor bug fixes. 4.3 09/09/2019 Fixed a bug that caused crashes when viewing alerts. 4.2 12/31/2018 New!
• Added Supply trend graph, removed renewables trend from supply page
• Ability to open links in calendar items
• Improved readability on price map popups
Fixed
• Contrast of text on calendar and Daily Briefing dates
• Renewable percentage sometimes showing wrong percentage due to missing data
• Crashes relating to calendar and price map
• Other minor cosmetic improvements 4.1 11/28/2018 • Updated user interface with revised navigation.
• View grid status and available capacity measured against the current demand and the forecasted peak.
• View historical data, starting from 4/10/2018, on all trend graphs.
• Compare today’s demand against historical demand.
• View the net demand afternoon ramp as it occurs.
• Added breakdown of supply and renewables.
• View batteries and imports trend.
• Monitor emissions.
• Revised price map nodes with greater granularity. Added ability to filter out nodes based on price.
• Added Daily Briefing replacing market notices.
• Filter Daily Briefing and calendar based on categories.
• Added access to additional reports under demand, supply and emissions.
Other updates:
• Removed fire map to eliminate data inconsistencies and errors.
• Replaced renewables map with greater visualization of supply and renewables data. 4.0 10/16/2018 What’s New in Version 3.3.2?
Minor issue fix
What’s New in Version 3.3?
Removed the word "Supply and" from the previously titled "Supply and Demand" graph because supply is no longer represented, the graph only shows demand and forecast values.
Added a link to the Wind/Solar Curtailment Report at the bottom of the Today's Renewables screen next to the link to "View Yesterday’s Renewables Output" link. The Wind/Solar Curtailment Report offers a detailed accounting of the wind and solar renewable generation that was curtailed and the reasons why 3.3.2 05/25/2017 What’s New in Version 3.3?
Removed the word "Supply and" from the previously titled "Supply and Demand" graph because supply is no longer represented, the graph only shows demand and forecast values.
Added a link to the Wind/Solar Curtailment Report at the bottom of the Today's Renewables screen next to the link to "View Yesterday’s Renewables Output" link. The Wind/Solar Curtailment Report offers a detailed accounting of the wind and solar renewable generation that was curtailed and the reasons why 3.3 03/27/2017 What’s New in Version 3.2.4?
• Maintenance and data updates
What’s New in Version 3.2.3?
• Implemented bug fixes to resolve intermittent stability issues
What’s New in Version 3.2.2?
• Implemented bug fixes to resolve intermittent stability issues
What’s New in Version 3.2.1?
• Implemented bug fixes to resolve intermittent stability issues
What’s New in Version 3?
• Expanded price maps to include the fifteen-minute market and EIM participant regions
• Added mobile access to market notices and ISO tweets
What’s New in Version 2.1.2?
• Update to make the graph functionality compatible with iOS8
What's New in Version 2.1.1?
• Faster alert delivery time, with option to elect which alerts you get on your device
• New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability
• Extended calendar to include 3 months of events with additional details about the locations and relevant web links
Version 3 of ISO Today is compatible with iOS7 and up for smart phones, tablets and iPads. Apple devices with the iOS6 operating system can still download Version 2 from the app store. 3.2.4 01/20/2017 What’s New in Version 3.2.3?
• Implemented bug fixes to resolve intermittent stability issues
What’s New in Version 3.2.2?
• Implemented bug fixes to resolve intermittent stability issues
What’s New in Version 3.2.1?
• Implemented bug fixes to resolve intermittent stability issues
What’s New in Version 3?
• Expanded price maps to include the fifteen-minute market and EIM participant regions
• Added mobile access to market notices and ISO tweets
What’s New in Version 2.1.2?
• Update to make the graph functionality compatible with iOS8
What's New in Version 2.1.1?
• Faster alert delivery time, with option to elect which alerts you get on your device
• New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability
• Extended calendar to include 3 months of events with additional details about the locations and relevant web links
Version 3 of ISO Today is compatible with iOS7 and up for smart phones, tablets and iPads. Apple devices with the iOS6 operating system can still download Version 2 from the app store. 3.2.3 10/06/2016 What’s New in Version 3.2.2?
• Implemented bug fixes to resolve intermittent stability issues
What’s New in Version 3.2.1?
• Implemented bug fixes to resolve intermittent stability issues
What’s New in Version 3.1?
• Implemented bug fixes to resolve intermittent stability issues
What’s New in Version 3?
• Expanded price maps to include the fifteen-minute market and EIM participant regions
• Added mobile access to market notices and ISO tweets
What’s New in Version 2.1.2?
• Update to make the graph functionality compatible with iOS8
What's New in Version 2.1.1?
• Faster alert delivery time, with option to elect which alerts you get on your device
• New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability
• Extended calendar to include 3 months of events with additional details about the locations and relevant web links
Version 3 of ISO Today is compatible with iOS7 and up for smart phones, tablets and iPads. Apple devices with the iOS6 operating system can still download Version 2 from the app store. 3.2.2 09/19/2016 What’s New in Version 3.2.1?
• Implemented bug fixes to resolve intermittent stability issues
What’s New in Version 3.1?
• Implemented bug fixes to resolve intermittent stability issues
What’s New in Version 3?
• Expanded price maps to include the fifteen-minute market and EIM participant regions
• Added mobile access to market notices and ISO tweets
What’s New in Version 2.1.2?
• Update to make the graph functionality compatible with iOS8
What's New in Version 2.1.1?
• Faster alert delivery time, with option to elect which alerts you get on your device
• New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability
• Extended calendar to include 3 months of events with additional details about the locations and relevant web links
Version 3 of ISO Today is compatible with iOS7 and up for smart phones, tablets and iPads. Apple devices with the iOS6 operating system can still download Version 2 from the app store. 3.2.1 06/09/2016 What’s New in Version 3.2?
• Implemented bug fixes to resolve intermittent stability issues
What’s New in Version 3.1?
• Implemented bug fixes to resolve intermittent stability issues
What’s New in Version 3?
• Expanded price maps to include the fifteen-minute market and EIM participant regions
• Added mobile access to market notices and ISO tweets
What’s New in Version 2.1.2?
• Update to make the graph functionality compatible with iOS8
What's New in Version 2.1.1?
• Faster alert delivery time, with option to elect which alerts you get on your device
• New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability
• Extended calendar to include 3 months of events with additional details about the locations and relevant web links
Version 3 of ISO Today is compatible with iOS7 and up for smart phones, tablets and iPads. Apple devices with the iOS6 operating system can still download Version 2 from the app store. 3.2 06/01/2016 What’s New in Version 3.1?
• Implemented bug fixes to resolve intermittent stability issues
What’s New in Version 3?
• Expanded price maps to include the fifteen-minute market and EIM participant regions
• Added mobile access to market notices and ISO tweets
What’s New in Version 2.1.2?
• Update to make the graph functionality compatible with iOS8
What's New in Version 2.1.1?
• Faster alert delivery time, with option to elect which alerts you get on your device
• New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability
• Extended calendar to include 3 months of events with additional details about the locations and relevant web links
Version 3 of ISO Today is compatible with iOS7 and up for smart phones, tablets and iPads. Apple devices with the iOS6 operating system can still download Version 2 from the app store. 3.1 09/01/2015 What’s New in Version 3?
• Expanded price maps to include the fifteen-minute market and EIM participant regions
• Added mobile access to market notices and ISO tweets
What’s New in Version 2.1.2?
• Update to make the graph functionality compatible with iOS8
What's New in Version 2.1?
• Minor bug fix to alert icon on menu
• Auto refresh of app when app is opened from sleep mode
What's New in Version 2.1.1?
• Faster alert delivery time, with option to elect which alerts you get on your device
• New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability
• Extended calendar to include 3 months of events with additional details about the locations and relevant web links
Version 3 of ISO Today is compatible with iOS7 and up for smart phones, tablets and iPads. Apple devices with the iOS6 operating system can still download Version 2 from the app store. 3.0 06/11/2015 What’s New in Version 2.1.2?
• Update to make the graph functionality compatible with iOS8
What's New in Version 2.1.1?
• Minor bug fix to alert icon on menu
• Auto refresh of app when app is opened from sleep mode
What's New in Version 2.1?
• Faster alert delivery time, with option to elect which alerts you get on your device
• New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability
• Extended calendar to include 3 months of events with additional details about the locations and relevant web links
Please note: Version 2 and up of ISO Today is compatible with iOS6 and up for iPhones, iPods and iPads. 2.1.2 12/20/2014 What's New in Version 2.1.1?
• Minor bug fix to alert icon on menu
• Auto refresh of app when app is opened from sleep mode
What's New in Version 2.1?
• Faster alert delivery time, with option to elect which alerts you get on your device
• New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability
• Extended calendar to include 3 months of events with additional details about the locations and relevant web links
Please note: Version 2.0 and above of ISO Today is compatible with iOS6 and up for iPhones, iPods and iPads. 2.1.1 07/08/2014 • Faster alert delivery time, with option to elect which alerts you get on your device
• New “net demand” graph representing the variability in demand and supply that the ISO must counter balance to maintain grid reliability
• Extended calendar to include 3 months of events with additional details about the locations and relevant web links
Please note: Version 2.1 of ISO Today is compatible with iOS6 and up for iPhones, iPods and iPads. 2.1 07/01/2014 • Improved graphs, including enhanced zooming, individual line on and off toggling and output data displayed at any point in time and hourly.
• Interactive price map with the current hour’s wholesale energy prices and cost breakdowns for thousands of price points across the grid.
• Renewable map of wind and solar plants connected to the ISO grid, their current aggregated energy production, and weather, cloud and fire conditions.
• Simplified menu.
• Expanded support to include tablets and iPads.
Please note: This version of ISO Today is compatible with iOS6 and up for smart phones, tablets and iPads. Smart phones with older operating systems can continue to use app version 1.03. 2.0 05/27/2014 Bug Fixes 1.03 06/12/2013
ISO Today version 4.8.1
Updated At: 2026-01-20
Changes: • Fixed an issue where some Daily Briefing group labels appeared as black text on a black background.
• Updated the Twitter link to point to the correct account feed on X.
ISO Today version 4.8
Updated At: 2023-11-10
Changes: Nov 10, 2023
Version 4.8
· On the home page the Grid status section shows "in effect" and upcoming notifications, previously only "in effect" were visible.
· Receive cancelled or ended push notifications for new and current versions of ISO Today.
· Notifications page now shows ended and cancelled notifications, in addition to issued and updated notifications.
· Notification icon on home page shows the number of notifications received rather than number of "in effect" events.
· The counter badge on the Notification icon will now clear after viewing the Notification page.
· App icon badge no longer shows number of "in effect" events.
· Minor bug fixes and language changes.
ISO Today version 4.7
Updated At: 2023-02-07
Changes: Feb 7, 2023
Version 4.7
• Added new Hybrids page accessible from the Supply page. Includes new Hybrids pie and trend charts.
• Hybrids trend chart provides line and stacked-graph options.
• Hybrids trend chart provides peak and production data for past days using the date picker, then the Options drop down.
• Removed most Hybrids from Batteries trend chart.
• Batteries trend chart display can be broken down to show all batteries, stand-alone batteries and hybrid batteries using the Options drop down.
• Batteries trend chart provides peaks and daily production data for past days using the date picker, then the Options drop down.
• Updated content in information pages.
ISO Today version 4.6
Updated At: 2022-06-07
Changes: Jun 7, 2022 Version 4.6
What's New and Updated!
• Available capacity is relabeled to Current capacity and represents all capacity on the system, loaded and unloaded.
• Updated capacity status to include 1 hour available capacity and 4 hour available capacity.
• Updated capacity status to include reserves. Reserves is included in 1 hour available capacity.
• Added Current reserves to Demand screen overview.
• Added forecasted peak time to Demand screen overview.
• Added Demand response events to demand line. This will turn the Demand line red when Demand response significantly affects demand during emergencies.
• Removed Today’s peak from demand screen overview for clarity.
• Removed Historical peak from demand screen overview. It is still available in the information screen.
ISO Today version 4.5
Updated At: 2022-04-28
Changes: Apr 28, 2022 Version 4.5
Update to display new emergency notice statuses
ISO Today version 4.4
Updated At: 2021-09-17
Changes: Sep 17, 2021 Version 4.4
• Added available resource adequacy capacity graphs, single day and 7-day.
• Added ability to pick date seven days in the future on demand and net demand graphs in order to view forecasts.
• Added option to view wind and solar on net demand graph.
• Added ability to view peaks and daily production data to renewables trend graph for past dates.
• Added option to view demand data on renewables graph.
• Added option to view supply and renewables graphs as stacked charts.
• Alert count on app icon will disappear once alerts are viewed. Active alert count will still show on bell icon inside the app.
• Set minimum iOS requirement to iOS 13
ISO Today version 4.3
Updated At: 2019-09-09
Changes: Sep 9, 2019 Version 4.3
- Moved "batteries" out of renewables graphs and into supply graphs to align with Renewable Portfolio Standard (RPS).
- Changed "Renewables serving load" to "Renewables serving demand" to be consistent.
- Minor bug fixes.
ISO Today version 3.2.2
Updated At: 2013-02-07
ISO Today version 4.3
Updated At: 1970-01-01
Changes: 9 Eyl 2019 Version 4.3
- Moved "batteries" out of renewables graphs and into supply graphs to align with Renewable Portfolio Standard (RPS).
- Changed "Renewables serving load" to "Renewables serving demand" to be consistent.
- Minor bug fixes.
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