ISO Today

ISO Today

California ISO

102 ratings
58 reviews
Free

Details

  • Released
  • Updated
  • February 7, 2013
  • April 30, 2026

Features

ISO Today screenshot #1 for iPhone
ISO Today screenshot #2 for iPhone
ISO Today screenshot #3 for iPhone
ISO Today screenshot #4 for iPhone
ISO Today screenshot #5 for iPhone
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About

Track California's power grid status, energy prices, and renewable production. Receive alerts for conservation needs and monitor supply adequacy up to seven days ahead. View detailed supply breakdowns and historical data.

✓Monitor resource adequacy capacity
✓View grid status and demand
✓Renewables and supply graphs
✓Wholesale energy price map
✓Receive Flex Alerts
✓Track calendar events
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What users say

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What's New in ISO Today

5.5

April 30, 2026

• New social media screen • Prices: added GHG for nodes. DA will now only show ISO and EDAM regions

User reviews

New text size

On my iPhone 12 with current is the text size for things like alerts is way too small. Changing the IOS text size for this app doesn't change the size. Bummer, I really like the app but this makes it hard to use.

App does not work

The app on my iPhone 11 Pro gives an Error message, and no information.

Very nice app

The app has a lot of great informative information. The ability to get power network alerts is helpful for personal conservation to lower demand. The ability to get localized alerts would be helpful. Power problems in areas that do not have an effect locally is extraneous. Would be nice to be able to turn on/off alerts for specific locales.
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Very good app

This app has all the necessary information for the grid. Good job. There are a couple of problems one is that the alerts cannot be cleared. The other is that the page that displays the current state of the grid does not scroll properly when there are alerts on the grid status. I tried to refresh page or pull it but it is hard to use.
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Correctable errors, otherwise great

Basically the general functions of the app seem excellent, with the alerts directly useful to consumers, the other data interesting and educational.

Bugs:
* On a smaller-screen iPhone (e.g., 6s) the items below Calendar on the Home Screen are difficult-to-impossible to reach. “Daily Briefing” is only half-visible, and can be tapped with care, but “Twitter” and “About Flex Alert” can only be seen while holding a swipe-up but cannot be tapped. * “Calendar” crashes instantly and reproducibly.

Fix these bugs and my rating would be 4+. Otherwise it seems like a great app. I like the plotting options and all the informative “(i)”-button help screens.

Feature request:
* Add an ability to see multi-day and seasonal trends.

Support previous commenter’s request for a home-screen widget! Show the current alert status, maybe with time remaining before the alert ends, and perhaps the current demand.
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User experience

🐞

Reported Bugs

10 issues

App crashes on launch

Bug

Calendar crashes instantly

Bug

Alerts cannot be cleared

Bug

Page does not scroll properly with alerts

Bug

Items below Calendar unreachable on smaller screens

Bug

Text size for alerts too small and not adjustable

Bug

App crashes when trying to view alert

Bug

Alerts persist after reading

Bug

Notifications are persistent even after refreshing

Bug

App exits multiple times in a minute

Bug
✨

Requested Features

7 requests

Localized alerts

Feature

Ability to turn on/off alerts for specific locales

Feature

Multi-day and seasonal trends

Feature

Home-screen widget

Feature

See today's demand vs. last year/week

Feature

More differentiation on negative pricing levels

Feature

7-day history for a node

Feature

FAQ

What does the ISO Today app do?

The ISO Today app allows users to monitor the California ISO power grid's conditions, energy prices, and renewable energy production. It provides insights into resource adequacy, demand forecasts, and supply breakdowns, helping users understand the state's energy landscape.

What are the key features of ISO Today?

Key features include monitoring resource adequacy capacity up to seven days in advance, viewing grid status against current demand, and analyzing renewables and supply graphs. Users can also view wholesale energy prices, compare demand data, and receive important notifications like Flex Alerts.

Is ISO Today free to use?

Yes, ISO Today is a free mobile application. There are no costs associated with downloading or using its features, and it does not offer in-app purchases or display advertisements.

Who is the target audience for ISO Today?

This app is designed for anyone interested in the California and Nevada power grid, including consumers who want to stay informed about energy conservation needs, individuals tracking renewable energy trends, and those interested in wholesale energy market prices.

How does the app help with energy conservation?

The app provides Flex Alerts to notify users when energy conservation is needed. By monitoring grid status and supply adequacy, users can better understand when demand is high and conservation efforts are most impactful.