ISO Today vs PJM Now
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ISO Today
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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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.
PJM Now
Monitor electricity usage, grid status, and wholesale power prices in real-time for the PJM Interconnection region. Get alerts for price changes and grid conditions, and view power flow and fuel mix.
- Real-time electricity use tracking
- Wholesale power price monitoring
- Interactive map of prices by location
- PJM grid condition alerts
- Power flow visualization
- Current fuel mix display
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Track electricity use, power grid conditions and wholesale power prices in real time throughout the region PJM Interconnection serves with the simple and easy-to-use PJM Now app. • See wholesale power prices and trends broken down by location on an interactive map • Receive alerts when wholesale power prices in your area reach the level of your choosing • Receive alerts about PJM grid conditions for your chosen area • Track real-time electricity use and compare it to the day’s forecasted use • See how power flows in and out of the region PJM serves • See the current fuel mix PJM Interconnection, founded in 1927, ensures the reliability of the high-voltage electric power system serving 65 million people in all or parts of Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia and the District of Columbia. PJM coordinates and directs the operation of the region’s transmission grid, which includes over 84,042 miles of transmission lines; administers a competitive wholesale electricity market; and plans regional transmission expansion improvements to maintain grid reliability and relieve congestion. Visit PJM at www.pjm.com.
Screenshots
Verdict
The clearest difference is review sentiment: ISO Today at 74% against PJM Now's 22%. ISO Today also leads on rating (4.2 vs 3.6) and ratings volume (103 vs 26). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ISO Today holds the better App Store score, 4.2 against 3.6. Both are backed by a comparable volume of ratings — 103 and 26 respectively. Written reviews point the same way: 74% of ISO Today's written reviews are positive against 22% of PJM Now's.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.
| Parameter | ISO Today | PJM Now |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (103 ratings) — better | 3.6 (26 ratings) |
| Positive reviews | 74.1% of reviews — better | 22.2% of reviews |
| Number of ratings | 103 — better | 26 |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 11 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | California Independent System Operator Corporation | PJM Interconnection |
Customer experience
ISO Today
PJM Now
Bugs and requests
ISO Today
Reported bugs
10 issues- App crashes on launch
- Calendar crashes instantly
- Alerts cannot be cleared
- Page does not scroll properly with alerts
- Items below Calendar unreachable on smaller screens
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- Text size for alerts too small and not adjustable
- App crashes when trying to view alert
- Alerts persist after reading
- Notifications are persistent even after refreshing
- App exits multiple times in a minute
Requested features
7 requests- Localized alerts
- Ability to turn on/off alerts for specific locales
- Multi-day and seasonal trends
- Home-screen widget
- See today's demand vs. last year/week
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- More differentiation on negative pricing levels
- 7-day history for a node
PJM Now
Not enough reviews yet to summarise bugs or requests.
In-app purchases
ISO Today
No in-app purchases
PJM Now
No in-app purchases







