We’ve already been using this internally to track how load forecasts have been evolving in PJM ahead of next week’s extreme heat wave, which is currently forecasted to hit an all-time record high for load
We're about to release a new Forecast Analysis app on
@gridstatus.io, and I’m looking for users to test it.
Not only does it make pretty visualizations, it helps you understand how forecast vintages evolve over time, compare their historical accuracy, and more.
DM or reply for link!
Anyone else at the ERCOT Innovation Summit today? Come say hi!
A new nodal electricity market went live in Ontario early this morning! Shortly after, we had the data flowing into
@gridstatus.io
So far, LMPs have ranged from $-100/MWh to $367/MWh across the nearly 1000 new nodes in IESO
See the pretty map and more here: www.gridstatus.io/live/ieso
On February 19th, a battery north of Austin had a high relief shift factor against overlapping constraints, leading to all-time-high prices that approached $30,000/MWh.
We walked through how to use Grid Status to monitor, track, and review these situations 🔌💡
blog.gridstatus.io/exploring-ex...
congestion costs at a substation near the data centers dropping as load does with radar over the DMV
Histogram of 5-minute load swings in Dominion in 2024, this even is a huge outlier
Storage in ERCOT is a far larger part of daily operations than PJM Maximum hourly storage discharge as a % of coincident load per day
near-term battery queues across ISOs, PJM is the smallest at less than 100 MW
new blog!
this time we dove into the data around an event in PJM last summer where ~1.5 GW of datacenters suddenly dropped off the grid in northern Virginia, PJM's limited tools to deal with these kinds of events, and the sad state of batteries in the RTO 🔌💡
blog.gridstatus.io/byte-blackou...
Basically how we’ve built @gridstatus.io
Postgres + ECharts is a hard to beat combo
Prices spiked in ERCOT this morning, mostly driven by the cost of energy from marginal batteries.
We're in the depths of outage season with many thermal assets out for maintenance. In those conditions, even a modest morning load forecast beat can lead to a quick run up the supply stack. 🔌💡
This morning we published our longest blog to date, going deep on IESO in Ontario it nears the May 1st go-live date for its Market Renewal Program (MRP) 🔌💡
little 🧵 with some IESO background, check the blog for more figures and explanation of the MRP
blog.gridstatus.io/market-renew...
One of the better use cases for this message summary stuff that I’ve stumbled across so far
Now in blog form, with additional context and commentary! 🔌💡
blog.gridstatus.io/tariffs-chal...
ISO-NE and NYISO did make exigent circumstances filings with FERC on Friday 🔌💡
Basically saying "we need to do something right now, please approve, even if it's not perfect" (snipping ISO-NE)
www.iso-ne.com/static-asset...
nyisoviewer.etariff.biz/ViewerDocLib...
Crazy last few days in ERCOT. To summarize:
1. Record winter load peak
2. Record net load
3. Record battery discharge
4. Record solar generation
5. Record 5-minute LMPs at a specific node
PJM set a new winter demand record, ~145GW, displacing a decade-old peak
Prior to the new record, only a single day had cracked the winter top ten in the last decade. Impressively, the RTO accomplished this while exporting ~8 GW to neighbors.
💡🔌
TVA appears to have set a new demand record 📈
The previous record was ~34.5 GW on January 17th, just last year.
You can track this here: www.gridstatus.io/eia/TVA
A note of caution though, this EIA data can change as it gets updated, consider it preliminary in the moment.
💡🔌
ERCOT uses both phrases to describe batteries in their data. It's "Power Storage" in their fuel mix chart, but "Energy Storage Resources" in the dedicated graph
If you have a free Grid Status account you can check out example custom dashboards, like CAISO's, that go beyond the Live page in the main app.
Same goes for out east, where DA prices have been rising in NYISO and ISO-NE over the weekend as the system braces for cold and snow. 🔌💡
At some point, batteries will saturate the market.
Saturation has more than one definition, but the simplest is when there is enough battery capacity attempting to provide ancillary services that the price declines and operators begin to shift towards energy.
That moment may be now
The speed at which batteries have taken over ancillary services in ERCOT is impressive!
Such a nice example of how grid operations manifest in price signals
Load in the Far West of ERCOT has exploded
Expansion and electrification of oil and gas operations has driven load growth in ERCOT’s Far West weather zone. Likely the fastest load growth in the country over the past few years.
Batteries are reshaping ERCOT’s ancillary services procurement
Battery generation capacity has made up 50%+ of awards for reg up and responsive reserves since 2022. In these, coal and gas regularly account for <20% of capacity.
#energysky 🔌💡
Here's my Master's thesis proposal from 10 years ago. Crazy that I'm still trying to solve this problem, now focusing on the energy industry.
As @waldoch.bsky.social pointed out, I forgot to mention communicating/writing about the insights, which is a big part of what we do at @gridstatus.io
There's been plenty of talk about how ERCOT surpassed CAISO for peak utility-scale solar production in 2024. But did you know MISO also surpassed PJM?
Peak solar production in MISO shot up 144% during the past year, reaching over 8GW in October.
Lots of good insights in this thread!
Many big updates testing internally right now, but a surprise smaller one just shipped, new Pricing tab on each ISO's Live page.
Use Sync Tooltips to compare across charts
We have our list of improvements for this in the new year, but what do you want to see? 🔌💡
www.gridstatus.io/live/ercot#p...
Last night, PJM released preliminary values for its 2025 load forecast, which once again represent a significant increase from the previous year. These findings will be presented at the Load Analysis Subcommittee next Monday and published in final form early next year.
short 🧵
#energysky
glad it worked well
yep, that's fine. thanks for linking back to the site!
lmp, energy, and congestion for selected nodes in SPP
Returning to price, we can see an escalation across both the Energy and Congestion components when wind was lowest and most off from the forecast.
However, divergence occurred as wind began to recover. A negative congestion signal was sent to windy areas due to now-ramped thermal gen closer to load
