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Friday Sep 6, 2024   
The end of summer is near… although the heat is not quite done in the West yet.  Temperatures are rocketing up in the short term with new highs for the summer, especially in Southern California.  In the Pacific Northwest the Mid-C bilateral price just reached the highest mark since the start of summer.  During these tight events the question of Resource Adequacy (RA) comes into play, and, in the case of the PNW we look at the Western Power Pool’s (WPP) Western Resource Adequacy Program (WRAP) as a program designed to improve reliability not only in the PNW but across the West. Figure 1 | West Daily Average CDDs by Region, Last Month and 15-Day Forecast  The WRAP had a bit of a setback earlier this year with the announcement that the first binding season ... » read more
Thursday Sep 5, 2024   
The great divide is in play this week as the regional temperatures east of the Rockies are moderate while all regions to the west are dealing with extreme levels, including the coastal areas within Southern California.  The population weighted average temperature level is record setting for the Golden State, topping the heat wave that moved through the state in early July 2024.  Figure 1 | California Flat Average Temperature (F) Forecast California is not the only region displaying such heat as Alberta and British Columbia are quite hot for this time of year starting today and the Pacific Northwest peeled off the 100-degree highs last week for a day or two only to have such weather return on Wednesday and again on Thursday/Friday.  It goes without mentioning that the ... » read more
Wednesday Sep 4, 2024   
It’s a story we’ve been following for a quite a while, since before the CPUC made their final decision on increasing the amount of gas allowed in Aliso Canyon. The ultimate decision made last fall was to increase the limit, leaving SoCal with an abundance of gas this spring and summer. Now, we’re entering the last few weeks of the summer season with the unofficial end to summer, Labor Day weekend, in the rearview. The story of SoCal’s excess natural gas storage isn’t done yet; it continues to impact the market as California braces for the next and, possibly, last heat wave of the quarter. In our most recent article, titled ‘Storage Galore and Demand No More’, we walked through the key shifts in market behavior and the nitty gritty details of the ... » read more
Tuesday Sep 3, 2024   
As summer draws to a close, energy demand typically begins to decline, leading us into the shoulder season. During the summer months, high temperatures drive up electricity consumption, resulting in higher load levels. This period is also characterized by typically lower wind generation, which raises net load (calculated as load minus renewable generation) and tightens grid conditions. Historically, as load decreases from its summer peak starting in September, wind generation begins to increase. To illustrate these dynamics, let’s examine the 12-month by 24-hour graph below, which shows load, wind generation, and net load over the past three years in SPP. Each year is represented by a different color line: blue for 2022, orange for 2023, and red for 2024. Figure 1 | 12x24 SPP ... » read more
Friday Aug 30, 2024   
In a previous blog this week, we referenced the growing amount of solar generation installed on the MISO grid, and how it is starting to have an impact on price formation. But just how much solar generation is there? Figure 1 | MISO Maximum Solar Generation by Year and Month The figure above shows the maximum solar output in MISO, in each month from 2020 through 2024 YTD (MISO reports zero solar generation until December of 2019). The reference line in each pane indicates the overall maximum solar output for the entire year. The image shows that solar buildout is happening at a rapid pace. The step up in maximum observed solar generation from 2023 to 2024 is the largest in MISO’s history so far. Between 2021, when solar first started getting added to regions besides the South, and ... » read more
Thursday Aug 29, 2024   
The underwhelming prices in ERCOT have been a frequent topic of conversation so far this summer, as even with new records reached in load and net load the day-ahead and real-time settlements have failed to live up to the hype.  We have written about the supply components on the renewable side and how that has played out in price formation in our recent Special Report, “A Different Summer in ERCOT”, while recent market flashes have touched on the recurring underperformance of load relative to day-ahead forecasts this summer.  Our latest Battery Report, “Clouds on the Horizon for ERCOT Batteries?” walks through the battery revenues in ERCOT this summer compared to 2023 and how bullish and optimistic expectations from earlier this year in the spring have ... » read more
Wednesday Aug 28, 2024   
In our blog last week, we wrote about the CAISO and ERCOT battery fleets breaking all-time dispatch records this August. This might make you think there were impressive arbitrage opportunities on those days, incentivizing more batteries to take advantage. This was certainly part of the story in Texas when real-time prices exceeded $1000/MWh. However, the real-time arbitrage opportunities for CAISO batteries weren’t exceptional on August 14th when the record was broken, although they were higher than other opportunities this August. In our latest battery report, titled ‘CAISO Fleet Growing Pains’, we discuss the conditions of the day and of August so far. Keep reading for a preview of the report or click the link above for access to the full writing. Figure 1 | Price ... » read more
Tuesday Aug 27, 2024   
Solar energy capacity in the Midcontinent Independent System Operator (MISO) region has seen explosive growth in 2024, nearly doubling its output to 6 GW early in Spring this year, increasing further over the summer. This rapid expansion is significantly influencing intra-day balancing and price formation, similar to trends previously observed in the Lone Star State. Despite solar being a smaller portion of MISO's energy mix compared to other regions like ERCOT and CAISO, its impact on the grid is becoming increasingly pronounced. Figure 1 | MISO 12x24 Profile Our Renewable Monthly Reports (sample) detail the changes to solar, wind, and battery operations and performance not just in MISO, but markets across the country. Sign up for our Platinum Plus eCommerce package to receive access to ... » read more
Monday Aug 26, 2024   
This weekend brought CAISO’s power prices lower than any day since June 16th (Father’s Day) with flat power settles going as low as $14.24 in SP15. While summer certainly isn’t over, fall is creeping up on us. The story is familiar from spring when SP15 hit deeply negative prices. Again this weekend, SP15 prices went negative as long as the sun was out, and evening ramp pricing stayed low as hydro, batteries, wind, and transmission had plenty of cheap MWs to provide before thermal generators needed to be turned to. This weekend gives us a reminder of the bearish territory CAISO power markets sit in as soon as the heat fades away. Figure 1 | CAISO Hourly Power LMP The above chart shows the hourly power pricing in both CAISO regions. Note the extended block of hours when ... » read more
Friday Aug 23, 2024   
Dam-generated hydro occupies a strange niche. To characterize it briefly, it has the combination of being simultaneously part dispatchable, part baseload, intermittent, the single largest source of generation in the Northwest, and the subject of controversy among people that on both sides are largely motivated to make environmentally conscious decisions. Broadly speaking, fuel resources may be grouped into two basic categories to describe the roles they fill in the ecology of the energy sector – dispatchable and non-dispatchable. In the dispatchable camp, we have coal and natural gas, which can essentially be turned on and off whenever needed (barring some constraints like minimum up time, minimum down time, etc.). In the non-dispatchable camp, we have resources like wind, solar ... » read more
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