For much of March, the California Independent System Operator (CAISO) experienced significant fluctuations in power prices due to congestion, transmission outages and bearish pricing trends in SP-15. My team used Panorama to better understand and the Power Market Publications in Mosaic to explain the wholesale power market trends going on this month to our customers.
In March, Enverus launched CAISO into our Panorama platform, which allows us to see transmission outages and how they impact wholesale power markets by showing price decomposition, binding constraints and constraint shadow prices. The image below is our Panorama tool showing transmission flows throughout the Western Electricity Coordination Council.
Panorama helped my team get a better understanding of SP-15 prices and how bearish prices were going to be in the month of March. We were able to highlight some of the volatility in prices and the large spread between SP-15 and NP-15 with daily commentary and price forecasts in our Power Market Publications that come out daily in our Mosaic platform by 7:00 a.m. CT. For example, as early as the week of March 4, the Power Market Publications were highlighting the risk that transmission outages would have on SP-15 prices especially during high renewable periods.
Our price map showcased the wide basis, with NP15 maintaining the premium hub in the day-ahead market, while SP-15 struggled to transmit megawatts northward into Mid-C or NP-15. SP-15 on-peak prices averaged $7.57 and NP-15 $29.60 from March 1-27. The map below is the average RT prices from March 8-14 and is good example of how transmission outages and strong renewable generation in the south impacted wholesale power prices.
Through much of March, Panorama highlighted trouble spots, most notably the congestion in NP-15 around Moss Landing and in the southern San Francisco Bay area, which contributed to increased prices in NP-15. Transmission outages in key corridors, such as the Mid-way/Vincent/Los Banos hindered the flow of electricity toward the north, resulting in trapped megawatts (MWs) in SP-15. Furthermore, we saw transmission line outages in the Central Valley trapping MWs in the south and transmission work in the Imperial Valley leading to congestion on the Mexican border exacerbating supply imbalances. The SP-15 price forecast continues to take on a bearish outlook as we continue to see numerous outages and ongoing maintenance work so bearish conditions are expected to persist. There should be some relief by mid April as the DC line work ends and SP-15 can send flow up to Mid-C. In addition, power units planned outages begin to increase.
The relationship between transmission outages, renewable generation forecasts, and market dynamics emphasizes the complexity of managing wholesale electricity in CAISO. As the region grapples with infrastructure challenges and evolving renewable energy integration, traders and power market participants must navigate market uncertainties with care. Leveraging solutions like our Power Market Publications and Panorama can help better manage against these uncertainties in the power markets.
