Drafted by Gemini 2.5 Flash and reviewed by Claude Sonnet 4. Sourced from NordPool, SMHI, SvD Näringsliv, DN Ekonomi, SVT Ekonomi, and Second Opinion. Please note: This information is AI-generated and provided as-is without warranty. Readers should independently verify all data before making decisions.
Executive Summary#
The Swedish electricity market in SE3 on Saturday, March 28, 2026, experienced a significant decrease in Day-Ahead spot prices compared to the previous day and the preceding Saturday, primarily due to typical weekend demand reduction. The average spot price in SE3 dropped to 325.88 SEK/MWh, a sharp decline from Friday’s exceptional 605.61 SEK/MWh. A wide price spread persisted across bidding areas, with SE4 experiencing substantially higher prices than SE1 and SE2, exacerbated by ongoing transmission maintenance. Ancillary service markets, particularly mFRR EAM, showed considerable upward regulation activity and high spreads against Day-Ahead prices, indicating continued system balancing challenges, mirroring patterns seen earlier in the week. Several unplanned outages in neighboring countries and planned maintenance, including in SE3, contributed to market dynamics.
Day-Ahead Spot Prices#
| Metric | Price (SEK/MWh) | Price (EUR/MWh) |
|---|---|---|
| Average | 325.88 | 29.97 |
| Minimum | 79.40 | 7.30 |
| Maximum | 626.41 | 57.61 |
| Peak Average | 340.51 | 31.32 |
| Off-peak Average | 296.61 | 27.28 |
Commentary Day-Ahead spot prices in SE3 for March 28, 2026, averaged 325.88 SEK/MWh (29.97 EUR/MWh). This represents a substantial decrease of 46.2% from yesterday’s average of 605.61 SEK/MWh. This sharp drop highlights a clear weekend effect, with reduced industrial and commercial demand. The daily minimum price was observed at 79.40 SEK/MWh (7.30 EUR/MWh) at 12:00 CET, while the maximum reached 626.41 SEK/MWh (57.61 EUR/MWh) at 18:00 CET.
Comparing to historical trends, today’s average price of 325.88 SEK/MWh is significantly lower than the previous Saturday, March 21, which saw an average of 435.6 SEK/MWh. This indicates a softer weekend market this week. Furthermore, Friday’s average of 605.6 SEK/MWh was an outlier, being exceptionally high compared to the rest of the week’s averages, which ranged from 160.4 SEK/MWh to 435.6 SEK/MWh. The current average is also below the 7-day average of 368.4 SEK/MWh, reflecting a general easing of prices into the weekend. Peak hours (08:00-20:00 CET) averaged 340.51 SEK/MWh, slightly higher than off-peak hours (20:00-08:00 CET) at 296.61 SEK/MWh, a typical pattern for a weekend with lower daytime demand and an evening residential consumption peak.
Price Spread Across Bidding Areas#
| Area | Average (SEK/MWh) | Minimum (SEK/MWh) | Maximum (SEK/MWh) |
|---|---|---|---|
| SE1 | 147.61 | 54.15 | 262.81 |
| SE2 | 123.04 | 59.59 | 252.37 |
| SE3 | 325.88 | 65.67 | 640.11 |
| SE4 | 604.71 | 59.48 | 1709.6 |
Commentary A substantial price spread persisted across the Swedish bidding areas on March 28, highlighting ongoing transmission limitations. SE4 recorded the highest average price at 604.71 SEK/MWh, with a peak of 1709.6 SEK/MWh, indicating significant congestion and supply constraints in the southernmost bidding area. SE3, at 325.88 SEK/MWh, maintained a considerable premium over the northern areas. SE1 and SE2 continued to exhibit significantly lower average prices at 147.61 SEK/MWh and 123.04 SEK/MWh, respectively. This demonstrates persistent north-south transmission limitations, leading to higher prices in the demand-dense southern regions (SE3 and SE4) where generation capacity is often insufficient to meet local demand, relying on imports from the north or continental Europe. The wide spread between SE2 and SE3 (123.04 SEK/MWh vs. 325.88 SEK/MWh) is particularly pronounced and is likely exacerbated by the planned transmission maintenance impacting the SE2-SE3 interface, as announced by Svenska kraftnät. This maintenance reduces the import capacity into SE3 from the cheaper northern areas, forcing SE3 to rely more on local generation or more expensive imports from other constrained areas.
News & Geopolitical Context#
The market on March 28, 2026, was influenced by a mix of planned and unplanned unavailability notices across the Nordics and continental Europe, alongside broader geopolitical and economic news.
Energy-Specific News (UMMs):
- Frequent Unavailabilities in Belgium (FLEMALLE TH1): Electrabel SA reported multiple unplanned and planned unavailabilities for the FLEMALLE TH1 production facility in Belgium throughout the day (e.g., 23:28 CET, 23:27 CET, 21:05 CET, 20:42 CET, 20:38 CET, 19:45 CET, 19:15 CET, 15:10 CET, 17:18 CET on March 27). While some were dismissed, the sheer volume of these announcements, particularly unplanned failures, indicates potential instability in the Belgian generation fleet. This could indirectly affect Nordic prices if Belgium’s market dynamics influence broader continental European prices and thus import/export capabilities, especially for SE4.
- Unplanned Outage in Netherlands (ROTTERDAM 1): Electrabel SA reported an unplanned unavailability for the ROTTERDAM 1 production facility in the Netherlands at 21:23 CET due to failure. This further contributes to supply concerns in interconnected European markets.
- Unplanned Outages in Norway (Brokke, Tafjord 5, Øvre Vinstra, Solbergfoss 2, Saurdal - G4, Saurdal - G2): Several Norwegian hydropower plants experienced unplanned outages: Brokke (21:00 CET), Tafjord 5 (14:01 CET, and previously on March 27 at 11:07 CET), Øvre Vinstra (March 27, 16:02 CET), Solbergfoss 2 (March 27, 14:55 CET), Saurdal - G4 (March 27, 12:57 CET), and Saurdal - G2 (March 27, 10:55 CET). These failures in hydropower, a key source of flexible generation, can impact overall Nordic system balance and potentially reduce export capacity to Sweden, especially to SE1 and SE2, which then affects SE3 through transmission constraints.
- Unplanned Outages in Finland (Metsä Fibre Kemi, Lestijärven tuulipuisto, Martinlaakso EB01, Tornio / TW): Finland also saw multiple unplanned events, including Metsä Fibre Kemi (19:47 CET, and previously on March 27 at 12:30 CET, 19:27 CET), Lestijärven tuulipuisto wind park (March 27, 14:00 CET), Martinlaakso EB01 consumption unit (March 27, 07:45 CET), and Tornio / TW consumption unit (March 27, 04:37 CET). The wind park outage is particularly relevant for renewable generation output, while industrial consumption outages can temporarily reduce demand.
- Unplanned Outages in Latvia (HPP Plavinas - G01/G02): AS Latvenergo reported unplanned failures at HPP Plavinas G01 and G02 hydropower units in Latvia (March 27, 14:35 CET). This impacts the Baltic market, which is interconnected with the Nordic region.
- Planned Transmission Maintenance (PL↔LT, LT↔LV, SE3↔SE3A, SE2↔SE3, FI↔SE3, SE3↔SE4, SE4↔LT): Several planned transmission maintenance activities were announced for interconnections between Poland and Lithuania, and Lithuania and Latvia (e.g., 28.03.2026 11:06 CET, 10:32 CET, 10:05 CET, 09:59 CET). Crucially for Sweden, Svenska kraftnät announced planned maintenance on various internal and external transmission lines involving SE3 (SE3↔SE3A, SE2↔SE3, FI↔SE3, SE3↔SE4, SE4↔LT) starting March 27, 07:48 CET. This planned maintenance directly impacts import/export capabilities and internal price area separation, contributing to the wide price spreads observed today, particularly the high prices in SE3 and SE4 by reducing capacity from the cheaper northern areas.
- Planned Production Maintenance in SE3 (Slite): Vattenfall AB reported planned maintenance at the Slite production facility in SE3 (March 27, 13:58 CET). This local reduction in generation capacity in SE3 could contribute to higher prices in the area, especially during periods of high demand or limited import capacity.
- FCR Market Platform Migration: Svenska kraftnät announced that the FCR market will move to the Nordic MMS platform on April 14, 2026 (March 27, 09:01 CET). This is a significant operational change that market participants need to be aware of, potentially affecting liquidity and bidding strategies in the FCR market in the near future.
- Discussion on Combined Heat and Power (CHP): A SecondOpinion article from March 27, 05:37 CET, highlighted concerns about the dismantling of combined heat and power (CHP) capacity, arguing it removes valuable local electricity supply when most needed without sufficient discussion of consequences. This points to a longer-term structural risk for local grid stability and supply in Sweden.
- Government Opens for Majority Ownership in New Nuclear Power: DN Ekonomi reported on March 27, 11:28 CET, that the Swedish government is open to a majority state ownership in new nuclear power projects. This policy shift could accelerate new nuclear build, providing long-term stable, dispatchable power, but its impact on the market is many years away.
General News:
- Geopolitical Tensions (Middle East, Ukraine): News items from March 28 and March 27 consistently highlighted ongoing geopolitical tensions, including the Houthi movement as a new obstacle for the USA (19:43 CET), the US and Israeli ammunition stocks running low (11:13 CET), and reports of the first missile from Yemen identified by Israel (01:26 CET). The war in the Middle East continues to impact oil prices and global supply chains, while Russia’s difficulties in financing the war in Ukraine (March 27, 12:38 CET) indicate broader economic instability. These events contribute to overall market uncertainty and can indirectly influence energy prices through commodity markets and investor sentiment.
- AI and Semiconductor Industry: A SvD Näringsliv article (March 27, 20:17 CET) discussed how the war in the Middle East is severely impacting the semiconductor industry, risking a slowdown in AI expansion. While not directly energy-related, a robust tech sector is a significant electricity consumer, and disruptions could have long-term demand implications.
Ancillary Services#
FCR-N#
The average FCR-N price for March 28 was 15.92 EUR/MW, with a minimum of 14.10 EUR/MW and a maximum of 20.03 EUR/MW.
Commentary Today’s FCR-N average price of 15.92 EUR/MW marks an increase compared to yesterday’s 14.9 EUR/MW. Looking at the 7-day history, the FCR-N market has seen fluctuations, with a high of 30.5 EUR/MW on March 23 and a low of 14.9 EUR/MW on March 26 and 27. The current price is slightly above the recent low, but well below the peak earlier in the week, indicating that while there was a slight uptick, the market is not as tight as it was on March 23. The upcoming migration of the FCR market to the Nordic MMS platform on April 14, 2026, as announced by Svenska kraftnät, is a key development that market participants should monitor closely.
FCR-D#
For FCR-D, the average Up price was 1.82 EUR/MW (min 1.25, max 2.81), and the average Down price was 1.32 EUR/MW (min 1.16, max 1.79).
Commentary FCR-D prices today show relatively stable and low values for both up and down regulation. Compared to yesterday’s averages (4.4 EUR/MW for FCR-D Up and 2.2 EUR/MW for FCR-D Down), today’s prices are significantly lower. The 7-day history shows FCR-D Up prices ranging from 1.8 EUR/MW to 5.1 EUR/MW, and FCR-D Down prices from 2.0 EUR/MW to 9.9 EUR/MW. Today’s values are at the lower end of this historical range, suggesting ample capacity or lower demand for fast frequency restoration reserves, possibly due to the weekend effect on overall system load.
mFRR CM#
The average mFRR CM Up price was 2.70 EUR/MW (min 1.49, max 4.95), and the average mFRR CM Down price was 0.95 EUR/MW (min 0.10, max 2.47).
Commentary mFRR Capacity Market prices were relatively low today. The average Up price of 2.70 EUR/MW and Down price of 0.95 EUR/MW indicate that sufficient capacity was available to meet expected needs. These values are consistent with typical weekend patterns where overall system load is lower.
mFRR EAM#
The mFRR Energy Activation Market (EAM) showed an average imbalance price of 59.19 EUR/MWh, ranging from a minimum of -2.00 EUR/MWh to a maximum of 179.75 EUR/MWh. A total of 2423.0 MW was activated for upward regulation, and 259.0 MW for downward regulation. The system experienced 19 hours of upward regulation and 5 hours of downward regulation. The average spread against Day-Ahead prices was 30.83 EUR, with a maximum upward spread of 90.64 EUR and a maximum downward spread of -28.50 EUR.
| Hour (CET) | Imbalance (EUR/MWh) | Day-Ahead (EUR/MWh) | Spread (EUR) | Regulation |
|---|---|---|---|---|
| 00:00 | 14.04 | 42.54 | -28.50 | Down |
| 01:00 | 9.00 | 17.03 | -8.04 | Down |
| 02:00 | 15.59 | 13.19 | 2.40 | Up |
| 03:00 | 5.00 | 10.91 | -5.91 | Down |
| 04:00 | 47.76 | 10.27 | 37.49 | Up |
| 05:00 | 49.05 | 13.47 | 35.58 | Up |
| 06:00 | 9.72 | 15.81 | -6.09 | Down |
| 07:00 | 34.51 | 23.66 | 10.85 | Up |
| 08:00 | 74.27 | 28.94 | 45.33 | Up |
| 09:00 | 37.81 | 24.85 | 12.96 | Up |
| 10:00 | 1.38 | 14.01 | -12.64 | Down |
| 11:00 | 15.64 | 7.47 | 8.17 | Up |
| 12:00 | 18.04 | 6.91 | 11.13 | Up |
| 13:00 | 42.82 | 7.58 | 35.24 | Up |
| 14:00 | 55.21 | 15.36 | 39.85 | Up |
| 15:00 | 118.20 | 27.56 | 90.64 | Up |
| 16:00 | 110.09 | 41.03 | 69.06 | Up |
| 17:00 | 87.86 | 48.38 | 39.47 | Up |
| 18:00 | 123.04 | 54.52 | 68.52 | Up |
| 19:00 | 126.92 | 53.19 | 73.73 | Up |
| 20:00 | 107.66 | 52.41 | 55.25 | Up |
| 21:00 | 123.15 | 52.48 | 70.67 | Up |
| 22:00 | 123.67 | 50.99 | 72.68 | Up |
| 23:00 | 70.24 | 48.12 | 22.11 | Up |
Commentary The mFRR EAM market on March 28 showed a clear prevalence of upward regulation, with 19 hours of activation compared to only 5 hours of downward regulation. This indicates a consistent need to increase generation or decrease consumption to balance the system, particularly during the afternoon and evening. Total activated upward regulation was significantly higher at 2423.0 MW compared to 259.0 MW for downward regulation. The average imbalance price of 59.19 EUR/MWh and the average spread of 30.83 EUR against Day-Ahead prices highlight the cost of balancing the system. Notably, the maximum upward spread reached 90.64 EUR/MWh at 15:00 CET, coinciding with a period of rising Day-Ahead prices and potentially tighter system conditions. Conversely, some early morning hours (00:00, 01:00, 03:00, 06:00, 10:00 CET) saw downward regulation or negative spreads, suggesting periods of oversupply.
Comparing this to the 7-day ancillary history, today’s 19 hours of up-regulation is notably higher than yesterday’s 8 hours, and matches the high up-regulation seen on March 26 (19 hours). This suggests a recurring pattern of system tightness or forecast errors on certain days. The average imbalance price of 59.19 EUR/MWh is also higher than yesterday’s 37.8 EUR/MWh and the 7-day average of 47.2 EUR/MWh, further supporting the observation of a more challenging balancing day. This persistent need for upward regulation, despite being a weekend, points to underlying system flexibility challenges, potentially exacerbated by intermittent renewable generation and transmission constraints.
Weather Conditions#
| City | Temp Avg (°C) | Wind Avg (m/s) | Cloud Avg (%) | Precip Total (mm) |
|---|---|---|---|---|
| Göteborg | 5.2 | 4.4 | 7.0 | 6.1 |
| Linköping | 3.6 | 3.4 | 6.0 | 0.9 |
| Stockholm | 4.3 | 3.7 | 7.0 | 0.0 |
Commentary Weather forecasts for March 28 in SE3 indicate mild spring conditions. Average temperatures across the main cities in SE3 (Göteborg, Linköping, Stockholm) ranged from 3.6°C to 5.2°C, with moderate wind speeds between 3.4 m/s and 4.4 m/s. Cloud cover was relatively high, averaging 60-70%. Precipitation was low, with Göteborg expecting 6.1 mm and Linköping 0.9 mm, while Stockholm was forecast to be dry. These mild temperatures are consistent with the lower overall demand observed in the Day-Ahead market, as heating demand would be reduced.
Comparing to the 7-day weather history, today’s average temperature of 4.4°C (average of the three cities) is consistent with the past week’s average of 5.0°C. Precipitation is lower than the previous day (5.7 mm) and significantly lower than the mid-week peaks (150.1 mm on March 25 and 41.9 mm on March 24). The heavy precipitation earlier in the week (March 24-25) likely contributed to increased hydro reservoir levels, which could have eased hydro power availability and potentially put downward pressure on prices in the days following. However, the drier conditions today, combined with moderate wind and high cloud cover, suggest a mixed impact on the generation mix. While reduced precipitation means less immediate hydro inflow, the higher cloud cover might limit solar power output, contributing to the need for upward regulation observed in the mFRR EAM market during daytime hours, as other sources are needed to compensate.
Grid & Market Events#
Below is a summary of significant Unavailability Market Messages (UMMs) and other relevant grid events for March 28 and late March 27, 2026.
- 28.03.2026 23:28 CET - Unplanned Production Unavailability (BE, FLEMALLE TH1): Electrabel SA reported an unplanned outage at the FLEMALLE TH1 production unit due to a failure.
- 28.03.2026 23:27 CET - Planned Production Unavailability (BE, FLEMALLE TH1): Electrabel SA reported a planned outage at FLEMALLE TH1 for foreseen maintenance (test).
- 28.03.2026 21:23 CET - Unplanned Production Unavailability (NL, ROTTERDAM 1): Electrabel SA reported an unplanned outage at ROTTERDAM 1 due to a failure.
- 28.03.2026 21:05 CET - Planned Production Unavailability (BE, FLEMALLE TH1): Electrabel SA reported a planned outage at FLEMALLE TH1 for foreseen maintenance (test).
- 28.03.2026 21:05 CET - Unplanned Production Unavailability (BE, FLEMALLE TH1): Electrabel SA reported an unplanned outage at FLEMALLE TH1 due to a failure.
- 28.03.2026 21:00 CET - Unplanned Production Unavailability (NO2, Brokke): Å ENERGI VANNKRAFT AS reported an unplanned outage at the Brokke production unit due to a failure.
- 28.03.2026 19:47 CET - Unplanned Production Unavailability (FI, Metsä Fibre Kemi): Volue Oy reported an unplanned outage at Metsä Fibre Kemi due to technical issues.
- 28.03.2026 17:48 CET - Other Market Information (NL): Electrabel SA announced an event in NL from 29.03.2026 00:30 to 30.03.2026 00:00.
- 28.03.2026 17:24 CET - Unplanned Production Unavailability (SE1, Ligga - G3): Vattenfall AB reported an unplanned outage at the Ligga - G3 production unit due to a failure. This directly impacts generation capacity in Northern Sweden.
- 28.03.2026 14:05 CET - Other Market Information (BE): Electrabel SA announced an event in BE from 29.03.2026 03:00 to 29.03.2026 23:59.
- 28.03.2026 14:01 CET - Unplanned Production Unavailability (NO3, Tafjord 5): Tafjord Kraftproduksjon AS reported an unplanned outage at Tafjord 5 due to a failure with unknown duration.
- 28.03.2026 14:00 CET - Planned Production Unavailability (NO5, Lang Sima): Statkraft Energi AS reported a planned outage at Lang Sima for tunnel cleaning.
- 28.03.2026 13:46 CET - Other Market Information (IE): ESB Trading announced an event in IE from 28.03.2026 13:35 to 30.03.2026 18:30.
- 28.03.2026 12:30 CET - Unplanned Production Unavailability (FI, Metsä Fibre Kemi): Volue Oy reported an unplanned outage at Metsä Fibre Kemi due to technical issues.
- 28.03.2026 11:06 CET - Planned Transmission Unavailability (PL↔LT, LT↔PL): LITGRID AB reported planned maintenance affecting trading capacity.
- 28.03.2026 10:32 CET - Planned Transmission Unavailability (LT↔LV, LV↔LT): LITGRID AB reported planned maintenance affecting capacity calculation.
- 28.03.2026 10:19 CET - Planned Production Unavailability (NO5, Evanger - G2): Eviny Fornybar AS reported a planned outage at Evanger - G2 due to waterway restrictions.
- 28.03.2026 10:17 CET - Planned Production Unavailability (NO5, Evanger - G1): Eviny Fornybar AS reported a planned outage at Evanger - G1 due to waterway restrictions.
- 28.03.2026 10:05 CET - Planned Transmission Unavailability (PL↔LT, LT↔PL): LITGRID AB reported planned maintenance affecting capacity calculation.
- 28.03.2026 09:59 CET - Planned Transmission Unavailability (LT↔LV, LV↔LT): LITGRID AB reported planned maintenance affecting trading capacity.
- 28.03.2026 03:15 CET - Other Market Information (NL): Electrabel SA announced an event in NL from 28.03.2026 08:00 to 29.03.2026 00:00.
- 28.03.2026 01:12 CET - Other Market Information (IE): ESB Trading announced an event in IE from 27.03.2026 21:12 to 28.03.2026 00:30.
- 27.03.2026 23:37 CET - Planned Production Unavailability (BE, Vilvoorde BESS 2): Electrabel SA reported planned maintenance for a BESS unit in discharging mode.
- 27.03.2026 17:18 CET - Unplanned Production Unavailability (BE, FLEMALLE TH1): Electrabel SA reported an unplanned outage at FLEMALLE TH1 due to a failure.
- 27.03.2026 17:24 CET - Unplanned Production Unavailability (SE1, Ligga - G3): Vattenfall AB reported an unplanned outage at Ligga - G3 due to a failure.
- 27.03.2026 13:58 CET - Planned Production Unavailability (SE3, Slite): Vattenfall AB reported planned maintenance at the Slite production unit in SE3.
- 27.03.2026 10:22 CET - Unplanned Transmission Unavailability (DE-LU↔SE4, SE4↔DE-LU): TenneT TSO GmbH reported an unplanned transmission outage affecting flows between Germany/Luxembourg and SE4.
- 27.03.2026 07:48 CET - Planned Transmission Unavailability (SE3↔SE3A, SE2↔SE3, FI↔SE3, SE3↔SE4, SE4↔LT): Svenska kraftnät announced planned maintenance across several key transmission lines impacting SE3.
Commentary The grid saw a multitude of planned and unplanned events, both within Sweden and in interconnected European markets. The unplanned outages in Norway (Brokke, Tafjord 5) and Finland (Metsä Fibre Kemi) can reduce available generation for export to Sweden, potentially tightening supply, especially in the northern bidding areas. The unplanned transmission unavailability between DE-LU and SE4, reported on March 27, likely contributed to the high prices observed in SE4 today by limiting imports from continental Europe.
Crucially for SE3, the planned transmission maintenance across several internal and external lines, including SE2↔SE3, SE3↔SE4, and FI↔SE3, starting on March 27, significantly impacted SE3’s position. This maintenance reduces the import capacity into SE3 from the typically cheaper northern Swedish (SE2) and Finnish (FI) generation areas. Simultaneously, it can restrict export capacity from SE3 to the higher-priced SE4 area. This combination of reduced import and export capabilities directly contributes to the observed price separation, leading to SE3’s higher prices compared to SE1/SE2 and its sensitivity to local supply-demand balance. The planned maintenance at the Slite power plant in SE3 further reduces local generation capacity, increasing the reliance on imports and contributing to higher prices in the area amidst these transmission constraints. The continuous stream of UMMs from Electrabel SA regarding FLEMALLE TH1 in Belgium, both planned and unplanned, points to a broader pattern of operational challenges in the continental European generation fleet, which can indirectly affect Nordic markets through interconnected flows.
Implications for BESS in SE3#
For Battery Energy Storage System (BESS) operators in SE3, March 28 presented significant opportunities, particularly in the Day-Ahead and mFRR EAM markets.
The large price difference between the daily minimum of 79.40 SEK/MWh at 12:00 CET and the evening peak of 626.41 SEK/MWh at 18:00 CET in the Day-Ahead market offered substantial arbitrage potential. BESS could profit by charging during the low-price hours around midday when solar generation might be peaking and demand is lower, and discharging during the evening peak. The off-peak average price of 296.61 SEK/MWh and the peak average of 340.51 SEK/MWh also indicate a consistent spread for daily cycling.
The mFRR EAM market demonstrated even more compelling opportunities. The frequent and significant upward regulation, with 19 hours of activation and an average spread of 42.17 EUR/MWh for up-regulation, points to a strong and persistent demand for flexible resources. The maximum upward spread of 90.64 EUR/MWh at 15:00 CET highlights specific hours where BESS could capture substantial revenue by providing upward regulation. While there were some periods of downward regulation, the overall trend was towards system tightness, favoring BESS participation in providing upward flexibility. The higher average imbalance price compared to previous days further underscores the value of fast-responding assets. This pattern of high up-regulation hours, mirroring March 26, suggests that system balancing needs are a consistent feature, offering reliable revenue streams for BESS.
The persistent price spread between SE3 and the northern areas (SE1, SE2), exacerbated by planned transmission maintenance, implies that BESS in SE3 can benefit from local supply constraints, as prices are generally higher. The planned maintenance at Slite power plant further reduces local generation, increasing the likelihood of price volatility and balancing needs that BESS can address.
Outlook#
The outlook for the coming days suggests continued volatility in the Swedish electricity market, particularly in SE3. The persistent north-south transmission constraints, coupled with ongoing planned maintenance (especially those impacting SE3’s import/export capabilities) and the potential for further unplanned outages, will likely maintain significant price spreads between bidding areas. The mFRR EAM market is expected to remain active, especially if weather conditions (e.g., fluctuating wind or solar output) contribute to system imbalances. The upcoming migration of the FCR market to the Nordic MMS platform in mid-April will be a key event to monitor, as it could introduce new dynamics and opportunities for ancillary service providers. Geopolitical tensions continue to pose an underlying risk to overall energy market stability, potentially impacting fuel prices and overall market sentiment.