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 2026-03-20 experienced significantly elevated day-ahead spot prices, averaging 1100.78 SEK/MWh. This marks a substantial increase from the previous day and the 7-day average, driven primarily by persistent geopolitical tensions surrounding the “Irankriget” and its impact on global fuel prices. Despite mild weather conditions that would typically suppress demand, the market maintained a high price floor. Significant price spreads across bidding areas continue, with SE3 and SE4 facing much higher costs due to transmission constraints. Ancillary service markets, particularly mFRR EAM, showed a notable shift towards increased up-regulation compared to the previous day, though down-regulation remained dominant overall. Planned maintenance outages across the Nordic grid further contribute to market dynamics and regional price variations.
Day-Ahead Spot Prices#
| Metric | SEK/MWh | EUR/MWh |
|---|---|---|
| Average Price | 1100.78 | 101.93 |
| Minimum Price | 361.88 | 33.51 |
| Maximum Price | 1879.56 | 174.05 |
| Peak Average | 1116.45 | |
| Off-Peak Average | 1069.44 |
Commentary: Day-ahead spot prices in SE3 on 2026-03-20 averaged 1100.78 SEK/MWh (101.93 EUR/MWh), a notable increase of 181.34 SEK/MWh (19.72%) from the previous day’s average of 919.44 SEK/MWh. This also represents a significant premium over the 7-day average of 613.2 SEK/MWh. The market exhibited substantial volatility, with prices peaking at 1879.56 SEK/MWh (174.05 EUR/MWh) at 07:00 CET and dropping to a minimum of 361.88 SEK/MWh (33.51 EUR/MWh) at 12:00 CET. Peak hours (06:00-08:00 CET and 16:00-19:00 CET) saw an average of 1116.45 SEK/MWh, while off-peak hours averaged 1069.44 SEK/MWh, indicating sustained high prices throughout the day, primarily driven by geopolitical uncertainty and high fuel costs.
Trend Analysis#
Today’s price floor of 361.88 SEK/MWh at midday represents a significant increase compared to yesterday’s midday lows, which ranged from 184.97 SEK/MWh to 230.08 SEK/MWh. This indicates a higher baseline cost of electricity, suggesting that market fundamentals are tighter or that external factors are exerting stronger upward pressure. Over the past seven days, average wind speeds have steadily declined from 7.4 m/s on March 13th to 2.1-2.3 m/s today. This reduction in wind generation likely necessitates increased reliance on more expensive thermal power, contributing to the sustained high spot prices. In the mFRR market, a notable shift occurred: today saw 6 hours of up-regulation compared to only 2 hours yesterday, while down-regulation decreased from 22 hours yesterday to 18 hours today. This indicates a slight tightening of the system balance, with the need for upward flexibility increasing, possibly due to higher demand or reduced available generation at certain times, despite the overall dominance of down-regulation.
Price Spread Across Bidding Areas#
| Area | Average Price (SEK/MWh) | Minimum Price (SEK/MWh) | Maximum Price (SEK/MWh) |
|---|---|---|---|
| SE1 | 202.29 | 89.85 | 345.79 |
| SE2 | 134.19 | 37.90 | 260.04 |
| SE3 | 1100.78 | 244.06 | 2178.94 |
| SE4 | 1387.11 | 282.07 | 2593.09 |
Commentary: A significant price disparity persists across the Swedish bidding areas. SE3 and SE4 experienced substantially higher average prices at 1100.78 SEK/MWh and 1387.11 SEK/MWh, respectively. In stark contrast, northern areas SE1 and SE2 maintained much lower averages of 202.29 SEK/MWh and 134.19 SEK/MWh. This wide spread, particularly between SE2 and SE3, suggests continued transmission constraints limiting power flow from the generation-rich north to the demand centers in southern Sweden. The “Planned, Unavailability of electricity facilities: Transmission, SE2 -> SE3” event, published today, further highlights ongoing grid maintenance affecting inter-area capacity, contributing to these persistent price differences.
News & Geopolitical Context#
The market on 2026-03-20 remains heavily influenced by the escalating “Irankriget” and its profound impact on global energy markets. News reports highlight a continued surge in gasoline and diesel prices, with diesel increasing over 2 SEK/liter to 24-25 SEK/liter in just two days. This directly translates to higher electricity production costs, especially for thermal power plants. The International Energy Agency (IEA) has proposed measures like working from home and reducing travel to tackle what it calls “the biggest disruption in the history of the global oil market.”
Geopolitical developments indicate intensified attacks, with Iran bombing a refinery in Kuwait and an Iranian Revolutionary Guard spokesperson killed by USA/Israel forces. Discussions are reportedly underway to open the Strait of Hormuz, which, if successful, could alleviate some pressure on oil and gas supplies. However, Iran’s demand for oil payments in Chinese Yuan suggests a broader geopolitical shift and potential for further market instability.
Domestically, Svenska kraftnät reported that the cold and expensive winter of 2025/2026 led to reduced consumption in Sweden, avoiding electricity shortages. However, they also noted that high Norwegian electricity consumption at “Norgepris” was not positive for Sweden. A new report from the Klimatpolitiska rådet criticizes the government’s climate policy as “insufficient,” potentially impacting long-term energy transition strategies. Svenska kraftnät also published the auction schedule for EPADs for Q2 2026, aiming to improve price hedging opportunities. Furthermore, news about planned small modular reactor (SMR) construction in Gävle by Blykalla signals future shifts in Sweden’s energy mix, with production targeted within ten years.
A critical market announcement for SE3 is the “Other market information” published at 16:13 CET, stating that “ATC for the border FI->SE3 will be zero for the mFRR market” from 2026-03-18 16:00 CET to 2026-03-23 23:59 CET. This significant reduction in available transfer capacity from Finland into SE3 for the mFRR market will likely exacerbate price volatility and increase the need for local balancing resources within SE3.
Ancillary Services#
FCR-N#
| Metric | EUR/MW |
|---|---|
| Average Price | 25.56 |
| Minimum Price | 19.52 |
| Maximum Price | 28.34 |
Commentary: The average FCR-N price on 2026-03-20 was 25.56 EUR/MW, with a range from 19.52 EUR/MW to 28.34 EUR/MW. This average is lower than yesterday’s 35.0 EUR/MW and also slightly above the 7-day average of 24.63 EUR/MW. The decrease in FCR-N prices despite high spot prices could indicate an increase in available FCR-N capacity offers, or perhaps a temporary reduction in the perceived need for frequency containment reserves due to stable grid operation, even as energy prices remain high due to fuel costs.
FCR-D#
| Metric | EUR/MW |
|---|---|
| Up-Regulation Average | 4.68 |
| Up-Regulation Minimum | 2.31 |
| Up-Regulation Maximum | 8.22 |
| Down-Regulation Average | 9.96 |
| Down-Regulation Minimum | 3.50 |
| Down-Regulation Maximum | 16.73 |
Commentary: FCR-D prices showed a clear distinction between up and down regulation. Up-regulation averaged 4.68 EUR/MW, while down-regulation averaged 9.96 EUR/MW. The FCR-D up-average of 4.68 EUR/MW is higher than the 7-day average of 4.40 EUR/MW, and the FCR-D down-average of 9.96 EUR/MW is also significantly higher than the 7-day average of 6.83 EUR/MW. This suggests a more active and potentially more profitable market for FCR-D, particularly for down-regulation, indicating a greater need to manage excess power or maintain grid stability.
mFRR CM#
| Metric | EUR/MW |
|---|---|
| Up-Regulation Average | 7.69 |
| Up-Regulation Minimum | 2.50 |
| Up-Regulation Maximum | 37.37 |
| Down-Regulation Average | 1.09 |
| Down-Regulation Minimum | 0.88 |
| Down-Regulation Maximum | 1.49 |
Commentary: The mFRR Capacity Market (CM) exhibited a significant spread between up and down regulation. Up-regulation averaged 7.69 EUR/MW, with a peak of 37.37 EUR/MW, indicating periods of high demand for upward flexibility. Down-regulation, however, remained consistently low, averaging 1.09 EUR/MW. This suggests that while there was some need for upward regulation, the overall market for mFRR down-regulation capacity was less constrained.
mFRR EAM#
| Metric | Value |
|---|---|
| Imbalance Average (EUR) | 68.75 |
| Imbalance Minimum (EUR) | -3.00 |
| Imbalance Maximum (EUR) | 308.52 |
| Activated Up-Regulation (MW) | 576.0 |
| Activated Down-Regulation (MW) | 3763.0 |
| Up Regulation Hours | 6 |
| Down Regulation Hours | 18 |
| Average Up Spread vs DA (EUR) | 16.21 |
| Average Down Spread vs DA (EUR) | -41.48 |
| Max Up Spread vs DA (EUR) | 55.73 |
| Max Down Spread vs DA (EUR) | -78.21 |
Commentary: The mFRR Energy Activation Market (EAM) on 2026-03-20 was heavily dominated by down-regulation, with 18 hours of down-regulation compared to 6 hours of up-regulation. A substantial 3763.0 MW of down-regulation was activated, significantly outweighing the 576.0 MW of up-regulation. The average imbalance price was 68.75 EUR, ranging from -3.0 EUR to 308.52 EUR. The average spread against Day-Ahead prices was -27.06 EUR, with a maximum down spread of -78.21 EUR. This strong bias towards down-regulation, particularly during the afternoon and evening (10:00 CET to 23:00 CET), indicates periods of surplus generation or lower-than-expected demand, leading to depressed imbalance prices relative to day-ahead. This apparent contradiction between high spot prices and dominant mFRR down-regulation suggests that while the overall energy market is expensive due to external factors, there are specific periods where unexpected oversupply or reduced demand requires the system to absorb power. This could be due to inaccurate day-ahead forecasts, sudden changes in renewable generation, or lower-than-expected consumption. The zero ATC for FI->SE3 in the mFRR market likely exacerbates this by limiting the export of surplus power from SE3.
Weather Conditions#
| City | Avg Temp (°C) | Avg Wind (m/s) | Avg Cloud (%) | Total Precip (mm) |
|---|---|---|---|---|
| Göteborg | 3.9 | 2.2 | 5.0 | 0.1 |
| Linköping | 4.8 | 2.1 | 2.0 | 0.0 |
| Stockholm | 5.6 | 2.3 | 2.0 | 0.0 |
Commentary: On 2026-03-20, SE3 experienced mild and relatively clear weather. Average temperatures across key cities ranged from 3.9°C in Göteborg to 5.6°C in Stockholm. Wind speeds were light, averaging around 2.1-2.3 m/s, and cloud cover was minimal. Precipitation was negligible. While mild temperatures (consistently in the 3.1-6.5°C range over the past week) typically lead to reduced heating demand and thus lower electricity prices, this effect is currently being overridden by the significant geopolitical factors driving up fuel costs. Furthermore, the notable decline in average wind speeds over the last seven days, from 7.4 m/s on March 13th to today’s 2.1-2.3 m/s, directly impacts renewable generation. Lower wind speeds mean reduced output from wind farms, increasing the need for conventional thermal power generation to meet demand. This reliance on more expensive generation, coupled with the high fuel prices stemming from the “Irankriget,” contributes significantly to the sustained high spot prices despite the otherwise demand-dampening mild weather.
Grid & Market Events#
- Planned Consumption Unavailability, NO3, Hydro Alu. Sunndal / SU 3 (2026-03-20 23:47 CET & 23:28 CET): Foreseen maintenance at an aluminium plant in Norway, indicating reduced industrial consumption.
- Unplanned Production Unavailability, FI, Forssa (2026-03-20 22:51 CET & 20:52 CET): Technical problems causing unplanned outages at a production unit in Finland.
- Unplanned Consumption Unavailability, FI, Tornio / TW (multiple instances from 2026-03-20 19:51 CET to 14:29 CET): Unplanned maintenance and production breaks at a consumption unit in Finland.
- Planned Production Unavailability, NL, EEMS 4 (2026-03-20 18:14 CET): Overhaul maintenance at a production unit in the Netherlands.
- Unplanned Production Unavailability, IE, Edenderry Power Plant (multiple instances from 2026-03-20 17:54 CET to 10:58 CET): Fuel issues causing unplanned outages at an Irish power plant.
- Planned Production Unavailability, IE, Poolbeg BESS (PB8) (2026-03-20 17:35 CET): Foreseen maintenance for an upgrade of Ring Main Unit (RMU) protection.
- Planned Production Unavailability, IE, Aghada 02B BESS (AD5) (2026-03-20 17:22 CET & 16:14 CET): Planned maintenance rendering a BESS unit unavailable in Ireland.
- Planned Transmission Unavailability, SE3 \u2192 SE4, NO1 \u2192 SE3, SE2 \u2192 SE3, SE3 \u2192 DK1 (2026-03-20 17:01 CET): Foreseen maintenance on multiple critical transmission lines impacting SE3’s interconnections.
- Other Market Information, FI->SE3 ATC zero for mFRR (2026-03-20 16:13 CET): ATC for the border FI->SE3 will be zero for the mFRR market from 2026-03-18 16:00 CET to 2026-03-23 23:59 CET.
- Planned Production Unavailability, SE3, Slite (2026-03-20 15:17 CET): Planned maintenance at a production unit in SE3.
- Planned Transmission Unavailability, SE2 \u2192 SE3 (2026-03-20 14:06 CET & 13:06 CET): Foreseen maintenance on transmission lines between SE2 and SE3.
- Planned Production Unavailability, SE3, Rya KVV (2026-03-20 09:11 CET): Planned maintenance for modification of burners at a production unit in SE3.
- Planned Transmission Unavailability, SE3 \u2192 SE3A, SE2 \u2192 SE3, FI \u2192 SE3, SE3 \u2192 SE4 (2026-03-20 08:49 CET): Foreseen maintenance on multiple critical transmission lines impacting SE3’s interconnections.
- Unplanned Production Unavailability, SE4, Heleneholmsverket (2026-03-20 11:41 CET): Power station unavailable due to investigation.
- Unplanned Consumption Unavailability, SE3, Holmen Hallsta / Paper Mill (2026-03-19 08:22 CET & 07:42 CET): Failure at a large industrial consumer in SE3.
Commentary: The grid experienced a high number of planned and unplanned unavailability events today. Of particular relevance to SE3 are the multiple planned transmission outages affecting its borders with SE2, SE4, FI, and NO1. These include specific planned maintenance on SE2->SE3 lines and a broader outage affecting SE3’s connections to SE2, FI, and SE4. Critically, the “Other market information” from Svenska kraftnät confirms zero Available Transfer Capacity (ATC) for the FI->SE3 border in the mFRR market until March 23rd. This severely restricts balancing power imports from Finland, potentially increasing the reliance on local resources within SE3 and contributing to higher mFRR EAM prices and volatility. The planned maintenance at SE3’s Slite and Rya KVV production units further tightens the local supply situation. Unplanned consumption outages at Holmen Hallsta / Paper Mill in SE3 could temporarily reduce local demand, but the overall impact of transmission constraints and production maintenance is expected to be more dominant in maintaining high prices and price spreads.
Implications for BESS in SE3#
The current market conditions in SE3 present significant opportunities for Battery Energy Storage System (BESS) operators. The day-ahead spot market’s high volatility, with a maximum price of 1879.56 SEK/MWh and a minimum of 361.88 SEK/MWh, offers substantial arbitrage potential. BESS units can profit by charging during low-price hours (e.g., 12:00-13:00 CET) and discharging during peak price periods (e.g., 07:00 CET and 18:00 CET).
In the ancillary services market, FCR-D down-regulation, with an average price of 9.96 EUR/MW, appears particularly attractive, especially given its higher average compared to FCR-D up-regulation and the 7-day historical trend. BESS units capable of providing FCR-D down could capitalize on this demand. The mFRR EAM’s strong bias towards down-regulation (18 hours of activation, average down spread of -41.48 EUR/MWh) suggests an oversupply of generation or reduced demand. BESS units can participate in down-regulation by absorbing excess power during these periods, effectively charging at negative or low imbalance prices. However, the zero ATC for FI->SE3 in the mFRR market implies that SE3 needs to rely more on internal balancing resources, potentially increasing the value of local BESS flexibility for both up and down regulation within the area. Operators should closely monitor the hourly imbalance price and day-ahead spread to optimize charging and discharging strategies in the mFRR EAM.
Outlook#
The outlook for the SE3 electricity market remains highly uncertain and likely volatile in the short to medium term. The ongoing “Irankriget” is the primary driver, keeping global fuel prices elevated and directly contributing to high electricity spot prices. While mild weather might temper demand, geopolitical factors are expected to continue dictating market sentiment. The persistent transmission constraints and planned maintenance outages, particularly those affecting SE3’s interconnections and the zero ATC for FI->SE3 in the mFRR market, will likely maintain significant price spreads and increase the need for local balancing resources. BESS operators should prepare for continued volatility and prioritize flexibility to capitalize on both spot market arbitrage and ancillary service opportunities, especially in the mFRR EAM, where local balancing is becoming increasingly critical.