01 Guided scenario · about 3 minutes

Anticipate a solar storm, from alert to action

Follow one solar storm from its source to your assets. Choose your sector; the other stays one click away.

Which assets do you protect?

Satellite operatorLow and geostationary orbits

Power grid operatorHigh-voltage transmission

02 Early alert

An early alert, before the eruption

Above an active region of the Sun, a twisted magnetic structure stores energy for days. SKEION’s physics starts here. Our vision: spot the moment it becomes unstable and send an early alert for your sector, before the eruption.

The Sun in extreme ultraviolet: above an active region, a twisted magnetic structure has risen slowly under its arcade and nears its instability, before any eruption.

Early alertStatus: Vision

Power grid and satellite operators: instability building, an eruption is possible.

Uncertaintyhigh

Active region enlarged, sequence accelerated, false-colour extreme ultraviolet.

03 Alert confirmed

Eruption detected, alert confirmed

Once the eruption is observed, the early alert is confirmed: the risk index rises, the uncertainty band narrows and the exposed area shrinks.

Map · the exposed area
Curve · the risk index and its uncertainty band
Axis · the time before the storm arrives

Risk index, 0 to 100: probability that the eruption reaches Earth × expected severity for your thresholds.

Power grid operator, once the eruption is observed: the alert is confirmed; the risk index is 67, its band from 51 to 83 now above the action threshold, and the exposed area has narrowed to the night side, north of 48 degrees magnetic.

Power grid operator · illustrative values.

Satellite operator, once the eruption is observed: the alert is confirmed; the risk index is 67, its band from 51 to 83 now above the action threshold, and the exposed arc of the geostationary orbit has narrowed around noon.

Satellite operator · illustrative values.

04 Refining

The alert sharpens

Our ambition: narrow the uncertainty hour after hour, shorten the arrival window and focus the exposed area on your grid. Current benchmark: the arrival time of a coronal mass ejection is off by about 13 hours on average.

Our ambition: narrow the uncertainty hour after hour, shorten the arrival window and focus the exposed area on your satellites. Current benchmark: the arrival time of a coronal mass ejection is off by about 13 hours on average.

Public benchmarks: mean absolute error ≈ 13 h on a CME’s arrival time (Riley et al., 2018); shock seen at L1, 1.5 million km away, 15 to 60 min ahead (NOAA SWPC).

Power grid operator, 12 hours before arrival: the exposed area has narrowed to the night side north of 48 degrees magnetic; the risk index is 70, its band from 57 to 82 now above the action threshold; the alert is confirmed.

Power grid operator, 12 hours before arrival · illustrative values.

Satellite operator, 12 hours before arrival: the exposed arc of the geostationary orbit has narrowed around noon; the risk index is 70, its band from 57 to 82 now above the action threshold; the alert is confirmed.

Satellite operator, 12 hours before arrival · illustrative values.

05 Your actions

Your actions

Each alert level opens one action, from the slowest to prepare to the fastest. Do you act on the alert?

Postpone maintenance, return lines to serviceAlert likely · T − 38 h
Raise reactive power reservesAlert confirmed · T − 24 h
Reduce load on exposed transformersShock detected at L1 · T − 23 min

Postpone the planned launchAlert likely · T − 38 h
Step up orbit tracking, widen collision marginsAlert confirmed · T − 24 h
Orient satellites to minimise dragShock detected at L1 · T − 23 min

Your choice

Actions inspired by published procedures and reports (NERC; Royal Academy of Engineering), to be adapted through studies.

Actions documented in public reports (NOAA, 2026; NASA; ESA).

Power grid operator, just before arrival: three numbered action marks sit on the time axis, at the alert likely, the alert confirmed and the shock detected at L1.

Power grid operator · each action at the alert level that opens it.

Satellite operator, just before arrival: three numbered action marks sit on the time axis, at the alert likely, the alert confirmed and the shock detected at L1.

Satellite operator · each action at the alert level that opens it.

06 Arrival

The storm arrives

The same storm in both cases (same geoelectric field). Without action the margins run out; with action they stay in the safe zone.

The same storm in both cases: a denser upper atmosphere, orbits harder to track. Without action three indicators pass their threshold; with action they stay in the safe zone.

Consequences compared (illustrative)
Indicator	Without actionYour choice	With actionYour choice
Same storm	1.6 V/km geoelectric field at the ground (max over 10 min)
N−1 securityif a line trips	2 lines outNot held	All in serviceHeld
Reactive reserve usedlimit: 90%	95%Over the limit	70%Safe zone
Transformer loadmost exposed, limit: 100%	104%Over the limit	84%Safe zone

Consequences compared (illustrative)
Indicator	Without actionYour choice	With actionYour choice
Same storm	+65% drag at 210 km, compared with quiet conditions
Newly launched satellitesat 210 km, altitude lost per day	18 km/dayOver the limit	Launch postponedSafe zone
Position uncertaintyagainst the collision margin	128%Over the limit	77%Safe zone
Altitude loss in serviceagainst the manoeuvre budget	104%Over the limit	62%Safe zone

Consequences computed from the values of the scene.

Eastern Canada at night under the storm: the auroral electrojet above a generic high-voltage grid and currents at the transformer neutrals; the most loaded substation is marked by an illustrative alert symbol.

Generic (invented) grid, heights ×2.5, time compressed.

Low Earth orbit under the storm: the heated upper atmosphere rises, density goes up and newly launched satellites at 210 km spiral down.

Altitudes ×10, time compressed.

07 Outcome

Acting early reduces the risk

An earlier alert, with its uncertainty, leaves time to act. Our ambition: warn earlier, then narrow the area and the arrival window, from the Sun’s magnetic configuration to your assets.

With action: 3 of 3 indicators in the safe zone. Without action: 3 of 3 past their threshold.

Built on the physics of the Sun: thirty years of research, two Nature covers.

In a pilot project, we explore with you how our solutions can meet your specific needs and solve your problems. From your case, we adapt and improve them so they fit the way your teams work.

Discuss a pilot project

Status: Vision Sector alerts with their uncertainty: our vision, under construction.

See the satellite operator’s scenario See the power grid operator’s scenario

Early alertStatus: Vision

Power grid operatorsSatellite operators: instability building, an eruption is possible.

Uncertaintyhigh

SourceMagnetic configuration, eruption

SpacePropagation, magnetosphere, satellites

InfrastructureInduced currents, power grids

Low orbitDrag, orbit tracking

Without actionYour choice3 of 3 past their threshold

With actionYour choice3 of 3 in the safe zone

How does an eruption reach Earth? Follow the journey from the Sun to power grids