The Long Trade: Volatility Returns to a Market That Forgot It

The story begins where most of them do: with a number nobody could explain. For six weeks the figures arrived on schedule, neatly formatted, entirely wrong.

What the records show

Internal documents reviewed for this article describe a process that grew faster than the safeguards built around it. Staff raised concerns early. The concerns were logged, then filed.

"We were told the model was conservative. It was not conservative. It was quiet."

Three separate reviews reached similar conclusions, and each recommended slowing down. None of the recommendations were adopted in full.

The people affected

• Households billed for capacity they never used
• Contractors paid on estimates rather than meters
• Auditors handed summaries instead of source data

Where this goes next

Regulators have opened a preliminary inquiry. Their report is expected before the end of the quarter, and the questions it asks will matter far beyond one balance sheet.

For now, the numbers are being recalculated by hand - a reminder that the most advanced systems still fail in the oldest ways.