Question 1

What is imbalance?

Accepted Answer

Imbalance — or Ausgleichsenergie in German, odchylka in Czech — is the deviation between a balance responsible party's scheduled position and their actual consumption or generation. When actual and scheduled volumes differ, the grid operator settles the difference at the imbalance price (reBAP in Germany), which is typically less favourable than the Day-Ahead price.

Question 2

What is short-term power market trading?

Accepted Answer

Short-term power market trading covers all electricity transactions from day-ahead auctions through to real-time balancing. It is where imbalance risk is managed in practice — and where accurate forecasting has the highest financial impact.

Question 3

What is day-ahead market analysis?

Accepted Answer

The day-ahead market is a power exchange auction where electricity for each 15-minute or hourly interval of the following day is bought and sold. Day-ahead market analysis involves forecasting price levels, identifying spread opportunities, and optimising scheduled positions before gate closure.

Question 4

What is intraday power trading?

Accepted Answer

Intraday trading takes place continuously after day-ahead gate closure and up to close to real-time delivery. It is the primary tool for reducing imbalance risk: if your day-ahead position diverges from expected actual output, intraday purchases or sales can close the gap before settlement.

Question 5

What is imbalance risk?

Accepted Answer

Imbalance risk is the financial exposure arising when a market participant's actual generation or consumption deviates from their scheduled position. The deviation is settled at the imbalance price — reBAP in Germany — which is typically less favourable than day-ahead prices.

Question 6

What is a balance responsible party (BRP)?

Accepted Answer

A balance responsible party (BRP) — Bilanzkreisverantwortlicher in German — is a market participant legally responsible for maintaining the balance between scheduled and actual electricity flows within their portfolio. The BRP is financially liable for any imbalance between their notified schedule and actual metered volumes.

Question 7

What is reBAP?

Accepted Answer

reBAP is Germany's uniform imbalance settlement price, calculated across all four German transmission system operator zones. It reflects the cost of the balancing energy activated to correct system imbalances and is the key reference price for imbalance cost optimisation in Germany.

Question 8

What is EPEX Spot?

Accepted Answer

EPEX Spot is the pan-European power exchange operating day-ahead and intraday markets for Germany, France, Austria, Belgium, the Netherlands, Luxembourg, Switzerland and other countries. Understanding EPEX Spot price formation is foundational to short-term power market analysis.

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