The company has to date also sold 100% of output in the current year from the reactors at its Preussen Elektra unit, it showed in presentation slides as it reported 2002 financial results.

Hedge rates of forward production volumes are tracked by wholesale power market traders and analysts to assess volumes tied up with counterparties and the value of future production.

As for achieved prices, E.ON's 2021 and 2022 nuclear delivery was sold at 44 euros ($52.08) per megawatt hour (MWh) and at 45 euros/MWh respectively, the slides showed. Production in 2020 had fetched 45 euros/MWh.

By comparison, wholesale over-the-counter prices for German round-the-clock power from all conventional energy sources to be delivered in 2022 stands at 56.4 euros/MWh, according to Refinitiv Eikon data, which showed day-ahead power at 59.3 euros[EL/DE].

E.ON retained its Brokdorf, Grohnde and Isar 2 reactors after an asset swap deal in which it transferred minority interests held by Preussen Elektra in the RWE-operated Emsland and Gundremmingen C plants.[POWER/DE]

Under Germany's nuclear exit plan, Grohnde, Brokdorf and Gundremmingen C will close at the end of 2021.

Isar 2 and Emsland will close at the end of 2022.

Sector peer Uniper recently also reported some hydropower hedging results as part of its earnings.

($1 = 0.8448 euros)

(Reporting by Vera Eckert; Editing by Edmund Blair)