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Leases (Schedule of Right-of-use Assets) (Details) € in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2022 EUR (€) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 EUR (€) | Dec. 31, 2020 EUR (€)
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |  |
Balance at January 1 | € 23,367 |  |  |  |
Depreciation for the year | (743) | [1] |  | € (774) | € (320)
Balance at December 31 | 30,020 |  | $ 32,016 | 23,367 |
Cost [member] |  |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |  |
Balance at January 1 | 23,367 |  |  | 17,209 |
lease agreements entered into during the period | 8,861 |  |  | 10,629 |
Depreciation for the year | (1,366) |  |  | (1,031) |
Other | (57) |  |  | (4,496) |
Effect of changes in exchange rates | (785) |  |  | 1,056 |
Balance at December 31 | 30,020 |  |  | 23,367 | 17,209
Cost [member] | Gelderland [Member] |  |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |  |
Balance at January 1 | 170 |  |  | 355 |
lease agreements entered into during the period | 0 |  |  | 0 |
Depreciation for the year | (124) |  |  | (185) |
Other | 0 |  |  | 0 |
Effect of changes in exchange rates | 0 |  |  | 0 |
Balance at December 31 | 46 |  |  | 170 | 355
Cost [member] | Italy [Member] |  |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |  |
Balance at January 1 | 0 |  |  |  |
lease agreements entered into during the period | 8,861 |  |  |  |
Depreciation for the year | (128) |  |  |  |
Other | 0 |  |  |  |
Effect of changes in exchange rates | 0 |  |  |  |
Balance at December 31 | 8,733 |  |  | 0 |
Cost [member] | Spain [Member] |  |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |  |
Balance at January 1 | 2,755 |  |  | 2,874 |
lease agreements entered into during the period | 0 |  |  | 0 |
Depreciation for the year | (120) |  |  | (119) |
Other | (321) |  |  | 0 |
Effect of changes in exchange rates | 0 |  |  | 0 |
Balance at December 31 | 2,314 |  |  | 2,755 | 2,874
Cost [member] | Talasol [Member] |  |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |  |
Balance at January 1 | 7,587 |  |  | 12,517 |
lease agreements entered into during the period | 0 |  |  | 0 |
Depreciation for the year | (404) |  |  | (404) |
Other | 0 |  |  | 4,526 |
Effect of changes in exchange rates | 0 |  |  | 0 |
Balance at December 31 | 7,183 |  |  | 7,587 | 12,517
Cost [member] | Talmei Yosef [Member] |  |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |  |
Balance at January 1 | 1,503 |  |  | 1,463 |
lease agreements entered into during the period | 0 |  |  | 0 |
Depreciation for the year | (117) |  |  | (110) |
Other | 36 |  |  | (18) |
Effect of changes in exchange rates | (91) |  |  | 168 |
Balance at December 31 | 1,331 |  |  | 1,503 | 1,463
Cost [member] | Pumped Storage [Member] |  |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |  |
Balance at January 1 | 11,352 |  |  | 0 |
lease agreements entered into during the period | 0 |  |  | 10,629 |
Depreciation for the year | (473) |  |  | (213) |
Other | 228 |  |  | (48) |
Effect of changes in exchange rates | (694) |  |  | 888 |
Balance at December 31 | € 10,413 |  |  | € 11,352 | € 0
[1] | The rest of the depreciation is capitalized to fixed asset.

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- Definition The amount of assets that represent a lessee's right to use an underlying asset for the lease term. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2022-03-24 -Paragraph 53 -Subparagraph j -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2022-en-r&anchor=para_53_j&doctype=Standard -URIDate 2022-03-24 + Details
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