The crossings are among the busiest in the region. The operator says battery range is sufficient for the short distances with charging at each quay.
A regional ferry operator has switched three short crossings to fully electric vessels.
Passengers will notice quieter, vibration-free journeys, the operator said.
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The decision was widely expected. The bank said inflation across the euro area is now close to its two-percent target and signalled no change before the autumn.
The disclosure is unusually specific for the industry. Independent analysts say the per-task numbers are useful but hard to compare across vendors.
Researchers combining satellite and buoy records report the circulation has weakened by about four percent since the 1980s. They caution that the trend is small relative to natural year-to-year swings.
More than 14,000 runners completed the course on Sunday. Organisers said the mild conditions helped a large share finish under four hours.