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Solar Orbiter strives to unveil how the Sun controls and shapes theheliosphere and fills it with energetic particle radiation. To this end, itsEnergetic Particle Detector (EPD) has now been in operation, providingexcellent data, for just over a year. EPD measures suprathermal and energeticparticles in the energy range from a few keV up to (near-) relativisticenergies (few MeV for electrons and about 500 MeV/nuc for ions). We present anoverview of the initial results from the first year of operations and weprovide a first assessment of issues and limitations. During this first year ofoperations of the Solar Orbiter mission, EPD has recorded several particleevents at distances between 0.5 and 1 au from the Sun. We present dynamic andtime-averaged energy spectra for ions that were measured with a combination ofall four EPD sensors, namely: the SupraThermal Electron and Proton sensor(STEP), the Electron Proton Telescope (EPT), the Suprathermal Ion Spectrograph(SIS), and the High-Energy Telescope (HET) as well as the associated energyspectra for electrons measured with STEP and EPT. We illustrate thecapabilities of the EPD suite using the 10-11 December 2020 solar particleevent. This event showed an enrichment of heavy ions as well as $^3$He, forwhich we also present dynamic spectra measured with SIS. The high anisotropy ofelectrons at the onset of the event and its temporal evolution is also shownusing data from these sensors. We discuss the ongoing in-flight calibration anda few open instrumental issues using data from the 21 July and the 10-11December 2020 events and give guidelines and examples for the usage of the EPDdata. We explain how spacecraft operations may affect EPD data and we present alist of such time periods in the appendix. A list of the most significantparticle enhancements as observed by EPT during this first year is alsoprovided.

First year of energetic particle measurements in the inner heliosphere with Solar Orbiter's Energetic Particle Detector