The Dark Energy Spectroscopic Instrument (DESI)
  We present the status of the Dark Energy Spectroscopic Instrument (DESI) and
its plans and opportunities for the coming decade. DESI construction and its
initial five years of operations are an approved experiment of the US
Department of Energy and is summarized here as context for the Astro2020 panel.
Beyond 2025, DESI will require new funding to continue operations. We expect
that DESI will remain one of the world's best facilities for wide-field
spectroscopy throughout the decade. More about the DESI instrument and survey
can be found at https://www.desi.lbl.gov.
