  The reactor antineutrino energy spectra and flux were reevaluated during the
preparation of the recent experiments devoted to the measurement of
$\theta_{13}$. Consequently some discrepancies between data and the theoretical
predictions in reactor antineutrino experiments at short distances were
observed when using the new predicted flux and spectra. This problem has been
called the Reactor Antineutrino Anomaly (RAA), which together with the gallium
anomaly, both show discrepancies with respect to the expectations at the $\sim$
3 $\sigma$ level. Oscillations into a light sterile neutrino state ($\Delta
m^{2} \sim 1eV^{2}$) could account for such deficits. The SoLid experiment has
been conceived to give an unambiguous response to the hypothesis of a light
sterile neutrino as the origin of the RAA. To this end, SoLid is searching for
an oscillation pattern at short baselines (6-9 m) in the energy spectrum of the
$\overline{\nu}_{e}$'s emitted by the
SCK\raisebox{-0.9ex}{\scalebox{2.8}{$\cdot$}}CEN BR2 reactor in Belgium. The
detector uses a novel technology, combining PVT (cubes of 5$\times$5$\times$5
cm$^3$) and $^6$LiF:ZnS (sheets $\sim$ 250 $\mu$m thickness) scintillators. It
is highly segmented (modules of 10 planes of 16$\times$16 cubes), and it's read
out by a network of wavelength shifting fibers and SiPMs. The fine segmentation
and the hybrid technology of the detector allows the clear identification of
the neutrino signals, reducing significantly backgrounds. Thus, a high
experimental sensitivity can be achieved. A 288 kg prototype was deployed in
2015, showing the feasibility of the detection principle. A full scale detector
(1.6 tons) is currently under construction, the data taking with the first
detector modules is expected by the end of 2017.
