  The solar wind, a continuous flow of plasma from the sun, not only shapes the
near Earth space environment but also serves as a natural laboratory to study
plasma turbulence in conditions that are not achievable in the lab. Starting
with the Mariners, for more than five decades, multiple space missions have
enabled in-depth studies of solar wind turbulence. Parker Solar Probe (PSP) was
launched to explore the origins and evolution of the solar wind. With its
state-of-the-art instrumentation and unprecedented close approaches to the sun,
PSP is starting a new era of inner heliospheric exploration. In this review we
discuss observations of turbulent energy flow across scales in the inner
heliosphere as observed by PSP. After providing a quick theoretical overview
and a quick recap of turbulence before PSP, we discuss in detail the
observations of energy at various scales on its journey from the largest scales
to the internal degrees of freedom of the plasma. We conclude with some open
ended questions, many of which we hope that PSP will help answer.
