  The simplest cosmological model ($\Lambda$CDM) is well-known to suffer from
the Hubble tension, namely an almost $5 \sigma$ discrepancy between the
(model-based) early-time determination of the Hubble constant $H_0$ and its
late-time (and model-independent) determination. To circumvent this, we
introduce an additional energy source that varies with the redshift as $(1 +
z)^n$, where $0 < n < 3$, and test it against the Pantheon Compilation of Type
Ia Supernovae as well as the CMBR observations (at $z \approx 1100$). The
deduced $H_0$ is now well-consistent with the value obtained from local
observations of Cepheid variables. Suggesting a non-zero value for the
curvature density parameter, positive (negative) for $n > 2$ ($n < 2$), the
resolution is also consistent with the BAO data.
