Gas price comparisons are easily distorted when sources use different units or consumption profiles.
Check the unit
€/kWh, €/MWh and prices per gigajoule need to be converted consistently.
Check the band
EnergyBoard uses household band D2.
Check taxation
A tax-free price and a final household price answer different questions.
Match the period
Half-yearly data should be compared for the same semester.
Respect missing observations
No observation does not mean a zero price. See the EnergyBoard gas ranking.