O ystyried y niferoedd yr effeithiwyd arnynt a hyd cyfartalog yr oedi, ac o ymgorffori’r amcangyfrifon bras ynghylch gwerth posibl yr allbwn a gollwyd, mae’n debyg bod y methiant pŵer hwn wedi costio oddeutu £1 miliwn i’r economi.
Taking account of the numbers affected, likely average lengths of delays, and incorporating broad estimates of the potential value of lost output, it would suggest that the economic cost of the disruption was probably of the order of £1 million.