| 2 September 1960 | | Build/construction | £125,000 contract for foundations, roof, tail-race, transformer compound and other works for the Inverawe Power Station [223001] to the Mitchell Construction Co Ltd of Peterborough and London; Mitchell was also awarded an April contract for the construction of a barrage, intake, small power station and other works per Builder p450 |
| 26 May 1961 | | Build/construction | contract for superstructure of power station awarded to the Mitchell Construction Co of Peterborough, bringing the total value of contracts awarded to the firm up to £3m per Builder p1023 |
| 2 June 1961 | | Build/construction | William Bain & Co Ltd of Coatbridge and London awarded £17,000 contract for supply and erection of steelwork for the power-house per Builder p1072 |