SEAI/CSO API source: https://ws.cso.ie/public/api.restful/PxStat.Data.Cube_API.ReadDataset/SEI01/JSON-stat/2.0/en
Dataset dimensions used:
Flow code 006 label: Primary energy supply including non energy
Years requested: 1990, 1991, 1992, 1993, 1994, 1995
Fuel codes and labels:
0101: Bituminous coal
0104: Lignite
0305: Jet kerosene
0304: Kerosene
0201: Milled peat
0202: Sod peat
0503: Biomass
0505: Biogas

Primary energy supply values from API (ktoe) for flow 006:
Year,0101 Bituminous coal,0104 Lignite,0305 Jet kerosene,0304 Kerosene,0201 Milled peat,0202 Sod peat,0503 Biomass,0505 Biogas
1990,2067,18,355,121,764,617,105,2
1991,1918,33,377,125,789,472,101,3
1992,1721,26,320,132,804,512,89,3
1993,1719,21,454,146,744,466,90,4
1994,1648,20,386,164,751,472,91,2
1995,1708,21,355,221,715,491,89,3

SEAI conversion factor snippet (from search result): toe -> MWh multiply by 11.63; therefore 1 ktoe = 11.63 GWh.
GWh = ktoe * 11.63; rounded chart figure = round(GWh to nearest whole number).

Calculated pair totals (ktoe), converted GWh, rounded GWh:
Year,Pair,ktoe_total,GWh,rounded_GWh
1990,Bituminous Coal + Lignite,2085,24248.55,24249
1990,Jet Kerosene + Kerosene,476,5535.88,5536
1990,Milled Peat + Sod Peat,1381,16061.03,16061
1990,Biomass + Biogas,107,1244.41,1244
1991,Bituminous Coal + Lignite,1951,22690.13,22690
1991,Jet Kerosene + Kerosene,502,5838.26,5838
1991,Milled Peat + Sod Peat,1261,14665.43,14665
1991,Biomass + Biogas,104,1209.52,1210
1992,Bituminous Coal + Lignite,1747,20317.61,20318
1992,Jet Kerosene + Kerosene,452,5256.76,5257
1992,Milled Peat + Sod Peat,1316,15305.08,15305
1992,Biomass + Biogas,92,1069.96,1070
1993,Bituminous Coal + Lignite,1740,20236.20,20236
1993,Jet Kerosene + Kerosene,600,6978.00,6978
1993,Milled Peat + Sod Peat,1210,14072.30,14072
1993,Biomass + Biogas,94,1093.22,1093
1994,Bituminous Coal + Lignite,1668,19398.84,19399
1994,Jet Kerosene + Kerosene,550,6396.50,6396
1994,Milled Peat + Sod Peat,1223,14223.49,14223
1994,Biomass + Biogas,93,1081.59,1082
1995,Bituminous Coal + Lignite,1729,20108.27,20108
1995,Jet Kerosene + Kerosene,576,6698.88,6699
1995,Milled Peat + Sod Peat,1206,14025.78,14026
1995,Biomass + Biogas,92,1069.96,1070