Slope (a)

b

R²

Coal

1.3

−2622.8

0.9993

Oil

0.74

−1488

0.8207

Gas

1.76

−3554.8

0.9047

Hydro

5.8

−11729

0.975

Bio-energy

0.4

806

1

Solar PV

0.54

−1091.6

0.8556

Other Renewables

2.56

−5168.2

0.9399

Net Imports

−0.8

1615

0.9756