| Average annual total cost | Average annual variable cost | Average renewable production | ||

Spearman’s rho | Average annual total cost | Correlation Coefficient | 1.000 | 0.938** | −0.950** |

Sig. (2-tailed) | . | 0.000 | 0.000 | ||

N | 32 | 32 | 32 | ||

Average annual variable cost | Correlation Coefficient | 0.938** | 1.000 | −0.900** | |

Sig. (2-tailed) | 0.000 | . | 0.000 | ||

N | 32 | 32 | 32 | ||

Average renewable production | Correlation Coefficient | −0.950** | −0.900** | 1.000 | |

Sig. (2-tailed) | 0.000 | 0.000 | . | ||

N | 32 | 32 | 32 |