Total cost values
$$ q^T * A^{-1}[:,j] * tf[j] $$
Rest: /total-costs-of/{tech-flow}
Rest: /total-cost-values
$$ q^T * A^{-1} * diagm(tf) $$
$$ q^T * A^{-1}[:,j] * tf[j] $$
Rest: /total-costs-of/{tech-flow}
Rest: /total-cost-values
$$ q^T * A^{-1} * diagm(tf) $$