Energy efficiency as a sustainability concern in Africa and financial development: How much bias is involved?
This study contributes to the literature on whether financial development stimulates technical energy efficiency (TEE) or not, by addressing core biases that creep into the relationship and thereby reducing the ability to draw causal inferences from financial development to TEE. Our approach is based on the instrumental stochastic frontier technique, where biases in the frontier and inefficiency equations are dealt with using external instrumental variables.