This book studies wholesale and sector-wise electricity demand in South Korea. Electricity demand analysis provides useful insights for market performance evaluation, load prediction, market restructuring, tariff schedule design, etc. In recent years, there has been a heated debate in Korea on how to restructure the electricity market, since low reserve margins that have been in operation (6.7% on average in 2010 for instance) have been threatening the stability and integrity of the electricity system. This book thus attempts to address three important questions about Korean electricity demand-side market restructuring: (1) What are the estimates of the price elasticity of electricity demand in the wholesale and retail markets, including the residential, industrial, and commercial sectors? (2) How do inter-temporal price changes affect electricity consumption, and what are the estimates of the inter-temporal electricity cross-price elasticities in the wholesale market? (3) Exceptfor the electricity price, what other factors affect electricity consumption in the wholesale and retail markets, including the residential, industrial, and commercial sectors?