Electric night storage heater was introduced and disseminated for power grid balancing and efficient management of power generation facility. But fuel cost for heating has been increased rapidly while the cost of electricity increased slightly. This abnormal rate system caused peak load in winter at last. To solve this problem, application of an air source heat pump was suggested. In the study, the effect of replacing night heater by heat pump and the economics were analysed. In addition the expectation of prospect of heat pump penetration was simulated based on surveyed and investigated data. As a result, fund supporting as well as institutional backing was needed for effective propagation and return of investment.

Abstract
 1. 서론
 2. 심야 히트펌프 적용
  2.1 심야전기 보일러의 구성요소 및 기술규격
  2.2 심야 히트펌프의 구성요소 및 기술규격
 3. 경제성 분석
  3.1 국가적 차원에서의 에너지절감 및 CO2 저감
  3.2 전력회사 입장에서의 적자보전액 감소
  3.3 수용가(고객) 입장에서의 경제성 검토
  3.4 심야전기 히트펌프의 시장성 분석
 4. 결과 및 고찰
 참고문헌

• 정훈(한전 전력연구원 녹색성장연구소) | H. JUNG
• 조종영(한전 전력연구원 녹색성장연구소) | J. Y. JO
• 이철희(한전 전력연구원 녹색성장연구소) | C. H. Lee