TY - JOUR
T1 - Support schemes adapting district energy combined heat and power for the role as a flexibility provider in renewable energy systems
AU - Andersen, Anders N.
AU - Østergaard, Poul Alberg
PY - 2020
Y1 - 2020
N2 - Combined heat and power units connected to district energy plants have an important role displacing condensing mode power generation and boiler-based heat-only generation. However, often the earnings on the electricity markets are not sufficient to promote the establishment of these; therefore, support schemes are needed. When designing a support scheme to promote combined heat and Power, it is important to consider that in the transition to a renewable energy system, the role changes radically from displacing traditional generation to assisting in the integration of fluctuating renewables and finally providing the electrical capacity needed during hours with insufficient wind and sun. An energyPRO-based comparison of a premium and a triple tariff support scheme is presented. The comparison shows that, during a 20-year period, the cost to society is less than half when using the triple tariff compared to using the premium scheme for providing a certain capacity. While this capacity displaces the same amount of production from condensing mode power plants, the triple tariff promotes larger thermal energy storage capacity compared to the premium scheme, which is beneficial for district energy combined heat and power to fulfil its subsequent tasks in a renewable energy system.
AB - Combined heat and power units connected to district energy plants have an important role displacing condensing mode power generation and boiler-based heat-only generation. However, often the earnings on the electricity markets are not sufficient to promote the establishment of these; therefore, support schemes are needed. When designing a support scheme to promote combined heat and Power, it is important to consider that in the transition to a renewable energy system, the role changes radically from displacing traditional generation to assisting in the integration of fluctuating renewables and finally providing the electrical capacity needed during hours with insufficient wind and sun. An energyPRO-based comparison of a premium and a triple tariff support scheme is presented. The comparison shows that, during a 20-year period, the cost to society is less than half when using the triple tariff compared to using the premium scheme for providing a certain capacity. While this capacity displaces the same amount of production from condensing mode power plants, the triple tariff promotes larger thermal energy storage capacity compared to the premium scheme, which is beneficial for district energy combined heat and power to fulfil its subsequent tasks in a renewable energy system.
KW - Combined heat and power
KW - Energy transition
KW - Premium support scheme
KW - Renewable energy systems
KW - Thermal energy storage
KW - Triple tariff
UR - http://www.scopus.com/inward/record.url?scp=85076036836&partnerID=8YFLogxK
U2 - 10.1016/j.energy.2019.116639
DO - 10.1016/j.energy.2019.116639
M3 - Journal article
SN - 0360-5442
VL - 192
SP - 1
EP - 12
JO - Energy
JF - Energy
M1 - 116639
ER -