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This module calculates the costs of heat supply in buildings via decentral heating technologies. Inputs to the module are investment costs, O&M costs, energy prices, the hourly load profile of heat demand as well as depreciation time and interest rate. Furthermore, the composition of buildings and renovation states of the buildings in the analysed area are required. The outputs are heat supply costs of various decentral heat supply technologies for the defined buildings and price assumptions as well as reference decentral supply costs for the analysed area and related CO2 emissions.
This calculation module calculates the levelized cost of heat (LCOH) for various technologies to supply a user-defined building.
The technologies are for example as follows:
Based on the selected region the corresponding NUTS0 and NUTS2 Region is determined.
Then for the selected building type and building age and NUTS0 region the specific useful energy demand is selected and the annual heat demand calculated by multiplying it by the gross floor area.
Based on the annual heat demand of the building and the entered savings in space heating the heat load is calculated with the use the heat load profiles.
With the heat load, the annual heat demand and the selected year the investment costs and operational costs and fuel costs for each heating technology are determined.
The specific investment and operational costs are assumed to have an exponential behaviour:
Therefore based on the country, year and building type of the entered inputs the factors for each technology are figured out:
With the factors determined the absolute costs can be calculated as follows:
For the fuel costs, the price data of the energy carriers are needed.
Now we have all the needed data and can calculate the levelized cost of heat.
The levelized cost of heat for each heating system is calculated as the net present value of the cash flow and the heat generation over the lifetime.
The levelized cost of heat is given by:
In this calculation the yearly costs and the yearly heat production (useful energy demand) is assumed to be constant over the lifetime and thus the summations transform into a geometric series and the transforming factor is called the annuity factor α. A graphical representation of this transforming process is shown in the figures below
This assumption simplifies the calculation and the LCOH is given by the following formula:
Here you get the bleeding-edge development for this calculation module.
Hotmaps-Wiki, https://github.com/HotMaps/hotmaps_wiki/wiki/CM-Decentral-heating-costs (November 2019)
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Institute of Energy Systems and Electrical Drives
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Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons CC BY 4.0 International License.
We would like to convey our deepest appreciation to the Horizon 2020 Hotmaps Project (Grant Agreement number 723677), which provided the funding to carry out the present investigation.
Last edited by JetonH, 2020-09-03 11:06:33