8
Example economic efficiency
View of a large office complex
BuildingLink is to be used in an exemplary office
complex. The economics for deployment in this
example are calculated and projected over an
eight-year period.
The office complex has a total area of 27,000 m2.
The heating costs per year amount to approxima-
tely 374,447 euros. To determine this, the primary
energy demand of the building class⁽²⁾ was ap-
proximated and average prices from the German
Federal Statistical Office were used.⁽³⁾
There are a total of 1,400 radiators in use. A total
investment of around 259,487 euros is expected
for the retrofitting of the building.
Based on these factors, three scenarios with dif-
ferent energy savings potentials
(1)
were considered
- a best, middle, and worst case.
Depending on user behavior and building insu-
lation, energy savings potentials of 31.5 percent
are possible in the best case. Over an eight-year
period, this corresponds to cost savings of 943,606
euros and a reduction in CO2 emissions of 1,360
tons
(4)
. The amortization here takes place in about
20 months.
SOURCES AND BASICS
(1)
Energy savings potential (heat sector) for tenants through the use of smart radiator thermostats: Case Study, Institute for Technology and Management in Building Opera-
tions (TMB), Karlsruhe Institute of Technology (KIT).
(2)
Source: Study Wohnen und Sanieren, Umweltbundesamt, S.13. https://www.umweltbundesamt.de/sites/default/files/medien/1410/publikationen/2019-06-03-barrierefrei-
-broschuere_wohnenundsanieren.pdf
(3)
Federal Statistical Office (Destatis), 2023 | Status: 05.07.2023 / 14:28:21
(4)
Source: Act to Standardize Energy Conservation Law for Buildings and to amend other laws, page 1789, For district heating, the average emission factor of all fuels was used,
Status: 13.08.2020
