The graph shows the total electricity consumption of Alsion since 2015.
The total consumption of electricity at Alsion dropped significantly from 2015 to 2016 and after that remained roughly constant with a minor increasing tendency. The latter is due to the installation of additional research and development equipment, e.g. new R2R printing machinery. (see also the graph about the electricity consumption of SDU).
Within the last ten years, attempts have been made to safe energy at Alsion, especially in the cleanroom facility and the concert hall, which together in 2015 have used more than 1/3 of the total electricity consumption.
Electricity consumption of the cleanroom has been reduced by a factor of two during the past ten years. Several measures made this improvement possible:
- turning the lights off whenever they are not needed
- reducing ventilation strength
- reducing fan filtering action
- reducing active humidification to a minimum at non-working hours
- installing more efficient exhaust pumps
Besides, extremely energy-consuming equipment has been exchanged with more efficient equipment. We performed all changes taking into account that the necessary cleanliness and safety levels of the cleanroom are still maintained.
To further optimize the overall energy balance, we got a 60kWp solar panel array installed and connected to the cleanroom.
Another area that stands for a significant reduction in energy consumption is the concert hall.
The reduction in electricity consumption after 2015 is mainly due to a modification of the lighting and ventilation system.
What can solar cells contribute?
We placed solar cells of 60kWp on the roof of one block of Alsion. They deliver on average 51 MWh each year. The electricity production is roughly 20% of the energy consumption of the cleanroom in 2018.
The cleanroom used approximately 16 % of the total electricity consumption of Alsion in 2018. So, solar cells solely are not a solution. However, a consistent increase of efficiency and more mindful user behaviour could help, as demonstrated by the factor 2 decrease of overall energy consumption of the cleanroom from 2010 to 2018.
The increase in water consumption from 2017 to 2018 is a result of the construction of the CIE building where all water supply came from Alsion. Additionally, EASV started to significantly increase the number of students to the expected value for a fully operational educational institution.
The water consumption in the cleanroom could be significantly reduced by actively reducing the humidification to a minimum at non-working hours.