Figure 3: The optimized operation in seven days in May, where all the total investment of 8.9 MEUR is used on PV.
Yearly benefit of an investment of 8.9 mil. EUR in Ringkøbing Yearly benefit
Sold electricity
Bought electricity
[MEUR]
[MWh] 12,963
[MWh] 31,241 28,767 33,570 27,512 25,708
No new investment
Only solar collector and storage
0.96 0.97 0.93 1.09
8,595 7,305
Only heat pump and storage
Only photo voltaic Only wind turbine
19,433 20,347
Table 1: Yearly benefits and effects on sold and bought electricity of four alternative investments in heat and power production technologies.
Further analysis needed The analyses presented here show a slight preference for spending the investment sum on wind power rather than on solar collectors and additional thermal storage. Before actual investment decisions, further investigations must cover sensi- tivity, scenarios, and alternatives. First, results must be analysed for variations in technology costs and energy prices. Secondly, we need to observe the energy transition future we are look- ing into and how that affects choices and prices. How will the phasing out of natural gas engines affect the system in ques- tion – and how will future electricity prices develop when the system transitions? And lastly, only extreme cases were ana- lysed, not mixtures such as wind, heat pump, and storage in a combined solution.
yearly annuity of the investment of 8.9 MEUR amounts to 0.60 MEUR, which offers a benefit of 0.96 MEUR per year.
It is seen from Table 1 that these extreme investments give roughly the same yearly benefit, with a slight preference for Only wind turbines. It is seen that Sold electricity and Bought electricity differ sig- nificantly between these extreme investments. Only solar col- lector and storage reduces the sold electricity compared to the reference, so the solar collector covers most of heat demand in the summer period, reducing the natural gas engine pro- duction. Also, the electricity bought for the electrical boiler is reduced for the same reason. Only heat pump and storage significantly increase bought electricity, and Only PV and Only wind turbine significantly increase the sold electricity.
For further information please contact: Anders N. Andersen, ana@emd.dk
Made with FlippingBook - Online magazine maker