Increasing the electricity used by a store from 10KW to 80KW requires the purchase of more electrical equipment.

Knowing that the store's original power consumption is: 10KW

Knowing that the store needs to be increased to the power consumption of: 80KW

According to the relationship between the power consumption and the current, we can get the increase in current:

(80-10)/220 = 318.181818181818181818182A

Assuming that you need to buy 10 identical electrical devices, each with a power of 10KW, the total amount to be spent will be:

$500 \times 10 = $5000$$

So, to increase the power consumption to 80KW, it will cost $5000$$.