# Discover your daily electricity cost

After Geekyoto I was trying to figure out how much I spend on electricity. I believe people will change their habits once they **know the cost**.

Then after receiving my electricity bill I couldn’t actually work out how much my ‘50W spot light’ costs me a day in electricity!

The first problem is that I paid my bill with a **fixed direct debit**. So I really had no idea how much electricity I was really spending per month. I called up and changed that to **variable direct debit**.

The next problem I had, was understanding the notion of **standard energy unit** and **discounted energy unit** blocks. I won’t go into this as it is quite **complex**. Call up your supplier to give you a simpler fixed unit price which is somewhere in the middle. With a fixed price you now have a chance to calculate out your electricity cost.