How much energy in 100g of bread?

I need more information to answer that question accurately. The energy content of bread varies greatly depending on:

* Type of bread: White bread, whole wheat bread, rye bread, etc. all have different calorie counts.

* Ingredients: The amount of sugar, fat, and other ingredients in the bread will affect its energy content.

* Serving size: 100g is a relatively large serving size for bread.

To get a more accurate answer, I recommend:

1. Checking the nutrition label: Most bread packages will have a nutrition label that lists the calories per serving.

2. Using a nutrition database: Websites like MyFitnessPal or USDA Food Composition Databases allow you to search for specific types of bread and find their calorie content.

Once you have the calories per serving, you can easily calculate the energy content of 100g of bread by adjusting for the serving size.