Home Energy Costs and Savings - Plain-English Guides

What electricity really costs, where your bill goes, and which savings actually work. Plain-English guides for households, with numbers from EIA and DOE.

Home energy costs and savings

The student side of this site explains what energy is. This section is for the person paying for it. These guides use the same rules as the rest of Fire2Fusion: numbers with named sources, no fluff, and a clear answer up front.

Guides

The one formula worth knowing

Everything on your bill comes down to E = P x t: power multiplied by time. A 1,500-watt space heater running 6 hours a day costs about $46 a month at the average US rate. The same math works for every appliance you own. The electric energy equation guide walks through it with examples.

Teaching this at home?

Energy bills make a good real-world math lesson. Pair these guides with the student pages on electric energy and the energy equation, or print the potential and kinetic energy worksheet from the teacher hub.

Last updated: July 06, 2026