Put the electricity bill beside the hosted bill.

The saved example enters twenty two hundred watts, six hours per day and thirty days. Dividing watts by one thousand and multiplying by hours and days gives three hundred ninety six kilowatt hours. If daily runtime falls to three hours, that becomes one hundred ninety eight. Bars share one pixel per kilowatt hour. Input power and uptime are assumptions, not measured consumption or a test of local model performance. At the entered eighteen cents per kilowatt hour, three hundred ninety six kilowatt hours costs seventy one dollars twenty eight. The entered hosted monthly amount is two hundred dollars. Bars share two pixels per dollar. Hosted minus this electricity component equals one hundred twenty eight dollars seventy two. This comparison excludes cooling, depreciation, reliability, quality, throughput, taxes and token use, and neither confirms a provider price nor proves that the two services are equivalent. Keeping the same energy inputs but changing hosted cost to fifty dollars makes hosted minus electricity negative twenty one dollars twenty eight. Bars share five pixels per dollar and compare fifty hosted with seventy one point two eight electricity. The source labels this hosted advantage. Hardware payback divides entered hardware cost by a positive monthly difference only; when this difference is zero or negative, export returns null. This simplified quotient omits all other ownership and capability terms, so it is not a purchase or payback guarantee.