Most houses have a central water heater. It could be gas or electric but it has a large tank — from 20 to maybe 100 gallons — of water that […]
Category: Home
Household electrical devices (heating, cooling, appliances)
“Magic” Coating Reduces Heating/Cooling Requirements
Right after pollution reduction, doing things electrically rather than by burning fuels is how you can reduce environmental impact. We all know that if you are going to be walking […]
Home Battery Systems
Most people know about the Tesla PowerWall. While I don’t remember the name, BYD has a similar product. These units add battery storage and, optionally, PV solar to home electrical […]
Why Heat Pumps?
Maybe I picked the wrong title. What is a heat pump may be a better starting point. The one word answer to why is “efficiency”. To understand that you need […]
Off-Grid Electricity — Part 2
Larger Off-Grid System In the first part we offered a minimalist system to supply power for lights in an off-grid environment. Here we will do the homework necessary to size […]
Off-Grid Electricity — Part 1
It’s clear that our ancestors understood how to live off-grid. In fact, it was less than 100 years ago that an executive order created the Rural Electrification Administration in the […]