Category Archives: Energy

The Rocket Mass Heater Builder’s Guide

This kickstarter was originally planned for last year … its finally arrived. Until now there has really only been one book on Rocket Mass Heaters by Ianto Evans, but having read it and built rocket stoves guided by it, I feel it is out of date (though I haven’t seen the latest edition). There has […]

Dual Sun

A french company is bringing to market a solar panel that combines photovoltaic cells with solar hot water. The combination is not only interesting in a utilitarian way but promises improved performance of the PV cells by reducing the panel temperature (PV efficient drops as temperature rises). I wonder what this combination implies in terms […]

Tesla Energy presents Powerwall

no more batteries and battery rooms no more charge controllers no more grid tie no more cable messes Tesla just announced the Powerwall one integrated unit to hang on a wall… a battery with a purpose … connect it to a photovoltaic array and (if you want as backup) the grid and you are good […]

Cooking on a Rocket Mass Heater (Rocket Stove)

As winter set it and the rocket stoves started burning regularly I thought about using them for baking bread … which I do regularly and I thought would be great if I could do without having to use the electric oven. The stoves can be used for cooking but it takes them a long time […]

Split wood with a tire

I saw this video probably a couple of years ago. This year I ordered a new batch of wood and decided to give it a try … and all I can say is WOW! It doesn’t always go smoothly (depends on the size of the wood and tire, knots in the wood, etc.) … but […]

The Second First Rocket Stove

It was on my mind for many months … rebuilding the first rocket stove. It worked good – though not great. There were some design errors and compromises and during the last winter there were more smokeback events that I could not explain. I wasn’t keen on taking apart something that (kinda) worked and embarking […]

Village Video DVD: How to Build Rocket Mass Heaters with Ernie and Erica

When I started playing with rocket stoves the main resource available was the Rocket Stove book. Though I still consider it a must read for anyone heading into Rocket Stove territory, I do not consider it sufficient. It left me with many questions, it has some outdated information and some things that, knowing what I […]

How Burning Works

There’s an interesting group called All Power Labs who research biomass gasifiers: in lay terms they make machines that can convert hay, wood chips, nutshells (a large variety of biomass substances) into clean gas products which can be used to power other things – such as a diesel engine generator (which they do). You can […]

Rocket (stoves) here, rockets there, rockets rockets everywhere

We’ve built two sort-of rocket stoves (red and bell) so far … and they (though far from optimal efficiency) have been magical, pleasant and a godsend to our quality of life (being warm and comfortable in winter). Rocket stoves are simple (but not idiot-proof) technology, built from common and available materials, they are super efficient […]

Fixing Our First Rocket Stove

Our first (bedroom) rocket stove worked really well … it literally saved us during our first winter here. We did not have enough wood prepared … and it’s super efficient burn-and-battery kept us warm. However there was one recurring problem. The top surface was made of metal. It was intended to both radiate heat quickly […]