Amazing Low Power Heater

In the past two weeks I’ve acquired a brilliant personal heater. A heated hoodie. This is a beautifully made garment; lovely and soft and comfortable to wear indoors. Most importantly it only uses about 10W to give amazing warmth. It has three heating panels – one at the back and two in the front (see image). It far surpasses other heated clothing I have tested. I certainly find no need to have a heater on in a room when I’m wearing this. I bought it @
heated hoodie

2017 Annual Report – Our Energy Transition

I have just released my Annual Report for 2017. In many ways 2017 was a year of consolidation – we made steady but not spectacular progress toward our fossil fuel free goal. The major step forward in 2017 was the installation of a Tesla Powerwall 2 in September. This is going to be a game changer! In the five months which we have had it in place only about 3% of our electricity has come from the grid. We will not achieve this for the whole of year 2018 but I think we may come close if we add more solar PV.

You can download the 2017 Annual Report from here.

Our Warm Low Energy Winter

I have just completed my report on our home heating experience over a somewhat cold 2017 Canberra winter.  This year for the first time we did not heat our home over winter.  We heated ourselves.  We kept nicely warm and made some very impressive energy savings.

You can view an embedded version of the report in the window below – you can also download the report from the bottom of  the window.

More Work on Far Infrared (FIR) Heating

Over the first three months of this year I’ve been been delving further into FIR heating.

I have produced a short document which describes what I have been doing.


This document covers two topics. First of all, I talk about a very simple ‘poster’ FIR heater which I have imported from Europe: it weighs about 400g and rolls up just like a poster – this is a very interesting device. For some time now I’ve been thinking about how to improve the temperature control of FIR heaters – in the second part of the document I describe my testing of two potential controllers.

2016 Annual Report on our energy transition

About a year ago I laid out our plans for becoming a fossil fuel free family in my book ‘Our Household Energy Transition: Becoming a Fossil Fuel Free Family.’

Its now one year on (Feb 2017): we’re going well and are still on track to being fossil fuel free within the next few years.

You can find my 2016 Annual Report here.

cover page


I’ve included some more details at the ‘Household’ tab.

Far Infrared Heating Panels: Beautiful Heat; Low Energy

Over the past five months of the Canberra winter we’ve been heating our house using Far Infrared (FIR) heating panels.

 I’ve prepared a report assessing the heating performance which you can access from here.

sway cover 2


In just a few words I believe FIR heating is brilliant – gorgeous thermal comfort and extremely energy efficient.

New Book: Our Household Energy Transition

I have just released my latest book:
Our Household Energy TransitionBecoming a Fossil Fuel Free Family.  You can download this from the ‘Downloads’ or ‘Household’ tabs on the yellow bar at the top of the page.  You can also view an embedded version of this book at the ‘Households’ tab.  This book describes our journey, so far, to fossil fuel freedom.

cover pictureI always intended this site to simply be a repository of books/reports that I produce from time to time.  Over the past four years the scope of my work has broadened: I started out in 2012 producing the first of my three books on the carbon footprint of aviation; I then moved on to electric vehicles; and now I have released my fifth book.  While all the books are on related topics, for ease of access I’m placing new material on separate pages.

The aviation carbon footprinting material is still the most commonly viewed information on this site and I am therefore giving this the easiest access – you can view some of this material from the ‘Recent Posts’ links to the right or by scrolling down the home page.  Alternatively you can use the ‘Aviation’ tab on the yellow bar at the top of all pages on the site.  The tab bar also gives access to the ‘Electric Vehicles’ and the ‘Household’ material.  All my publications are accessible from the ‘Downloads’ tab.