Free Lighting Hours tool available

LightingHoursThumb Just to let everyone know that I have uploaded my new Lighting Hours tool, which is free!

This was jolly fun to develop as it is a “mashup” between some code that Greg Pelletier developed which uses astronomical data to calculate sunrise and sunset at a given latitude and longitude, and some additional code from Jamie Bull which does a sexy internet lookup of a place name, postcode, landmark etc via Google Maps and returns a latitude and longitude. Add into the mix some nifty working out of TimeZones and Daylight Savings dates (e.g. First Sunday in March) for any given year and you end up with something which – IMHO – is quite neat. Hopefully useful too!

Click the link above or select Lighting Hours from the Excel Tools menu to learn more. If you want to download it you will need to give me an email address but you can opt out of marketing or future communications. Enjoy!


Mottainai! PWC report indicates we are too late for two degrees.

The Japanese have a word Mottainai which “reflects a sense of regret concerning waste” which can “lead to anger or protest when the person who is observing the utter waste is incapable of holding back their emotions”. Well that sure sounds like a polite way of describing how I am feeling just now….

Why? Well I have just read a new report from PWC: Too late for two degrees? which makes very sobering reading.

We know that each year that we allow CO2 and other greenhouse gasses to accumulate in the atmosphere means that subsequent reductions need to be greater.

Back in 2000, in order to have a 50% change of global temperature rises not exceeding 2 degrees Centigrade, we needed to decarbonise our economy at the rate of 3.7% per annum to 2050. Today that target has risen to 5.1% a year because we have wasted the last decade with an average global rate of decarbonisation of just 0.8% a year.
read more…

The Global Energy Assessment – is it a book or a weightlifting aid?



An Amazon courier arrived at my house last Friday with one the usual book-shaped boxes. When he handed it over I almost dropped it – instead of  the usual light package I was hefting 5.2 kg  – yes really! – of a single title, the Global Energy Assessment. This huge tome runs to an incredible 1900 full-colour glossy pages which look to contain a veritable cornucopia of energy facts and figures. It was launched at the Rio +20 conference and “is the first ever fully integrated energy assessment that analyzes energy challenges, opportunities and strategies, for developing, industrialized and emerging economies.

This is one book I certainly won’t be reviewing (I read all the books I review cover-to-cover). However I will give some feedback on my own thoughts as to its usefulness at some point in the future. read more…

New website!

Welcome to the new Sustain Success Website. I have gone for a site that will allow more regular updates with articles, sections from my new book and a blog on topics that I hope energy and resource efficiency practitioners will find useful.

Our mission

To deliver outstanding results for customers and support best practices in our profession.

Energy and Resource Efficiency without the tears

Niall Enright’s book was published in June 2017 and last updated in September 2018.

To get the FREE PDF visit the download page.


To buy a print version of the book or order the companion files please visit our store.

If you appreciate the book and want to make a donation towards the publication costs (and support future publications),  click the link below. This is entirely optional!


Free Lighting Hours Tool

We were so frustrated at SustainSuccess with trying to find daylight hour tables for client locations that we wrote our own Excel/Google Maps/NOAA “mashup” to calculate lighting hours for any location on Earth! We are providing it FREE to fellow practitioners. Simply fill in this form and we’ll send you a download link.


Ideas and Challenges

Despite self-congratulatory case studies to the contrary, the reality is that Sustainability and Resource Efficiency are NOT EASY to implement successfully in organisations.

In a series of blogs, articles, book reviews, and extracts from Niall Enright's book you will find hints, tips and suggestions to make Sustainability a Success.

Contact SustainSuccess

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A:19 Harboro Road
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Posts, Articles and Reviews

March 2024