Definition: A Light-Efficient Community (LEC) utilizes light intelligently. It employs sound planning, designs, measures, legislation, fixtures, technologies and good lighting practices to reduce its energy costs and carbon footprint while preserving the natural environment and ensuring health, safety, security and a high quality of life for all.  Keep your light to yourself!

Light-Efficient Communities

Review the web pages and documents one by one for a 'quick course' on light waste/pollution, its sources, effects and solutions.

LEC-Kit & Downloads

Main Menu

LEC Quick Course

Go to this menu for main subjects covered by this web site.

Vital information downloads for advocates and municipal authorities.

All Documents Download

This download contains all files available to the LEC advocate. They are in PDF form as well as PowerPoint and the use is indicated as ADM- Administration concerns for LEC municipalities,

HO - Hand Outs for advocates and municipal personnel,

POLICY - Existing Municipal LEC-related policies, and

POWERPOINT - presentation on light pollution. Note: this PP

Presentation may be adapted for your own use as an advocate.

Demons in the Light Video Modules

Modules from the film in production called "Demons in the Light" are available on The video components are accessible within the particular sections to which their content refers. (Ex.; the Crime module is accessible through the Crime section on this web site.) Video components that are not yet available are so indicated. As videos become available, they will be linked on this web site.

This link takes you to the list of links which take you directly to modules available on

Video Transcripts Download

Video Modules Links

The LEC Prime Principle

Light only what needs to be lit only when it needs to be lit with the most efficient light source of appropriate intensity and colour without creating direct light trespass on neighboring properties and the night sky. Keep your light to yourself!

Get the text of the narration for each video module.

Get high quality video modules for learning and teaching about light waste, trespass, glare, pollution and their negative effects and solutions.


Books of Interest

DARK MATTERS - Nature's Reaction to Light Pollution

Told through the eyes of thirteen-year-old Joan who loves the outdoors, Dark Matters introduces young readers to the fragile animals that are impacted by our increasingly threatened nighttime skies.

Come discover the amazing night life of frogs and bats, turtles and fireflies, birds, plants, and so much more. And learn how their lives and ecosystems are negatively impacted by light--much of which is so unnecessary.

This book is packed full with fascinating and unexpected facts and illustrations, and comes with tips and suggestions on how young people can help reduce light pollution. Because dark matters.

by Joan Marie Galat - Published by Red Deer Press - 2017

NEW - release in July 2017

Video Trailer:

P 2.



A new luminaire, light years ahead of the pack, has arrived!

Called Lumicana, this sleek, high quality, high-tech, revolutionary street/area luminaire promises to meet the stringent requirements of the LEC Prime Principle, casting light only where it is needed, when it is needed at the required intensity and colour (2200K). Community lighting will never be the same. Read the introduction now!

A New Logo for a New Era!

The new logo on the left signals an exciting new era for community lighting. For the first time the LEC-Compliant logo is being used to indicate that the product or service meets the stringent requirements of a Light-Efficient Community in regards to its community lighting.

This logo will first be used on a radical, innovative new streetlight called Lumicana produced in Edmonton, Alberta, Canada by a company called Lumican.(see documents above for more information on the actual luminaire and go to web site for more information and contacts.)

Direct link to for more information

and technical specifications.

Lumicana -

Much Better Lighting for Your Community

Lumicana -

New Hope for Dark Skies

Lumicana -

About Your New


Lumicana -

LEC-Compliant Streetlight


No more glare for miles!

About the LEC-Compliant Logo and its Meaning


Demons in the Light - Light Waste - An Overview - The Film

is a high-quality, half-hour introductory film on the many  serious costs of waste light - Energy Costs, Financial Costs and Community Costs (Light Waste, Health, Culture Education and Research, Quality of Life, Flora, Fauna, The Night Environment and Climate Change)

This film is an excellent introduction to the topic of waste light and is of particular use for presentations or self-education. The film has two associated documents:

About the Film Document

This document contains the following sections:

- Why There is a Need for this Film

- About this Film

- Film Contents

- Producing the Film

- Related Resources

The Transcript Document

This document contains a complete transcript of the

narration for the film.

Demons in the Light

Light Waste - An Overview

Released February 1st, 2020

DVD Cover Art

This document is a complete front and back cover if you wish to download this film and protect it in a regular DVD box. It prints on 8.5"X11" sheet of paper. Use regular weight, semi-gloss paper for best results.