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Lighting Assessments

This is simplified page discussing lighting assessment, and we hope you enjoy reading it. If you require a Lighting Assessment Report for a planning application please pick up the telephone and call, and we can talk you through the process (free of course), or send over some plans via email, and we'll quote for the work required. Thanks.

There are three primary things to consider when undertaking a lighting assessment.

1 - Light Everything Properly

A light bulb (by example) will light a given area adequately. For example a small light bulb might light a small room to the point where the light level is adequate for use as a . . . kitchen. . . but it would not produce enough light, to light a large room for use as a  . . . laboratory.

So when we write a lighting assessment report we have to carefully work out how an area is illuminated, and whether it will be adequately illuminated given the intended use. So like the example below we might use a computer model to mapping light levels.

lighting_assessment

2 - Don't Splash Light All Over the Place

Light above the horizon is considered bad. It gives rise to light pollution, and is in most case is a sign of waste, and a badly designed lighting system. Light pollution, also known as photo pollution, is the presence of anthropogenic and artificial light in the night environment. It is exacerbated by excessive, misdirected or obtrusive use of light, but even carefully used light fundamentally alters natural conditions.

Image result for light pollution creative commonsThis picture (from space station: creative commons license) is of Paris. Look at how much light is spilling upwards. That is mostly wasted energy. Mon dieu!

3- Use as Little Energy as Possible

In just 10 years we have gone through 3 commonly used bulb types. It is hard to keep up. Even technology such as LED is improving year on year with emitters becoming more and more efficient. The problem as always to choose lights which provide the best possible output for the least amount of energy used. Just looking at LED technology the least efficient emitters can use 10 times more energy than the most efficient. So it is not just a case of choosing LEDS, there are choices to be made beyond that.