Shedding light on LEDs


Marcus Brodin, commercial director at Future Energy Solutions (FES), outlines the five key considerations when selecting LED lighting.

According to the Carbon Trust, lighting accounts for one sixth of the UK’s total electricity usage. If the government is going to meet its stated targets for carbon reduction – at least 34 per cent by 2020 and a minimum of 80 per cent by 2050 when compared to 1990 levels – the nation’s 1.8 million commercial buildings will need to drastically reduce their energy consumption.

FES

To the rescue

With rising utility bills and growing legislative pressure for companies to reduce their carbon footprints, it is not surprising that a technology that can save money and lower carbon footprints is turning heads. Light emitting diode (LED) lighting has created a seismic change not seen since gas lamp manufacturers witnessed the introduction of the carbon filament lamp. So much so that the global LED lighting market will be worth $25.4bn in 2013, according to a Digitimes Research Special Report.

Understanding the changes being brought about by LED light sources means that the entire value chain now has to engage with a re-education on the basics of light generation and application. Not all LED lighting solutions are the same and in order to get the maximum possible benefit from this technology, it is important to be able to differentiate what’s on offer and make the right purchasing decisions.

The five most important questions to consider when choosing an LED solution are as follows:

  • How much should I spend?

Perhaps the biggest barrier to widespread adoption of LED lighting over recent years is its price. While production costs have fallen dramatically in the last few years, some solutions are now considerably cheaper than others.

When it comes to LED lighting the old adage ‘you get what you pay for’ should be kept in mind and the pitfalls of selecting a poor quality product must be avoided at all costs. Premature product failure, poor lumen output, low lm/W and inefficient design are just some of the factors that can compromise a lighting scheme. In addition, the knock on effect of having to replace products can quickly have a negative effect on any return on investment (ROI).

There is no definitive answer as to how much should be spent but it’s a fair assumption that if you buy cheap, the chances are that you will have to buy twice.

  • Where is it from and how important is a warranty?

The vast majority of low cost and poor quality LED lighting products originate in China and although the country is beginning to address this issue, buyers should still beware. According to Lux Research, China’s LED lighting market will more than double to $7.4bn in 2017, meaning that a significant number of the estimated 5,000 manufacturers there are undercutting their rivals by using low quality components.

Unfortunately, if something goes wrong with a Chinese product, the cost of sending it back from the UK is likely to be prohibitive. Conversely, a product that is manufactured, sold and under warranty in the UK will mean a swifter resolution if there’s a problem.

  • Will it do what it says it will do?

When specifying a product the chosen manufacturer should always be asked to provide full photometric and electrical data, as well as conformance certificates to ensure that the product will provide you with the full benefits of your investment.

Although this information can be useful in terms of calculating ROI, be sure to establish whether the tests were carried out in-house or by a reputable third party testing organisation. Results from the latter are always preferable.

  • Which accreditations should it have?

A lack of recognised and enforced standards has resulted in a dramatic variation in the quality of products currently on the market.

However, LED luminaires sold on the European market should, by law, carry the CE mark, which is a statement by the manufacturer that the product complies with all the relevant EU legislation, including product safety standards and directives.

  • What level of energy savings and carbon reductions should I expect?

The answer to this question depends on two factors – the quality of the products and how they are configured and used.

One key piece of advice is to validate the output of a luminaire. A 20W bulb might use 25W, which means that any energy usage calculations could be incorrect by as much as 20 per cent. Also, a product that needs replacing after 50,000 hours will result in a higher total cost of ownership than one that last for 90,000, so always factor this in and be realistic.

The energy savings can be highly impressive. For example, FES recently finished Phase 1 of a project for National Car Parks (NCP), which, when completed, will have involved the installation of over 65,000 energy efficient LED luminaires in 149 multi-storey car parks. The use of LED lighting will generate energy savings of over 65 per cent and the effect on the environment will also be significant. NCP’s CO2 emissions will be reduced by 11,000 tonnes per annum and mono-nitrogen oxide (NOx) will be lowered by 248lbs over the same period – this is the equivalent of 16 acres of forest being saved and 11 cars being removed from the road.

For further information please contact Marcus Brodin on +44 (0) 207 908 3921 or marcus.brodin@feslighting.co.uk

www.feslighting.co.uk

Advertisements

One thought on “Shedding light on LEDs”

  1. LED lifetime really vary as well. They say xxxxx amount of hours but that is not the fixture or the bulb but the life of the LED chip. The power supply is the weak link if it is built inside the fixture, when it goes out you replace the fixture. Watch the warranty and you will see how much they really believe in their claims.

    Like

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s