Office Luminaires
Guidelines for Frontrunner
Public Procurers / / Photos courtesy of topten.eu
Product group covered: / Eight categories of office luminaires are covered including: ceiling-mounted-, recessed-, suspended-, floor-standing-, desk and wall-mounted luminaires, spots and downlights.
Product availability: / All products listed on www.topten.eu meet the criteria listed below.
Potential energy [1]and cost [1]savings: / The luminaire efficiency factor (lm/W) is the ratio of the luminous flux of the luminaire (lumens) to the power (watts). It is influenced by the luminous efficacy of the light source, the efficiency of the ballast, and the light output ratio of the luminaire. The table below shows the difference between the luminaire efficiency factors of the best Topten models and comparable fluorescent lights, and the consequent cost savings per 100 units.
Category / Best Topten model (lm/W) / Comparable fluorescent lamp (lm/W) / Cost savings (100 units) over 15 years
Ceiling mounted / 84 / 37 / €33,200
Recessed / 81 / 30 / €29,800
Suspended / 98 / 39 / €20,500
Floor-Standing / 108 / 33 / €51,900
Wall-mounted / 97 / 39 / €27,300
Spots / 74 / 23 / €14,500
Downlights / 105 / 23 / €2600

Procurement criteria – Updated: April 2014

The following criteria can be inserted directly into tendering documents. The Topten specifications are updated continuously. The newest versions are always available at www.topten.eu.

Subject matter: / Purchase of Office Luminaires
Technical specifications:
Ballast
·  Only electronic ballasts (luminaires with magnetic ballasts are not accepted)
Efficiency
Maximal energy efficiency index PGN[2]:
·  Ceiling-mounted, Floor-standing and Suspended luminaires:
·  Wall-mounted luminaires:
·  Recessed luminaires, Downlights:
·  Spots:
·  Desk luminaires: / PGNmax = 20[3]
PGNmax = 22
PGNmax = 23
PGNmax = 25
PGNmax = 26
Power in standby mode
·  Manual control (on/off), non-dimmable: max. 0.0 watts
·  Dimmable ballasts: max. 0.5 watts (stricter than Minergie, corresponds to The Blue Angel)
·  Luminaires with presence/daylight control: max. 0.5 watts
Additional criteria for LED luminaires
·  Colour Rendering Index (CRI): Min. 80
·  Power factor: up to 25 watts min. 0.5, above 25 watts min. 0.9
·  Lamp life (70% of initial light output): min. 20'000 hours
Glare
·  CIE Unified Glare RatingUGR in standard room according to the German Lighting Technology Association (LiTG): Max. 25
Test laboratory
·  The test laboratory must be accredited by the responsiblepublic authority
Verification: Bidders must supply a declaration regarding their product’s compliance with the above requirements, supported by technical data and results from tests carried out in accordance with EN 13032 or equivalent, or a relevant third-party certification/Type I eco-label attesting to compliance. Where compliance with these criteria is dependent upon defined usage patterns or other factors these must be clearly identified in the declaration.

Notes on implementation

·  To maximise savings and minimise environmental impact, contracting authorities should assess whole-life cost when purchasing lighting. This should take account of the usage pattern expected, average lamp life and disposal costs.

·  Public authorities could also consider using performance (functional) rather than conformance-based specifications e.g. tendering for “energy efficient lighting solutions” so that suppliers have the opportunity to propose the best value lighting systems available on the market and also have the opportunity to offer more innovative solutions. Public authorities who wish to develop tailored criteria for these situations are invited to contact the Procura+ team.

Advice and support

If you would like further assistance in using the information presented here in your own procurement actions or more information on Topten Pro please contact the Procura+ team at: +49 761 368 9248

An expression of interest form is also available on www.topten.eu/pro for public authorities who would like support to apply these criteria in an upcoming procurement process.

What is Procura+?

Procura+ is an initiative designed to help support public authorities in implementing Sustainable Procurement. The campaign is run by ICLEI – Local Governments for Sustainability, the Topten partner for public authorities. www.procuraplus.org

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[1] These represent rough figures comparing the best product currently available, with an inefficient model – see www.topten.eu for more details.

[1] Based on an electricity price of €0.15/kWh

[2] Energy efficiency index: PGN (P, ΦL) = P / (0.01029 * (0.88 * √ (ΦL) + 0.049 * ΦL)) withΦLluminous flux of the luminaire (lm) and P power (W).Based on the “Blue Angel” criteria;lower PGN value = better energy efficiency.

[3] Stricter than the requirements of „Blue Angel“