Summary

Rome’s ‘Roma per Kyoto’ climate change strategy emphasizes the importance of working with large businesses in order to save energy and reduce greenhouse gas emissions. The partnership with the retailer IKEA is one example of this, demonstrating how a large company can reduce emissions and help other retailers in the community to improve their own practices.

Purpose

In 2007 the IKEA company launched the project ‘IKEA Goes Renewable’ with the double purpose to increase the percentage of renewable energy used by stores, factories and offices and to reduce energy consumption.

IKEA Rome wants to contribute to this corporate goal by consuming less electric energy from commercial lighting, thus delivering sustained reductions in the carbon dioxide emissions of the two IKEA stores in Rome. Moreover, IKEA Rome wants to provide a best practice for other major malls in the Rome municipality and help the city develop a checklist featuring, for example, best practices cases and templates for action plans, that will be shared with retailers in malls around the city. Thus, IKEA Rome aims to contribute to both the corporate goals of IKEA and the municipal targets laid down in ‘Rome per Kyoto’.

What is it?

The project is part of the voluntary agreement ‘Rome for Kyoto’ run by the city of Rome. As part of this strategy, IKEA is participating in monthly meetings with the city and other stakeholders, sharing data relating to key activities. IKEA‘s Energy & Emission Management check-lists may be offered to small-medium enterprises, to help implement a proposed ‘green label’ scheme to promote energy efficient products and activities. In cooperation with the municipality, external events, such as an ‘eco-festival’ have taken place and IKEA is engaged in awareness-raising activities in the community, promoting energy efficiency directly to households and in schools.

To meet IKEA Rome’s own commitments, the company will replace existing halogen spotlights with new low-energy spotlights. As a result, IKEA Rome will save 495,000 kWh/year equivalents to € 52,000 per year. The 35W and 50W halogen spotlights will be replaced by 20W high pressure discharge lamps also known as HID (high intensity discharge) lamps. In total, 3620 new spotlights will be installed in Rome’s stores.

How does it work?

The new HID lamps are more efficient and durable due to:

Light/heat relation

The light/heat relation is very important because existing halogen spotlights produce 93% heat and 7% light whereas the new spotlights produces 75% heat and 25% light.

Light bulb lifetime

The light bulb lifetime is different: existing spotlights have 1 year (4.000h) lifetimes while new spotlights have 3 year (12.000h) lifetimes. Thus, the light bulb of the new spotlights lasts three times longer than the old ones.

Energy efficiency

  • 35W halogen spotlight generates 20 lm/W = 750 lumen/spotlight
  • 50W halogen spotlight generates 20 lm/W = 1000 lumen/spotlight
  • 20W HID spotlight generates 80 lm/W = 1600 lumen/spotlight

Compared to the existing 50W spotlight, the new spotlight runs on less than half the energy.Compared to the existing 35W spotlight, the new spotlight generates twice as much lumen output. This means saving both in lowered electric energy consumption and fewer spotlights needed.

Light bulb replacement

The light bulb is easy to replace and the procedure doesn’t differ in any essential way from handling other lamps.

Application

New spotlights can be installed in three areas of the store: showroom, markethall & ‘other’. This is the number of new spotlights for IKEA Rome’s stores:

IKEA Porta di Roma Number of existing spotlights Number of new spotlights
Showroom 1025 871
Markethall 1055 897
Other 250 212
IKEA Anagnina Number of existing spotlights Number of new spotlights
Showroom 820 720
Markethall 770 720
Other 216 200

The new HID spotlights are more powerful than the old halogen ones. On an average, a medium store should be able to reduce the number of spotlights by approximately 15 per cent.

Results

  • The light bulb of the new spotlights lasts three times longer than the old standard spotlights
  • The new spotlights produces more light and less heat than the old standard spotlights
  • Compared to the old 50W spotlight the new spotlight runs on less than half the energy
  • Compared to the old 35W spotlight the new spotlight generates twice as much lumen output
  • The light from the new spotlight appears fresh and crisp with excellent colour rendering
  • The light bulb has a twist and lock function, making it easy to replace

CO2 emissions reductions

The installation of new spotlights in IKEA Rome’s two stores has saved 245 tCO2e (CEF: 496 gCO2/kWh). This illustrates the huge potential for savings in commercial properties.

Energy efficiency

IKEA Porta di Roma Existing spotlight New spotlight
Total KWh/year 473,000 187,000
Reduction in energy use 61%  
IKEA Anagnina Existing spotlight New spotlight
Total KWh/year 362,000 153,000
Reduction in energy use 58%  

Costs

Cost analysis for electricity and maintenance: difference between two spotlights

IKEA Porta di Roma Existing spotlight New spotlight
Electricity cost for a year € 57,000 € 22,500
Average maintenance cost for year € 7,000 € 10,500
Total Annual cost € 64,000 € 33,000
IKEA Anagnina Existing spotlight New spotlight
Electricity cost for a year € 43,000 € 18,000
Average maintenance cost for year € 5,000 € 9,000
Total Annual cost € 48,000 € 27,000

Cost analysis for project

Number of spotlights for store Cost of project
IKEA Porta di Roma: 1980 € 104.000
IKEA Anagnina: 1640 € 86.000
Total cost for IKEA Rome stores € 190.000

Next steps

As mentioned before, IKEA Goes Renewable is part of a corporate strategy with ambitious targets. IKEA Rome will strive to meet these obligations whilst continuing to play an active role in the delivery of ‘Roma per Kyoto’. Education and training in public schools, plus guided tours of IKEA stores, are one activity through which IKEA will contribute towards municipal targets to reduce energy consumption and emissions. IKEA Rome will also assist other retailers to improve their own environmental performance by sharing information and supporting best practices.