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reasons to switch
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Superior Light Output with Compact Design Lasts 15 Times Longer than Standard Bulbs
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home | reasons to switch | high power factor High Power Factor EcobulbŪ Technology
A key reason for electricity utilities selecting the Ecobulb® is its high power factor technical superiority. The high power factor Ecobulb® results in a 50% greater electricity distribution network load reduction (approximately 17VA per bulb) than ordinary CFLs. This increased reduction is worth approximately $16 per Ecobulb® of deferred new electricity distribution network capital investment for the utilities.
Large numbers of ordinary CFLs are also detrimental to electricity utility networks, as they cause electrical interference on their networks. This requires expensive electronic correction by the utilities. The high power factor Ecobulb® does not create this electrical interference. Consequently, $6 of network correction per Ecobulb® is avoided relative to installing a CFL.
A large Utility in Sydney, Australia recently ordered 180,000 Ecobulb® lamps , despite their higher price relative to the alternative low power factor CFLs. This was because the utility was concerned about the impact of high numbers of CFLs on performance of the peak load shedding control systems.
An electricity utility network that replaces one million incandescent bulbs on at peak network times with Ecobulbs® will save $16 million more ($12 plus $4 per bulb times 1 million Ecobulb® lamps) than if these bulbs were replaced with ordinary CFLs. Consequently it is extremely cost effective for electricity utilities to implement Ecobulb® projects, rather than let the market replace incandescent bulbs with ordinary CFLs.
Other light bulb manufacturers have attempted to develop high power factor CFLs. However, these bulbs are typically larger, with lower light output and reduced lifetimes. As they are more expensive to manufacture with no perceived consumer benefit, these developments have invariably ceased. It is likely that they will eventually produce viable high power factor CFLs to compete against the Ecobulb®. However, the Ecobulb® then has a 15 month first mover advantage. This is because it takes 15 months to complete the CFL lifetime testing required by the electricity utilities before they would purchase these bulbs.
Comparison of the 20W quality brand CFL with the 20W Ecobulb® performance specifications
expensive than their 6,000h CFL.
The following table compares the net benefits for an electricity distribution utility per high power factor 20W Ecobulb® installed on their network at peak load times relative to the 20W low power factor quality brand CFL.
Comparison of the net
benefits for an electricity distribution utility per 20W Ecobulb®
relative to the 20W quality brand CFL
This analysis demonstrates that there is a $16 net benefit to an electricity distribution utility per Ecobulb® on at peak network times relative to the low power factor quality brand CFL. Consequently, it is considerably more cost effective for such utilities to invest in the Ecobulb®, even if considerably lower priced CFL’s are available.
2 Based on
replacing a 75W incandescent bulb. 3 Based on the average approximate cost for electricity distribution utilities of $1NZD ($0.72USD) per watt of new
distribution line capacity. 4 Installation of Compact Fluorescent Lamps Assessment of Benefits, Report for Electricity Commission,
Parsons Brinkerhoff, April 2006
Leading Harmonics Expert Neville Watson Analyses Harmonic Impact of CFLs
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