Efficient Products Program - Lighting
High-Pressure Sodiums
High-pressure sodium (HPS) lamps produce maximum light using minimum power. Their luminous efficacy is two to four times greater than that of mercury vapor lamps, for instance.
Save money
Hydro-Québec rebate
| Replacement product | Rebate |
|---|---|
| Fixture with HPS lamp | $40/fixture |
Typical savings
| Before | After | Energy savings | Rebate |
|---|---|---|---|
| 25 fixtures with 400-W mercury vapor lamps | 25 fixtures with 150-W HPS lamps | $2,495/year*
Assumptions:
Electricity rate: 9¢/kWh Time used: 4,200 hours Ballast losses included |
$1,000 |
You can't lose
- Greater luminous efficacy
- Energy savings of 50%
- Service life of up to 6 years
- Start-up time of 2 to 3 minutes
- Environmentally friendly (lower mercury content)
Outdoor applications
As HPS lamps emit a light that varies from golden to orange, they are used where the color-rendering index is not an important consideration. They are very good for security lighting and outdoor architectural lighting in areas such as these:
- Parking lots
- Roadways
- Industrial complexes
- Parks