Energy & Water Efficiency

The City of Fremont has completed a comprehensive energy and water efficiency upgrade project with Opterra Energy Servicesan energy services company (ESCO). The scope of work included:
  • Converting all primary roadway and residential street lighting to energy-saving LEDs.
  • Upgrading all public park and plaza lighting to energy-saving LEDs.
  • Upgrading all public facility lighting and plumbing fixtures to high-efficiency options.
  • Installing weather-based irrigation controls at city parks.
  • Installing energy-saving pool pump controls at the Aqua Adventure Water Park. 
Together, these measures are projected to save an annual 4.7 million kWh of electricity, 12,000 therms of natural gas, and 8.7 million gallons of water, reducing the City's greenhouse gas footprint by a total of 976 metric tons of carbon dioxide.

LED Streetlight Upgrade

The installation of the new LED standard "cobrahead" streetlight fixtures began in October 2016. The majority of streetlights along major roadways and residential streets have been upgraded at this time.

For neighborhoods with non-standard “decorative" streetlight fixtures (top hat, globe, mission bell, teardrop, lantern, or box-shaped), the upgrades are almost complete.

For private streets, the City does not maintain the streetlights in those areas, but residents are encouraged to discuss an LED upgrade with their homeowner’s associations (HOAs).


What are the benefits of converting the City's streetlights to LEDs?

LED streetlights provide a number of benefits, including improvements in safety, reductions in maintenance costs, and greenhouse gas emission reductions:
  1. Improved light quality: The City's existing streetlights contain HPS (high pressure sodium) lamps. HPS lighting is known for its warm yellowish-orange glow, while LEDs (light emitting diodes) provide a natural light color, similar to that of moonlight. In addition to its yellow color, the light provided by HPS has a very low color rendering index (CRI), making it difficult to differentiate between colors of similar hue, especially in the dark. LEDs, on the other hand, offer a broad spectrum of light, allowing one to see a full range of colors even at night. Finally, LEDs are a point source light, meaning that they illuminate only the areas that they are engineered to illuminate, helping to reduce light pollution and maintain a dark sky. In addition, this allows LEDs to provide better coverage on the ground than their HPS counterparts, helping to eliminate dark areas between poles and making our streets and sidewalks safer for drivers and pedestrians, and aligning with our Vision Zero 2020 goals.
  2. Reduced energy consumption: LEDs use approximately 1/2 to 2/3 less energy than their HPS counterparts, making them an environmentally preferable choice. Converting all of the City's streetlights to LED is estimated to reduce the City's energy consumption by nearly 4 million kilowatt-hours of electricity annually, lowering greenhouse gas emissions accordingly by 775 metric tons and saving the City $590,000 on its annual electric utility bills.
  3. Longer lifetime: Our current HPS lights have an average lifetime of about 25,000 hours, whereas LEDs can last over 100,000 hours. This means that there will be overall fewer lighting outages, and that the City will not need to replace the new LEDs for approximately 20 years.
  4. Reduced maintenance costs: Maintenance costs for the upkeep and repair of the City's 16,000+ streetlight inventory is no easy task. With a new inventory of lights that will not require replacing for the decades to come, the City will be able to save over $280,000 annually on its streetlight maintenance costs.

Standard Cobrahead Streetlight Fixture


Non-Standard "Decorative" Streetlight Fixtures

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