What to expect from the Site Visit:
Green Business staff will go over the "Energy" portion of the checklist with you and ask you to furnish supporting documentation for all measures marked yes on your checklist. If there are opportunities for energy efficiency improvements, our staff may direct you to the San Francisco Energy Watch Program, which would entitle you to a free, in-depth audit of facility energy use, and rebates for upgrading to more energy efficient measures.
During the site visit, our staff may need you to:
- Find any spare light bulbs you have, so we don't need to climb ladders to examine light fixtures.
- Find out about who is responsible for the heating and cooling system in the building.
- Find out what your business' policy is (and whether it is implemented) regarding power management of computers (talk to the IT staff).
- Arrange to have those responsible for heating, cooling, and ventilation (HVAC) and other maintenance staff available for questions during the assessment.
Please use the following resources to help your business implement and meet the San Francisco Green Business Program energy efficiency standards.
- Heating Ventilation and Cooling (HVAC)
- Computer Power Management
- Appliances and Refrigeration
- Additional Resource List
Lighting is often the most effective way to reduce energy use, and the incentives available through Energy Watch make these changes easy to implement. Here are the most common types:
- Light Emitting Diodes The San Francisco Green Business Program requires applicants to upgrade inefficient bulbs to Light Emitting Diodes, or LEDs. LEDs are semiconductor devices that produce visible light when an electrical current is passed through them. There are many LED options, which are more energy efficient and longer lasting than fluorescents and incandescents, and also do not contain toxic mercury. Some examples of LED options can be viewed Here. For more information, visit Energy Star lighting.
The standard incandescent is the most common light bulb. This is the pear-shaped bulb you have seen more than any other. The label should have a wattage listed, most commonly in the 60-100 W range. Applicants to the Green Business Program must replace incandescent bulbs with LEDs.
Common halogen bulbs are large flood lamps with a screw-in base, or bi-pin bulbs that go into track or recessed light fixtures. Replace the screw-in bulbs and pin-based bulbs with the LED version of the same lamp type. Remove any non-spotlighting halogen fixtures with ones that will accept LEDs. Be sure to get dimmables bulbs if the fixture uses a dimmer.
- Compact Fluorescent (CFLs)
If your business has CFLs in place, they do not need to be immediately replaced by LED bulbs. There are three common types of compact fluorescent bulbs. The first (3.1) is the two-pin based lamp. The second (3.2) common type is the spiral cone, which is often hidden in the other behind frosted glass. The third (3.3) looks quite similar to the standard incandescent, with the exception of a larger base that holds the ballast of the compact fluorescent. These are commonly used in industrial applications, and are very common in the recessed reflective cans seen in many offices. When choosing a compact fluorescent, be skeptical of the lamps that aren't Energy Star certified. Be sure to get bulbs that have a high color rendering index (CRI), which is on a scale of 1-100. CRI measures how well the light source is able to reveal the colors of various objects faithfully in comparison with a natural light source. Also look for the color temperature on the label. A ‘warm white' lamp would be closest to the color of an incandescent, at about 2700 K. If you'd like brighter, whiter light closer to daylight, look for color temperatures in the 4000K to 5000K range (the higher the color temperature, the whiter the light). Note that compact fluorescents are also made in PAR and R type shapes to replace halogens, however these generally provide a flood light effect rather than the spotlighting effect of a halogen bulb. To get the spotlighting effect, LEDs should be used.
- Linear Fluorescent Lamps
These are the most common fluorescents in commercial applications. The long thin tubes that we see in warehouses, offices, and businesses everywhere are very efficient, but there are a few types: the T-12 ,the T-8, and the T-5 lamp. The T-12 has a diameter of 1.5 inches, the T-8 is 1 inch, and the T-5 is 5/8 inch in diameter. The older T-12 lamps are less efficient and require magnetic ballasts, while T-8s and T-5s are more efficient and use more efficient electronic ballasts. In addition, electronic ballasts operate at a much higher frequency, minimizing the flicker of the lamps, which reduces eye fatigue and headaches that can be experienced by some people.
The SF Green Business Program does not allow T-12 lamps or magnetic ballasts, and T-12 lamps do not meet the new federal standard for fluorescent lighting. San Francisco outlawed their use in 2012 to comply with federal standards. Switch to T-8 lamps and electronic ballasts now--the sooner you upgrade the sooner you start to see significant savings on your monthly energy bill.
- Exit Signs
The San Francisco Green Business Program requires that LED exit signs be used in businesses seeking certification. It is sometimes difficult to tell which kind you have without opening the sign. Look for a strip of tiny red or green lights to indicate that you have an LED sign, one or two two-pin bulbs that indicate you have an incandescent sign, or two bulbs that look like compact fluorescents to indicate a CFL sign (fig 5.1). The incandescent bulbs are usually 15-25 W each, and are labeled as such.
- Occupancy Sensors
For spaces with variable occupancy, like restrooms, conference rooms, storage rooms, hotel bathrooms, and lockers, consider using occupancy sensors. When doing a survey of your facility's energy use, look for places where lights are on and no one is home. If these are spaces that are empty for long periods and have short bursts of use, they could be a good fit for an occupancy sensor. There are many options for the sensors: most used in commercial settings have a sensor integrated into the switch. In guest bathrooms, you might use a sensor with an integrated LED nightlight, so that guests don't have to leave the light on in order to find their way to the restroom at night. For spaces with one owner (like a private office) it is simpler and cheaper to educate the users to turn off lights themselves.
2. Heating Ventilation and Cooling (HVAC)
These are the points most often skipped in the checklist. Depending on your business' situation in the building (tenant, owner, subletter, etc) you will have zero to complete control over the heating and cooling systems. If you are a tenant in a multi tenant building, the building manager is likely to have chosen the systems, and maintains them, in which case, you as a tenant would be responsible only for the setpoints (74ºF for cooling and 68ºF for heating) on your thermostats and use of small energy-efficient heaters and fans. When the facility is closed, HVAC should be turned off or should maintain temperatures of 55ºF for heating and 90ºF for cooling. However if your company owns the building, you would be expected to answer all questions regarding HVAC equipment and maintenance.
3. Computer Power Management
Computers are serious energy consumers, especially considering the amount of time they sit unused: while you are at a meeting, lunch, or even home for the evening. Many people assume that the screen savers indicate that the computer is in low power mode, but in fact there is little savings. Still others believe that turning the computer off and on uses more energy. Neither is true. In order to ensure that your systems are powered down correctly, take the following steps:
- Monitors should be set to sleep after 10 minutes, and CPUs after 20 minutes
- If you are a very large business with an IT manager dedicated to installing software through the network, consider network power management
There are rebates available through SF Energy Watch for network-enabled computer power management.
4. Appliances and Refrigeration
The San Francisco Green Business program recommends replacing refrigerators that are more than 10 years old. When you are ready to purchase a new refrigerator or freezer, be sure to purchase Energy Star certified models. See Energy Star's website to find an Energy Star model from your preferred brand. Also check to make sure that your refrigerator temperature is between 38ºF and 41ºF, and your freezer is between 10ºF and 20ºF. If your refrigerator does not have exact temperature settings, place the dial to the middle temperature setting available.
For commercial refrigerators, as used in restaurants and hotels, rebates are available through SF Energy Watch. Rebate requirements for energy efficient appliances are set by the Consortium for Energy Efficiency. Check here to learn more about efficiency requirements for qualifying products.
The Food Service Technology Center is also a great resource for restaurants to find energy and water efficient appliances and rebates for system upgrades.
There are rebates available for many of the changes discussed above. The San Francisco Department of the Environment in partnership with PG&E provides free energy assessments, reports, technical assistance, and rebates for all commercial customers in San Francisco. An auditor can be referred to your business to assess your energy usage and equipment, and will then present a report detailing recommended changes, anticipated cost savings, and rebate levels. Auditors from SF Energy Watch are educated on the San Francisco Green Business Program and will make recommendations to help ensure the energy checklist is completed. Consider contacting SF Energy Watch first and they will refer you to PG&E's program for additional measures.
6. Additional Resource List