- Electric ramp equipment does not idle
- Electronic eyes can turn belts on when required and off when not required
- Place pad lighting switches on timers and allow staff to operate lights based on task requirements
- Add light sensors to ensure the lights turn off at dawn
- Motion sensors can turn off lights when no people are present
- Door and window maintenance can prevent energy loss
- Motion sensors can engage escalators when passengers approach
There are technological solutions available to reduce idle energy consumption and most of them are cost effective and simple to implement. Investment into these technologies provides annuity stream savings over the life of the equipment they regulate. In addition to the financial benefits, every watt of power saved could potentially reduce carbon emissions by 20 pounds per year.
Easy Step No. 4:
While this step may require higher initial investment than the previous suggested steps, it may generate greater benefit to the environment and is becoming more cost-effective over time. Renewable energy sources available to airports are typically limited to wind, solar and in some cases wave power. All of these energy sources are less cost effective than fossil fuels, but their higher cost may be offset by grants, incentives and the availability of “carbon credits” that can generate a financial return to the operator.
The vast expanse of open space required to operate an airport may lend itself to solar energy generation. A good example of this is the FedEx cargo facility at Oakland Airport. In 2005 FedEx installed 5,769 solar modules on the roof of its sort facility. This photovoltaic array can produce 904 Kilowatts, or 80 percent of the facility’s peak power requirement. That is the equivalent of saving about 1 ton of carbon dioxide emissions per hour if the same amount of electricity was produced by a coal-burning power plant.
Wind power may also represent a viable solution for renewable energy generation at airports. A new generation of wind turbines offers benefits that may be unique to airports. One class of new wind turbines are smaller units integrated into the architecture of the building they are mounted on. They are more efficient and less intrusive than the huge turbines that are used at wind farms around the world. Additionally, their modern, sleek design may fit well with the modern architecture of many new airport structures. With these smaller turbines, it may be possible to add wind power to nearly any building, thereby capturing and harnessing the phenomenon that makes flight possible…wind.
To offset the increased cost of renewable energy, there are grants and tax breaks available to businesses that choose to implement these programs. In addition, there is a new trend to sell carbon credits to consumers who wish to reduce their carbon footprint. Virgin Atlantic has announced a program to offer their passengers the opportunity to offset the emissions of a flight by purchasing the equivalent in carbon credits.
Easy Step No. 5: Electric GSE
Converting ramp equipment from internal combustion to electric can save energy in many areas. Electric power is a more efficient use of energy than an internal combustion engine. Internal combustion engines only capture about 30 to 40 percent of the heat energy of their respective fuels and transform that into mechanical energy. Add to that the time they spend idle and that efficiency drops to 18 to 25 percent. That means that for every dollar spent on fuel, 75 cents to 82 cents is wasted as heat or idle energy.
An electric motor operating in a piece of GSE is about 92 percent efficient. Total system efficiency, which includes the addition of a battery and fast charge system, still results in approximately 65 percent total efficiency. That means that 65 cents of your electric dollar is being used to perform the work it was intended to do.
To ascertain the true cost to the environment, the efficiency of the power transmission lines and the generation station also need to be considered. The bottom-line efficiency of an electric vehicle is about 45 to 50 percent. If a power plant polluted the same amount as an internal combustion engine per watt, it’s still only half of the emissions of an internal combustion engine equivalent once you factor in efficiency.