This is a little more complicated than it looks, because there are many technologies, and many levels of efficiency.
Carbon footprints are rated according to the total greenhouse gas cost during the lifetime of the object. Different greenhouse gasses have different effects, so the solar footprint has to be rated on a basis that is uniform. The basis is carbon dioxide, or CO2. Also, the benefit has to be standardized, and it is easy to understand power delivery in terms of kilowatt hours. Carbon footprints can be conveniently rated in grams CO2 equivalentper kilowatt hour (g CO2e/kWh).
Most efficient, and the lowest carbon footprint of just about any technology, is solar thermal. It seems to have a carbon footprint of 5 to 10 g CO2e/kWh.
Newer solar photovoltaic (PV) technologies are rated between 23.6 and about 40 g CO2e/kWh.
Concentrated solar thermal, which is especially interesting because the energy is stored as heat to be converted into hot water later, is rated as about 40 to 45 g CO2e/kWh.
Old PVs are rated at about 105 g CO2e/kWh.
By way of comparison, hydro and wind are rated at about 12 to 20 g CO2e/kWh. Nuclear is rated at about 65 to 180 g CO2e/kWh. Combined cycle natural gas is 455 g
CO2e/kWh. Oil is about 900 g CO2e/kWh, and coal 1000 g CO2e/kWh.
No, it is not, not at first. But the first three months of use usually compensates for for the production emissions. In calculating the carbon footprint, the carbon costs of manufacture, transportation, and installation all have to be included, as do the costs of uninstallation and disposal at the end of the life cycle of the apparatus. The carbon footprint of solar power is small. Solar thermal power, such as is used in solar hot water, can have a smaller carbon footprint than wind or hydro, because the manufacturing cost (in terms of carbon emissions) of solar thermal can be kept to a minimum. Solar photovoltaics (PVs) have a larger carbon footprint than wind or hydro, though modern PVs have a carbon footprint that is not much bigger, perhaps twice as big. This is because a lot of energy is used in manufacture. Older PVs had a much larger carbon footprint because they were less efficient (produced less power) and manufacture required gasses like nitrogen trifluoride (NFl3), which is about 17000 times as powerful as CO2 as a greenhouse gas. The NFl3 was trapped, but tiny amounts of it escaped, and these had to be accounted for. The operation of solar power can be carbon neutral, but this does not consider the total carbon footprint as it should be - "cradle to grave," as they say.
Your carbon footprint measures the amount of carbon dioxide that you and your lifestyle are responsible for. Riding a bicycle keeps your carbon footprint low. Driving a big car raises your carbon footprint. Using solar panels means that some or all of your electricity is being renewably generated, that is, without greenhouse gas emissions. This is good for your carbon footprint and good for the world!
we reduce our carbon footprint and we don't use fossil fuels to create the energy instead
There are many advantages to using solar energy instead of electrical energy. Some include saving money on your electric bill, increasing your homes value, and decreasing your carbon footprint.
Answer 1yes as long as the plant doesn't melt down Answer 2No, its carbon footprint is significantly higher than that of solar, wind, hydro, geothermal, or biomass. Please see the question, "What is the carbon footprint of nuclear energy?" A link to this is below.Answer 3No but its a whole lot better than coal.
Carbon Footprint - A measure of the amount of carbon dioxide emitted through fossil fuel combustion. A carbon footprint is often expressed as tons of carbon emitted on an annual basis. See Environmental Footprint.
There is no better way to reduce the carbon footprint of your vehicle than with a solar hybrid car. These vehicles harness the power of the sun to recharge the on-board batteries. This also lowers the carbon footprint of the vehicle. Installing one of these supplemental charging systems allow the vehicle to operate in electric mode for extended periods of time which increases fuel mileage and saves money on gas.
Solar power produces no carbon dioxide
Solar power produces no carbon dioxide
A firm's carbon footprint is an indication of the firm's environmental impact. The carbon footprint measures the firm's impact on global warming.
The advantage of having a solar roof is to reduce your carbon footprint on the environment by reducing your dependence on power plants. Another advantage is some governments actually offer a financial incentive to people who have invested in a solar panels on their roof.