It is virtually impossible to measure this, because it is constricted by time, season, locational load growth, extreme weather (including specific locations), and many other factors.
Here is some information to give you an idea of how this must be calculated, and why it is so difficult:
Transmission losses are also known as I^2 * R losses, because the losses are due to the inherent resistivity of power lines. Power "lost" in the transmission system = I^2 * R for each particular line. Power line resistivity is effected by how balanced the loading is (this is assumed to be perfectely balanced in many locations), the configuration of the three phases to each other, the type of conductor, transposition vs. non transposition, and the list continues, so each individual line in the power system must be taken into account. The other factor is the actual amount of current that is flowing, which is dependent on the amount of load at a particular time (which is not constant throughout the day).
Now, say one part of the country experiences severe weather, damaging several major power lines. When this occurs, local utilties often rely on neighboring utilities to provide power. This power may have to travel through more lines, incurring more transmission losses, than it typically would.
What if several lines are out of service due to work (reconductoring, replacing insulators, retentioning the line,...). This will cause different transmission losses for the power that would "typically" flow through these lines.
I live in a farming area, where lots of power is used for irrigation. If the season is unusually rainy, farmers will irrigate less, which allows the local utilities to sell power to other utilities outside our typical service area, which results in different transmission losses than normal.
If a power plant is added or removed, this impacts where power is flowing from, thus reduces / increases transmission losses to specific loads.
You can start to see the complexity involved in your question. I have never seen a number quoted for this, since it would be at best an order of magnitude estimate, and at worst (say, calculated during an "abnormal" year) completely worthless, even though the amount of data necessary to calculate this, and the inherent added costs (adding high precision meters literally everywhere, collecting the data, and calculating losses), would be extreme.
Power is basically voltage times current. The power lines have resistance and that causes a loss of some power in transmitting the power over long lines. When the power is sent at a higher voltage, the current is lower, which means that the power lost in the wires is less. A rule of thumb for power transmission is to use 1000 volt per kilometre so for a 33 km line you would use 33 kV.
Power lines run at high voltages to overcome line loss.
Power factor is the percentage of actual useful energy obtained from an electrical device as opposed to the wasted energy lost to impedience of a circuit. ie heat, voltage drop. Improvement is to raise this percentage to as close to 100% as possible.
how much energy is lost in converting dc energy to ac energy
Power lines and electronic equipment: 150m
Increase the voltage in the lines.
Energy is lost in hydroelectric power generation through factors such as friction in turbines, resistance in transmission lines, and inefficiencies in the conversion of kinetic energy into electrical energy. These losses reduce the overall efficiency of hydroelectric power plants.
Electrical energy. The whole purpose of power lines is to transfer energy from one place to another, in the form of an electrical current.
Energy is lost during the generation, transmission, and distribution of electricity from power stations to homes in the form of heat due to resistance in power lines and transformers. This energy loss is known as transmission and distribution loss, and it occurs as electricity travels long distances over power lines. Transformers are also used to step up or step down voltage, which can result in additional energy loss.
Some heat is lost in the vapour that rises from the power plant.
Energy is lost during electricity transmission mainly in the form of heat due to resistance in the wires. This phenomenon is known as transmission loss. The longer the distance the electricity travels, the more energy is lost. Upgrading infrastructure and using high-voltage transmission lines can help reduce these losses.
Energy is wasted in the National Grid through transmission losses, which occur as electricity travels long distances over power lines and some energy is lost as heat. Inefficiencies in power generation, distribution, and consumption also contribute to energy wastage in the grid. Additionally, standby power from appliances and devices on standby mode can result in energy being wasted.
Energy may be lost in a power station turbine due to friction between moving parts, air resistance, and inefficiencies in the conversion process from thermal energy to mechanical energy. This loss of energy results in a decrease in the turbine's efficiency and overall power output.
Power lines are used to transport or transmit electrical energy from the electrical generator to the customers. Power lines are important for they help factories, commercial buildings and residences have electrical energy.
Power lines carry electricity from power plants to homes and businesses. The electricity is generated at the power plant and then sent through the power lines to reach different locations where it is needed, providing energy to power various devices and appliances.
Energy is wasted in a coal power plant through various processes such as friction in the turbines, heat loss in the power transmission lines, inefficient combustion of coal, and energy lost in cooling towers during the condensation of steam. This waste leads to lower overall efficiency and increased environmental impact due to higher greenhouse gas emissions.
i dont know i asked!