Porque pagamos tarifa DAC?
DAC o tarifa doméstica de alto consumo, es una multa que cobra la CFE por exceder un límite de consumo en KWh (kilowatt-hora) en su hogar.
Esta tarifa perjudica únicamente a clientes de uso doméstico derivando en cobros que aumentan a más del doble de sus pagos normales cuando el usuario pasa de los límites establecidos por CFE ya que sale de una tarifa subsidiada para entrar a la tarifa con multa (DAC).
RECIBO ANTES DE DAC:
(KWH=KILOWATT-HORA)
Pero una vez que empieza a regir la tarifa DAC el pago aumenta:

¿También le sorprendió el cobro de CFE en su recibo?
- Descubra por que llegó al DAC
La CFE determina mediante una fórmula muy complicada en que momento entra en la tarifa DAC: (http://app.cfe.gob.mx/aplicaciones/ccfe/tarifas/tarifas/tarifas.asp?Tarifa=dac2003&anio=2012&mes=4&imprime=)
Lo más importante entre otros factores es su consumo promedio móvil (¿Qué significa esto? Respuesta: su consumo excedió 3000 kwh en los últimos 6 recibos o bimestres), vea lo que sucedió:

Se observa que el consumo móvil (la suma de los últimos 6 bimestres) asciende a 3,239 kwh, y en este momento se empieza a pagar la tarifa DAC, que es tarifa única y no recibe subsidio alguno. A partir del primer kwh consumido se paga multa DAC.
- ¿Hay solución para salir de la tarifa DAC?
Sí, pero primero tiene que considerar lo siguiente para no perder su tiempo, dinero y esfuerzo y al final frustrarse por no llegar a nada:
1.-La tarifa DAC esta autorizada por el congreso y por lo tanto es 100% legal.
2.-Reclamar a C.F.E. es inútil
3.-Reclamar a PROFECO es inútil.
4.-Solicitar a C.F.E. revisión del consumo en el hogar, es inútil.
5.-Intentar economizar el consumo no prendiendo focos o la TV tampoco es de gran ayuda, siendo una solución a largo plazo porque los kwh que llega a ahorrar son insuficientes para salir de la tarifa DAC.
- ¿cómo llegó mi recibo a la tarifa DAC?
Porque la casa consumió más de 500 kilowatts-hora por bimestre durante más de 6 meses en promedio en tarifa 1. La C.F.E. no da aviso por lo que para muchos usuarios este consumo se produce sin que se den cuenta porque la C.F.E. no lo cobra en el recibo del bimestre en que sucede, sino que hasta pasados 12 meses se refleja en el cobro. Para entonces, ya el servicio a ese hogar está en la categoría dac y así se seguirá cobrando hasta que el usuario tome alguna medida para reducir el gasto energético o compensarlo con energía solar.
- ¿Cómo evito que me cobren tarifa DAC?
Eficientizar al máximo los consumidores actuales de su hogar. Esto significa cambiar aparatos viejos por modernos que ahorran energía, y mantener durante un largo tiempo un consumo bajo para reducir el promedio anual que le daría entrada a la tarifa subsidiada. Si aún con todo el posible ahorro que podría tener con cambio de aparatos superara el consumo de promedio anual, la única solución sería un sistema de interconexión a C.F.E.
El sistema fotovoltaico interconectado a la C.F.E. genera electricidad y alimenta los consumidores dentro de la casa, evitando así requerir los kwh de C.F.E.
Crystalline Silicon (c‐Si)
C‐Si cells were first commercialized by Bell Labs in the 1950s, and are traditionally manufactured by slicing high‐ grade (>99.99 percent purity) silicon into thin wafers, roughly as thick as several human hairs. Mono‐crystalline silicon solar cells offer higher efficiencies but are more difficult to manufacture. Poly‐crystalline silicon cells have generally lower efficiencies but are cheaper and easier to manufacture.
• Thin‐Film
Thin‐film solar cells are the main focus of many leading‐edge PV manufacturers and researchers. These cells are manufactured by applying very thin layers of semiconductor material to inexpensive materials such as glass, plastic or metal. Thin‐film semiconductors absorb light more easily than c‐Si, so they require less semiconductor material but tend to be less efficient at energy conversion. They are also much simpler and less costly to manufacture. Examples include cadmium telluride (CdTe) and copper‐indium‐gallium‐diselenide (CIGS).
• Multi‐junction
Also called cascade or tandem cells, multi‐junction solar cells are the highest‐efficiency solar cells currently available.
These cells work by combining two or more types of semiconductor material with staggered band‐ gaps, allowing each to capture a different range of the solar spectrum. The result is a cell with much higher efficiency than any single‐material PV cell. These types of cells are expensive to manufacture, and are used when weight and efficiency are at a premium, such as satellites, high‐performance solar‐powered vehicles, in military applications, and for concentrating PV (CPV).
What Are the Benefits?
Volatile energy prices have fueled interest in alternatives such as solar energy. Solar power can help alleviate capacity problems on local utility systems, especially during peak electricity demand periods. It also reduces greenhouse gas emissions by decreasing the use of electricity generated by fossil-fueled power plants.
Why is Solar Energy Right For You?Common reasons for Going Solar:
Lower or eliminate your electric bill: Power prices long-term outlook for energy prices show a steady increase.
Increased Home Value: If the time comes to sell your home, you'll be selling a home with little or no electric bill-- a powerful selling point.
Safe Investment: Have your investments taken a hit lately? In addition to increased home value, Residential Solar can produce small, but certain long-term returns.
t;p>Reduce Your Footprint: An average residential solar electric system reduces C02 emissions by 89,429 lbs. per year; the equivalent of planting 130 trees every year.
Average System Cost
The cost of a typical system can be broken down into 2 areas: components and installation. In the solar industry, this cost is tracked by dollars per watt.
Range of Cost: Residential Grid-Tie systems can start as low as $2000 (installed) for a starter system, all the way to $50,000 or more.
Average Component Cost: $4 per watt. This includes all the components including panels, inverters, mountings and electrical accessories.
Average Installation Cost: $2.00 per watt. This usually includes the physical installation of the system and connection to the grid.
Example: A 4 kW system is 4000 watts. So the components will cost $16,000 before rebates, and the installation will cost $8,000.
Types of SystemsA residential PV power system enables a homeowner to generate and offset their daily electrical energy demand, exchanging daytime excess power production for future energy needs (i.e. nighttime usage). The house remains connected to the electric utility at all times, so any power required above what the solar system can produce is simply drawn from the utility. These systems can also include battery backup, or un-interruptible power supply (UPS) capability to operate selected circuits in the residence for hours or days during a utility outage.
System Types and Mounting Options
- Ground or Roof Mounted Solar Panels
- Solar Patios and Canopies
- Adhered Solar Laminates for Metal Roof Panels
- "Grid-tied" residential solar power systems connect directly into your electric company's power grid. During the day, your solar power system is generating electricity that is directed onto the main grid, sort of like a small power station.
- Then at night, you simply draw whatever power you need right back off the grid. The electricity you generated (or saved) during the day for others to use will be paid back to you in the evenings when lighting and other electrical loads are needed.
- If your system is of sufficient size and produces more power during the day than you use in the evenings, you may actually end up with a surplus of electricity. In this case, many electric companies offer a program which is commonly known as "net metering" wherein, if your system produces more than you use, you will be paid a pre-determined amount of money for each kilowatt hour your system produces. Yes! You could actually get a check from your power company




