Monday, 21 September 2015

Panel cost vs. value – other factors

As not all module manufacturers  solar water heater price in Chennai are equal, there are a variety of other factors that should influence your purchase solar water heaters in Chennai decision rather than focusing  solely on cost.


Tolerance
This is the range a panel will either exceed or not meet its rated power. For example, a solar module you purchase  solar water heater price in Chennai may have a ‘nameplate’ wattage of 200 watts; but due to quality control issues, may in reality only be 195 watts. A positive tolerance rating means the module solar water heaters in Chennai  will not only generate 200 watts, but perhaps more under standard testing conditions.


Temperature co-efficient
The temperature co-efficient rating is solar water heater price in Chennai  important to determine what the impact heat has on a solar panel’s operation after installation. The lower the percentage per degree Celsius, the better. The  solar water heaters in Chennai  price of a module with low temperature co-efficiency can be a little more; but in Australia’s often hot  solar water heater price in Chennai conditions, a little extra cost will be worth it.


Conversion efficiency
The efficiency of how a solar panel solar water heater price in Chennai  converts light into electrical energy will determine how much power your system generates. If two solar panels cost the same, but one has a higher  solar water heaters in Chennai  conversion efficiency; then that module provides the better value for money – assuming the claimed solar water heater price in Chennai  efficiencies are correct.

PID resistance
PID stands for potential-induced  solar water heater price in Chennai degradation. Caused by  stray currents triggered by certain climate conditions; the  solar water heaters in Chennai  phenomenon can cause substantial power loss. Good solar panels will display little or no PID.


LID resistance
LID stands for Light induced solar water heater price in Chennai degradation; a process that occurs in the first few months after solar panels are installed.  solar water heaters in Chennai  While this stabilises after a period, it can reduce the amount of power the module produces. A good solar panel will have little or no LID.


Embodied energy
Another important aspect to look at is the embodied energy of the solar panel – that is how energy intensive the production  solar water heaters in Chennai  of the panel was and how quickly it will solar water heater price in Chennai  have paid itself back by producing more energy. Consider this aspect an environmental cost.

Durability / Longevity / Warranty
The durability or longevity of a solar panel warranty is important for a number of reasons – it can be an indicator of the  solar water heaters in Chennai  manufacturer’s confidence solar water heater price in Chennai in its products. Reputable solar panels will have a performance warranty a period of  solar water heaters in Chennai  25 years. All of our key modules; REC Solar, Daqo and Yingli Solar feature this 25 year warranty period.


However, an important point to remember about warranty is that it will only be honoured for as long as the company operates. It’s another  solar water heaters in Chennai  reason to select a well solar water heater price in Chennai  known brand of module rather than purchase an obscure low-cost brand that may disappear solar water heaters in Chennai  overnight. As you most likely won’t be able to buy solar panels directly from the manufacturer, your selection of installer and retailer is also important. It’s best to choose an installation company  solar water heaters in Chennai  that is a service agent for solar panel warranty work for the particular manufacturer you select so if you do strike a problem, the turnaround time solar water heaters in Chennai  to a resolution will be far faster.


Size and Watts
The size of the solar panel in Watts will  solar water heaters in Chennai  directly affect the cost, as solar panels are usually priced (and compared) in dollars per Watt.  Watts are related to the output of  solar water heaters in Chennai  each module; meaning a 100 solar water heater price in Chennai  Watt panel installed under ideal conditions will generate 100 watt-hours of electricity each solar water heaters in Chennai  hour and a 200 Watt panel will generate 200 watt-hours each hour. Therefore expect to pay up to double the price for the 200 Watt panel, compared to the purchase cost of a 100 Watt module.

The output of a panel also affects the solar water heaters in Chennai  physical size of the panel, meaning the 200 watt panel will be larger in size to the 100 Watt module. The type of solar cells used in its solar water heaters in Chennai  production also determines solar water heater price in Chennai  the size of the solar panel. They key issue to consider is that your system sizing is enough solar water heaters in Chennai  to power your appliances, and that the solar panels will physically fit in the area you wish to install them.



Your northerly facing roof space  solar water heaters in Chennai  (and increasingly, west) is very valuable solar power real estate, so you’ll need to consider carefully your future plans. If you believe at some stage you will wish to install more solar panels, you need to ensure you’ll have solar water heaters in Chennai  the space to do so, otherwise you may solar water heater price in Chennai  find you’ll need to replace existing modules well before the end of their serviceable life.

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