Solar Panel Value And Cost Comparison

We can see the differences in things. As not all module manufacturers are equal and there are a variety of other factors that should influence your purchase decision rather than focusing solely on cost.

Tolerance

Here demonstrated is the reach a panel will either exceed or not meet its rated power. For instance, a solar module you purchase may have a ‘nameplate’ wattage of 200 watts; but due to quality control issues, the output in excellent conditions may in reality only be 195 watts. A favorable tolerance rating means the module will not only generate 200 watts but perhaps more under standard testing requirements.

Conversion Efficiency

The performance of how a solar panel 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 conversion performance; then that module provides the better value for money, assuming the claimed efficiencies are correct.

PID Resistance

PID means potential-induced degradation. Caused by stray currents triggered by certain climate situations; the phenomenon can cause substantial energy loss. Right solar panels will display little or no PID.

LID Resistance

LID means Light-induced degradation; a method that occurs in the first few months after solar panels are installed. While this stabilizes after a period, it can decrease the amount of power the module produces. A right solar panel will have little or no LID.

Energy

Another essential aspect to look at is the embodied energy of the solar panel, that is how power intensive the production of the group was and how quickly it will have settled itself back by producing more energy. Consider this aspect of an environmental cost.

Durability

The stability or longevity of a solar panel warranty is necessary for some reasons, and it can be an indicator of the manufacturer’s confidence in its products. Reputable solar panels will have a special warranty 25 years. All of our key modules; including REC Solar, feature this 25 year guarantee period.

However, an essential point to remember about the warranty is that it will only be honored for as long as the company operates. It’s another reason to select a well-known brand of the module rather than obtain an obscure low-cost brand that may disappear overnight.

As you most likely won’t be able to buy solar panels direct from the manufacturer, your selection of installer and retailer is also essential. It’s best to choose an installation company that is a service agent for solar panel to guarantee work for the particular manufacturer you select. This is due to the idea that if you do strike a problem, the turnaround time to a resolution will be far faster.

Size Capacity

The capability of the solar panel in Watts will directly affect the cost, as solar panels are usually priced (and related) in dollars per Watt.  Watts are associated with the output of each module; meaning a 100 Watt panel installed and operating under ideal circumstances will generate 100 watt-hours of electricity each hour and a 200 Watt panel will generate 200 watt-hours each hour. Accordingly, expect to pay up to double the cost for the 200 Watt panel, compared to the purchase cost of a 100 Watt module.

The output of a panel also changes the physical size of the panel, meaning the 200-watt panel will be larger to the 100 Watt module. The type of solar cells used in its composition also determines the size of the solar panel. The key issue to think about is that your system sizing is enough to power your appliances and that the solar panels will physically fit in the area you wish to install them.

Your north facing roof space (and increasingly, west) is precious solar power real estate, so you’ll need to consider your future plans carefully. If you believe at any stage you will wish to install more solar panels; you need to ensure you’ll have the space to do so, otherwise, you may find you’ll want to replace existing modules well before the end of their serviceable life.

Want to save and be guided by experts who do the research and know the answers? Go to HahaSmart.com and try our price checker tool. How much solar power you need and how much you can save on your energy bills each month.