How To Select Solar Panel Size

Compare cost to relative efficiency efficiency is important but the most efficient panels aren t always the best value.

How to select solar panel size.

Total number of solar panels. The size of your solar array your geography and site specific conditions. Small solar panels yet you can also find panels of 150 160 or 175 watts. Not all solar panels are alike.

After reducing energy usage you re ready to size your system. How to determine inverter size. Similar to solar panels the size of an inverter can be rated in watts w. Determine solar panel efficiency and compare to industry average of 16 18.

If you have a small or odd shaped roof solar panel size is an important consideration when deciding on the size of a solar system. Then divide the kw output by your panel s efficiency to get the total number of solar panels for your system. Those solar panels used for residential purposes range from 150 watts to 370 watts per panel depending on the panel size efficiency and cell technology. Take these factors into account.

When it comes to solar inverter sizing installers will take three primary factors into account. How to choose your solar panels in 3 steps. In this example the battery would be. Oversize your solar panels inverters and batteries and you ll waste money.

Observe power draw and calculate amp hour requirements. With a large usable roof area you can buy more larger panels at a lower cost per panel to get to your target energy output. To calculate the size of your solar photovoltaic system take your daily kwh energy requirement and divide by your peak sun hours to get the kw output you need. Check solar panel manufacturer warranties against industry average of 10 25 years.

Choose the right solar panels.