How to Calculate the Right Inverter Size and Price for Your Home

It is important to opt for the right size when purchasing a solar-powered system for your home. Not picking the right size can prevent the system from performing properly. You need to obtain proper knowledge about the power needs of your abode. After that, you can move further in getting an inverter that accommodates the batteries and panels. This blog offers insights into the home inverter price, why size is necessary, and much more. 

How to Calculate the Size and Price of an Inverter?

When you have decided to get an inverter for your home, you must calculate the inverter price and size properly. That way, you can get the right one for your residence. Here are the steps that you must observe:

Step 1: List the Appliances That You Want to Use

You should begin by deciding on the appliances you want the inverter to support. Try not to include every appliance present in the house. Go for only the essential ones, such as television, Wi-Fi routers, laptop chargers, and even the refrigerator. Make sure to write down every appliance and how many units you plan on utilising. You need to be honest here. Overestimating can increase the inverter cost and size. 

Step 2: Inspect the Power Rating for Every Appliance

Every electrical device has its own set of power ratings that get measured in watts. You can find this information on the backside of the appliance or in the user manual. When you cannot find the exact value, you can use the standard estimates, such as the following: 

• Ceiling fans typically consume between 70 and 90 watts.

• LED bulbs consume between 9 and 12 watts.

• TVs consume between 100 and 200 watts. 

• Refrigerators might consume between 150 and 300 watts. 

Before you calculate the cost and size of the inverter, be sure to pen down the wattage for every device properly. 

Step 3: Calculate the Overall Load in Watts

Now, you have to add the wattage of all the appliances that you want the inverter to run. This can provide you with the total load that the inverter can handle at one time. To have a clear understanding of this, here is a small illustration:

• 3 fans at 80 watts each is 240 watts.

• 4 LED lights at 10 watts each are 40 watts.

• 1 television at 150 watts is 150 watts.

So, the overall load will be: 240 + 40 + 150 = 430 watts. This particular number is the footing of the inverter calculation. 

Step 4: Convert the Watts into VA

Inverters are said to be rated in volt-ampere or VA and not in watts. When you want to convert the watts into VA, you have to consider the power factor. For the majority of the residences, the power factor is roughly 0.8. So, to convert watts to VA, you should use the following formula:

VA = overall watts divided by 0.8. 

To understand this well, here is a small example:

VA = 430 (total watts) / 0.8 = 537.5 VA

Make sure to use this formula when you want to convert watts to VA. 

Step 5: Pick the Correct Battery Capacity

The battery capacity is measured in Ah or ampere-hours. When it comes to checking the battery capacity, you should use the following formula: 

Battery Ah = (Backup hours multiplied by overall load in watts) divided by battery voltage

The majority of the batteries are said to be of 12 volts. You can do the calculation based on that. Here is a small example:

430 watts x 3 hours: 1,290 watt-hours 

1290 / 12 = 107.5 ampere-hours

Here, a good 120 Ah battery for an inverter might be a great option.

It is critical to inspect the inverter’s size and also its price range. That way, you can get an inverter that fits well with your residence. Begin by reviewing the energy requirements, add up the device loads and then prefer the size that comes with added capability. Make sure that the inverter you opt for has smart features along with top-tier battery support. Do not forget about the backup power and future requirements. 

When looking for a good inverter shop near me that can help you save funds, safeguard the appliances and assure good solar energy at home, choose products from Microtek. The company is well-known for its top-notch solar products, which include inverters along with many compatible accessories. Its inverters are created for the Indian climate and the voltage variations. They provide good efficiency, safety features, long life and even smart charging. With proper service assistance and warranty, Microtek’s solar-powered inverters stand out as ideal and reliable options. 

FAQs

Q1. How to know the everyday energy use of a house?

To know the daily energy use, you must inspect the last electricity bill and then divide the monthly units by 30 to gain the daily average. 

Q2. Why go for MPPT inverters?

The MPPT inverters provide a lot more solar energy from the panels, particularly in changing daylight.

Q3. Is it possible for a bigger inverter to damage the solar system?

Having a slightly larger inverter is safer. However, opting for an oversized one can cost a lot more. 

Q4. Do homeowners need a hybrid inverter?

Yes. When you need battery backup and grid support along with solar power, getting a hybrid inverter for your home is a great choice. 

Q5. Does the inverter price include installation cost?

No. The installation cost is typically an additional option. You should request the total project price when purchasing the inverter.