When you install a solar plant, a new meter is installed in place of an existing meter. This new meter is called bi-directional meter or net meter. Net meter not only measures the electricity you took from the grid but also measures the electricity you gave to the grid or distribution company (DISCOM). Consequently, it calculates the net amount of electricity upon which you are billed. Topic: Solar Net Meter Electricity Bill
In order to calculate your savings from the solar plant effectively, you must know how to read solar net meter electricity bill.
This post will give you a complete guide on everything mentioned in your solar net meter electricity bill.
We will first, explain important parameters mentioned in your solar net metering electricity bill and then, we will explain these parameters in an actual BSES Delhi solar net metering electricity bill. Other companies also have the same parameters mentioned in their bills. So, it will not be difficult for you to read those solar net net meter electricity bills once you go through this post.
Solar Net Metering Electricity Bill
Important parameters mentioned in your solar net metering electricity bill are as follows:
Just like any other electricity bill, solar net metering electricity bill consists of your details such as:
- Contact details, and
- Customer Identification Number (it’s a special number assigned to each customer. In case of BSES bill (shown below), this is given as CA No.)
Electricity Supply Details
This section consists of the details of electricity supply coming to your home, building, office or factory etc. Following details are mentioned in this section of solar net metering electricity bill.
- Sanctioned Load
- Contract Demand
- Maximum Demand
- Power Factor
- Customer Category: Residential / Commercial
- Supply Category: Single Phase / 3 Phase, and
- Supply Type: LT / HT
Then there is due date and period for which electricity bill is generated clearly mentioned on the solar net metering electricity bill.
This section mentions in detail your consumption of units for that particular period along with charges and taxes applied. The important details mentioned are as follows:
Number of Units Consumed
Please note that, the units mentioned in this section are the net units for which you have to pay.
Number of units imported and exported are mentioned in a subsequent section in the BSES solar net metering electricity bill as shown below in the post.
Solar net meter electricity bills of other companies may have different presentation in their electricity bills but please note that, you are always charged for the net units.
Unit rate for electricity is mentioned in this column. You may either have flat rates or slab-wise rates depending on your connection.
Final rates, unit rate of electricity multiplied by number of units, are also mentioned in this section along with all state and central taxes applicable.
Final price for which you have to pay is also mentioned in this section.
Now, to show the benefit of solar plant and how net units have been calculated from imported and exported units, there is separate section called Net Meter Consumption Details. The section is described below.
Net Meter Consumption Details
This section gives you the information about your solar plant. It mentions all the important parameters of your solar plant including the size of your solar plant and the date of installation of your net meter.
The parameters mentioned in this section are discussed below:
Brought Forward Units and Carry Forward Units
Brought forward units are the surplus units from the previous bill period. This happens when your exports are greater than imports in the previous bill period. This means, you have a negative bill in the previous bill period. These extra units are adjusted in the current bill period. So, none of your units are ever wasted.
In case of exported units being equal to imported units, you will be charged only for the compulsory monthly rental.
In the current bill period in case your export is greater than your import, it will carry forward to the next bill period. This is mentioned in the carry forward section of your electricity bill.
These are the number if units imported from the grid.
These are the number of units exported from your solar system to the grid.
Net Reading is the difference between Import Reading and Export Reading. These are the number of units for which you are charged.
In other words, you are charged for only that electricity which you took from the grid after consuming electricity from your own plant. In case, electricity from your plant is sufficient for your use, you will not import any electricity from the grid and you will have to pay only the compulsory monthly rental.
Since, you are charged for only net units, net metering reduces your electricity expenditure considerably. This reduces your number of units consumed. If your DISCOM charges you for slab rates, you’ll always fall into cheaper slabs because of decrease in number of units consumed.
The following picture is a sample of BSES Delhi solar net meter electricity bill as given on BSES website.
BSES Delhi Solar Net Meter Electricity Bill Sample
The electricity bill in the following picture is a DUMMY bill provided on BSES Delhi website for information purposes only. The pdf version of this DUMMY bill is available on solar BSES website.
As you can see, everything is clearly mentioned on the solar net meter electricity bill.
In this example, the customer’s sanctioned load is 30 kW while the size of solar plant installed is 10 kW.
There are no brought forward and carry forward unit in this example. The number of units imported from the grid are 1039 and the number of units exported to the grid are 436.
So, net units are
Net Units = Imported Units – Exported Units
So, the net units are (1039 – 436 = 603) 603. You have to pay for only these 603 units.
You can see that by installing a solar plant, you have saved electricity charges for 436 units that were generated by your own solar plant. Also, you can see that, in this example, there are slab rates that keep on rising with approximately every 200 units. In this example, the consumption falls in three slab prices. Had it been 1039 units, it would have fallen in 5 or 6 slab prices which keeps on increasing with consumption.
Therefore, you save a lot of money installing a solar plant. This is evident from the solar net meter electricity bill.