Part of a series in renewal energy technologies
brought by M/s Paavi Solar
Friends, we are continuing to learn Rooftop Solar PV
System components. As you are aware that there are three types of Rooftop
Solar PV System i.e.
1. Off-Grid Solar Rooftop PV system
2. On-Grid Solar Rooftop PV System
3. Hybrid Solar Rooftop PV System
Out of these, systems at S.N.2 and S.N.3 are primarily
installed for lowering the electricity bills and we have already learned it in
my previous blog.
Now today, we will learn about Net Metering and Net
meter. Net metering is a billing mechanism whereby net credit of electricity
added(Export) to the Grid by the Solar PV Generator is given. Suppose a Solar
PV resident is generating more energy than required in the day time, extra energy
is added into the Grid and this energy is metered in Net Meter and reflects as Exported
and the Net Metering bill will have an Export Reading column. During the night or sometimes
in daytime also, when a customer uses Grid
Electricity, then the incoming Grid electricity is also metered and reflects as
import and Net Metering bill will have an Import Reading Column. On the basis of
electricity consumed, a net credit is given to the customer if exported electricity
units are more than the imported electricity units. Similarly, if the electricity
consumed(imported) from the Grid is more than exported electricity, than the
customer has to pay for the net electricity consumed. Hence Net Meter is a bi-directional
metering device (approved and supplied by DISCOMs as per policies) for
calculating the difference of outgoing and incoming electricity units. It may
be added here that while providing Net Meter, DISCOM will test your
installation for Grid Compatibility and Synchronization (already stated in one
of my previous blogs). Meter reading is shown in BSES Delhi Net Metering bill
is classified into three categories of Normal, Peak, and off-peak and then the
difference is moderated for billing purposes.
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G P
BOSE
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