Net metering allows you to send extra solar electricity to the grid and take it back later when you need it.
What Is an On-Grid Solar System?
An on-grid solar system is connected to both your building and the government electricity grid.
During the day, your solar panels generate electricity and your home, shop, or factory uses this power first.
When solar power is not available (night or cloudy weather), electricity automatically comes from the grid.
This system works without batteries, making it affordable and low-maintenance.
What Is Net Metering?
Net metering uses a bidirectional meter (a two-way meter) that records:
- Electricity taken from the grid (Import)
- Electricity sent to the grid (Export)
At the end of the billing cycle, your electricity bill is calculated as:
How Net Metering Works – Step by Step
Daytime (High Sunlight)
- Solar panels generate electricity
- Your building uses solar power first
- Extra electricity is sent to the grid
- Your meter runs in reverse and gives you credits
Night or Low Sunlight
- Solar panels stop producing electricity
- Power is taken from the grid
- Previously earned credits are adjusted automatically
Simple Net Metering Example
| Month | Solar Generated | Electricity Used | Result |
|---|---|---|---|
| Month 1 | 120 units | 100 units | 20 units exported |
| Month 2 | 120 units | 100 units | 20 units exported |
| Month 3 | 120 units | 150 units | 30 units imported |
Total generation = 360 units
Total consumption = 350 units
Net export = 10 units
Net Metering Rules in Exolar Service States
Yearly Settlement (April–March)
- Delhi
- Uttar Pradesh
- Haryana
- Uttrakhand
Extra units are carried forward till 31st March and adjusted at year-end.
What Is APPC Rate?
APPC (Average Power Purchase Cost) is the rate at which DISCOM values your extra exported solar units.
It usually ranges between ₹2.7 to ₹4 per unit, depending on the state.
These units are adjusted in your bill or against fixed charges during settlement.
Net Metering vs Gross Metering
| Feature | Net Metering | Gross Metering |
|---|---|---|
| Solar Usage | Self + Grid | Grid only |
| Bill Benefit | High savings | Limited |
| Best for | Homes & Businesses | Institutions |
Why Exolar Energy Recommends Net Metering
- Maximum electricity bill reduction
- Faster return on investment
- State-wise compliant system design
- End-to-end DISCOM coordination
Net metering is the backbone of rooftop solar savings. With Exolar Energy, your system is designed
according to your state policy, usage pattern, and long-term safety – not shortcuts.
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