eBiddut

Net billing

Your meter runs both ways.

With net billing, a rooftop solar system is connected to the grid through a bi-directional meter. Surplus power is sold to the grid by day, power is bought back at night, and the monthly bill settles the difference.

Top view of the Uttara Tower roof model with its grid-connected solar arrays
Uttara Tower · grid-connected design
Your buildingkWh⇄Bi-directional meterNational gridEXPORT · DAY SURPLUSIMPORT · NIGHT USE

One meter, two directions

A bi-directional meter keeps two registers: power that leaves the building and power that enters it. The bill is built from both.

  1. 01

    Export by day

    Solar the building doesn’t use flows out to the national grid, and the meter counts every exported kWh.

  2. 02

    Import at night

    After sunset the building draws from the grid as usual, recorded separately on the same meter.

  3. 03

    Settle on the bill

    Each month the utility credits the exported units against the imported ones — a lower bill, and income from the surplus.

A day on the roof, a month on the bill

Solar peaks at midday while most buildings use the most power in the evening. Net billing is what makes that mismatch pay.

A typical day, hour by hour

  • Solar generation
  • Building use
0510152025kW00:0006:0012:0018:0023:00ExportedImported00:00 — Solar 0 kW · Use 6 kW01:00 — Solar 0 kW · Use 5 kW02:00 — Solar 0 kW · Use 5 kW03:00 — Solar 0 kW · Use 5 kW04:00 — Solar 0 kW · Use 5 kW05:00 — Solar 0 kW · Use 6 kW06:00 — Solar 1 kW · Use 8 kW07:00 — Solar 4 kW · Use 10 kW08:00 — Solar 9 kW · Use 10 kW09:00 — Solar 14 kW · Use 9 kW10:00 — Solar 18 kW · Use 9 kW11:00 — Solar 21 kW · Use 10 kW12:00 — Solar 22 kW · Use 10 kW13:00 — Solar 21 kW · Use 10 kW14:00 — Solar 18 kW · Use 9 kW15:00 — Solar 14 kW · Use 9 kW16:00 — Solar 9 kW · Use 10 kW17:00 — Solar 4 kW · Use 12 kW18:00 — Solar 1 kW · Use 15 kW19:00 — Solar 0 kW · Use 18 kW20:00 — Solar 0 kW · Use 18 kW21:00 — Solar 0 kW · Use 16 kW22:00 — Solar 0 kW · Use 12 kW23:00 — Solar 0 kW · Use 8 kW

Illustrative ~30 kWp building. This day: 62 kWh exported, 141 kWh imported.

One month, settled

Solar generated: 3,600 kWhSolar generated3,600 kWhUsed on site: 1,900 kWhUsed on site1,900 kWhExported: 1,700 kWhExported1,700 kWhImported: 2,300 kWhImported2,300 kWhBilled (net): 600 kWhBilled (net)600 kWh

Illustrative month. Billed units = imported − exported = 2,300 − 1,700 = 600 kWh.

Net metering or net billing?

Both connect a rooftop system to the grid through a two-way meter. The difference is how exported power is counted.

AspectNet meteringNet billing
What is creditedUnits: each exported kWh cancels an imported kWhValue: exports are paid at an export rate, imports billed at the tariff
How it is settledIn kWh on the meter readingIn taka on the monthly bill
Surplus over the monthCarried forward as unit creditTurned into a money credit or payout
Best forOwners offsetting their own useSystems built to earn from exports — like eBiddut’s

What eBiddut handles

  1. 01

    Application

    We prepare and file the grid-connection application with your distribution utility.

  2. 02

    Meter & inverter

    A bi-directional meter and a grid-tied inverter are fitted to the utility’s specification.

  3. 03

    Inspection

    The utility inspects and commissions the connection before export begins.

  4. 04

    Monthly settlement

    We reconcile meter readings with the bill and pass the income on, every month.

Common questions

Do I lose power if the grid goes down?

A grid-tied system switches off during an outage so no power flows into lines being repaired. Battery backup can be added where uninterrupted supply is needed.

Is net billing allowed in Bangladesh?

Yes. Grid-connected rooftop systems that export surplus power are covered by the Net Metering Guidelines, 2018, applied by each distribution utility.

Who reads the meter?

The utility reads it for billing as it does today. eBiddut also logs generation and export on its own platform, so both sides can check the figures.

Does net billing change my tariff?

No. Imported power is billed at your existing tariff; only the exported units are added to the account as a credit.

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