Use the current rules and your signed agreement
NEPRA’s legal register lists the Prosumer Regulations 2026 and subsequent amendments, including an August 2026 amendment. A calculation copied from an older net-metering article can therefore describe a different arrangement from the one applicable to your connection.
Before relying on a rate or payback claim, identify your agreement date, approval/connection status, billing method and the current provisions that apply. This guide does not conclude that every existing and new connection has identical terms.
Ask the provider to identify the rule and rate applicable to your agreement. The ordinary residential calculator on this site does not calculate solar export settlement.
Keep three energy flows separate
Self-consumption means solar energy used on the premises. Import is energy drawn from the grid; export is energy sent to the grid. The meter and bill determine how these quantities are recorded and settled. Do not count the same generated unit as both self-consumed energy and export income.
An energy example, without promising an export payment
Imagine a system produces 400 kWh in a period. If the home directly uses 250 kWh and 150 kWh is exported, those two quantities account for the 400 kWh generated. If the home also imports 200 kWh, total energy used in the home is 450 kWh in this simplified example.
| Quantity | Illustrative kWh |
|---|---|
| Solar generation | 400 |
| Used directly in the home | 250 |
| Exported to the grid | 150 |
| Imported from the grid | 200 |
| Home consumption in this example | 450 |
The rupee bill cannot be calculated from these five numbers alone. Applicable import prices, export treatment, fixed charges, taxes and adjustments still matter. Netting energy and billing energy at separate rates produce different outcomes.
Ask for these items before accepting a proposal
- Which agreement and current regulation will apply to this connection?
- What import and export treatment is assumed, and where is its official source?
- How much output is assumed to be self-consumed rather than exported?
- Which fixed charges, taxes, maintenance and replacement costs are excluded?
- What happens to the estimate if generation, use or applicable prices change?
Keep the assumptions with any savings estimate. A single best-case payback number does not show how the result changes if daytime use is lower or the settlement terms differ.
When the solar bill does not match expectations
Compare the import/export readings and billing period with the agreement and the provider’s statement. Ask which rate and adjustment was applied to each quantity. Preserve approval documents and any case references when seeking a correction.
Use the provider’s authorised connection and metering process; electrical installation and protection must be handled by qualified people under the applicable requirements. This page is a billing guide, not wiring or interconnection instructions.
Questions you may have
Does exported electricity mean there is no monthly bill?
Not necessarily. Import charges and other applicable lines can remain, and settlement depends on the agreement.
Can the normal electricity calculator show my solar payback?
No. It does not model generation, self-consumption, export settlement or installation costs.
Sources & scope
The sources below explain the service or rule discussed on this page. Use your provider’s records for an individual account.
- NEPRA: current legal registerLists Prosumer Regulations 2026 and amendments, including S.R.O. 1330(I)/2026 dated 6 August 2026. Consult the full applicable texts.
- Official connection portalCheck provider-supported application services; solar approvals may require additional official procedures.