Your result
Click Calculate
Enter your values, then click Calculate result.How this calculator helps
Estimate export credit and remaining bill after imported and exported units. The calculation keeps important tariff, equipment and usage assumptions visible so visitors can replace defaults with their own bill, datasheet or measured values.
How to use it
- 1
Copy current values from a bill, equipment label, datasheet or measurement.
- 2
Enter realistic operating hours, rates and system losses rather than best-case marketing figures.
- 3
Use the result for comparison and obtain qualified electrical design where safety or installation is involved.
Formula and methodology
Net energy amount = imported units × import rate − exported units × export rate.
Uses editable energy demand, sunlight, equipment and loss assumptions. It is a planning model rather than a site survey or electrical design.
Worked calculation example
Compare 500 imported units with 250 exported units using verified rates.
How to interpret your result
Estimate export credit and remaining bill after imported and exported units. Read the main result together with the supporting values rather than treating one number as a guarantee. The disclosed method is: Net energy amount = imported units × import rate − exported units × export rate.
Input guide
Copy current values from a bill, equipment label, datasheet or measurement.
Enter realistic operating hours, rates and system losses rather than best-case marketing figures.
Use the result for comparison and obtain qualified electrical design where safety or installation is involved.
Scenario comparison
| Scenario | What it demonstrates |
|---|---|
| Worked baseline | Compare 500 imported units with 250 exported units using verified rates. |
| Tariffs and adjustments check | Provider rates, taxes, fuel adjustments and export rules can change by billing period. |
| Real operating conditions stress test | Temperature, dust, voltage, cycling, shade and user behaviour change energy results. |
Common mistakes to avoid
- Ignoring tariffs and adjustments: Provider rates, taxes, fuel adjustments and export rules can change by billing period.
- Overlooking real operating conditions: Temperature, dust, voltage, cycling, shade and user behaviour change energy results.
- Failing to test safety and compatibility: Surge, cable protection, equipment limits and installation standards need professional checking.
Check the result against equipment datasheets, a site survey and a written design from a qualified solar professional.
What can affect the result?
Tariffs and adjustments
Provider rates, taxes, fuel adjustments and export rules can change by billing period.
Real operating conditions
Temperature, dust, voltage, cycling, shade and user behaviour change energy results.
Safety and compatibility
Surge, cable protection, equipment limits and installation standards need professional checking.
Limits of this estimate
This planning estimate cannot reproduce every provider bill, inspect a site, certify wiring or equipment, predict weather, or replace a qualified electrical or solar design.
Sources and review information
Frequently asked questions
Is the solar export credit free?＋
Yes. SolvePilot tools are free, work in your browser, and require no account.
Does SolvePilot store my values?＋
No. Calculations run locally in your browser and the values you enter are not sent to a server.
Should I treat the result as an exact bill or quotation?＋
No. Results are informed estimates. Final charges can vary because of taxes, tariffs, lender terms, usage patterns, or provider rules.
How can I improve the accuracy?＋
Use recent values from your own bill, statement or institution, review every assumption, and confirm important results with the relevant official source.
Is this an official bill or engineering design?＋
No. It is a planning estimate. Confirm tariffs with the provider and safety-critical equipment, wiring and protection with a qualified professional.