Electricity Prices and Regulation (On-Grid / Zero Injection Projects)

It defines how electricity is priced and regulated for on-grid & zero injection projects, including electricity tariffs, export and compensation rules, VAT, inflation and market-specific settings.

Purpose of This Tab

The Electricity Prices and Regulation page controls how electricity consumption and solar production are converted into money. It determines how electricity purchased from the grid, self-consumption, electricity exported to the grid, and compensation are calculated.

All financial outputs, such as savings, cash flow, and payback period, depend directly on the parameters defined here.

SolarVis automatically selects the most appropriate regulation based on the project’s location and facility type. Users can review the assigned regulation or change it and adjust tariff and financial parameters when required.

What You Can Do Here

In this tab, you can:

• Review or change the automatically selected Tariff

• Apply a separate tariff for the period after the solar system is installed

• Configure electricity purchase, electricity export, and offset prices

• Adjust VAT and multi-year inflation assumptions

• Select the calculation currency

• Retrieve up-to-date electricity prices for supported regions

• Sync pricing settings across all design versions in the project

• Save all changes using the Save Changes button

How It Works

1. The system loads the regulation based on the project configuration.

2. Tariff parameters populate the Tariff Details section.

3. Energy simulation results are combined with:

   • Purchase price

   • Export price

   • Compensation mechanism

   • VAT

   • Inflation assumptions

4. Any updates made here instantly recalculate all financial outputs after clicking Save Changes.

Regulation Selection

The Select Regulation field defines the market rules applied to the project. SolarVis determines the applicable regulation automatically using:

• Project location

• Facility type (residential, commercial, industrial, etc.)

• Grid connection type (On-Grid or Zero Injection)

All financial outputs in the project depend on this selection.

You can manually change the regulation if needed. When a regulation is selected, its tariff structure loads automatically into the Tariff Details panel.

Global Regulation is the default (fallback) tariff applied when no active tariff exists for the project’s location and facility type.

It requires manual configuration of all tariff components and parameters, giving users full control over pricing logic, compensation rules, and financial assumptions.

It functions like creating a fully custom tariff from scratch, allowing complete flexibility to define the structure according to specific market or contractual needs.

Editing or Creating Regulations

At the bottom of the dropdown, a helper link is provided:

“To activate, edit, or create new tariffs, visit the tariff settings page.”

This link redirects to the Tariffs management page, where users can:

• Create new tariffs

• Modify existing tariff structures

• Activate or deactivate tariffs

Only active regulations appear in this dropdown. Changes made in the Tariff Settings page become available here after activation.

Separate Pre-Solar and Post-Solar Tariffs

By default, one tariff describes the whole project: the customer's current bill and the bill after installation are calculated with the same rates. In some markets, that is not what happens. After solar installation, the customer moves to a different tariff, often one with export compensation or a different rate structure.

Enable Use separate pre-solar and post-solar tariffs to model both:

• Pre-solar tariff

  The tariff the customer is on today. It sets the baseline bill the savings are measured against.

• Post-solar tariff

  The tariff that applies once the system is running. It drives the new bill, the export compensation, and every financial result derived from them.

When the option is enabled, the two tariffs appear as separate tabs. Each one is selected and edited exactly like a single tariff, so you can pick a different regulation for each and adjust its rates independently.

Export settings and solar compensation belong to the post-solar tariff, since they only apply once the system is generating. The pre-solar tariff is used for the baseline bill only.

When the design uses separate tariffs, the customer proposal shows both of them on the savings and benefits page, so the customer can see exactly which tariff each side of the comparison is based on.

Get Latest Electricity Prices

For supported regulations, users can click Get Latest Electricity Prices to automatically retrieve updated tariff data.

This ensures:

• More accurate financial projections

• Alignment with current market prices

• Reduced manual data entry

Sync Current Changes to All Designs

Applies the current tariff and regulation settings to all designs within the project, ensuring consistent financial calculations across every design scenario.

Tariff Details

This section contains all editable financial inputs linked to the selected regulation.

All modifications must be confirmed using the Save Changes button. Updates made here apply only to the current project.

Rate Details

Defines where the tariff can be used.

• Set Name, Currency, Description

The Countries and Facility Types options are locked here because they were defined when the project was created.

Solar Compensation

Defines how exported solar energy is handled.

• Net Metering

• Net Billing

• Net Billing (Carryover)

Credit-based models activate:

• Apply Solar Credits

• True-up settings

Export Settings

Choose how energy exports are valued:

• Retail Rate

• Reduced Retail

• Fixed Rate

Directly affects energy export revenue and savings.

It is only visible for Net Billing models

Rates

Fixed Charges → recurring, non-energy costs

Minimum Bill → Enforced minimum payment

Rate Periods & Tiers → Tiered or period pricing

TOU Schedule → Hourly/Monthly peak/off-peak mapping

Demand Charges → kW-based peak-demand or average-demand billing structure

Financial Parameters

• VAT Rate → Applied to electricity charges

• Inflation Rates → Escalates utility prices over time

Impacts long-term savings, payback, and return on investment.

Where to Configure Full Tariff Structure

The Tariff Details section in this document includes only the key parameters required for project-level financial configuration. For detailed tariff structure setup, please refer to the Tariff Settings page.

The Tariff Settings page is where tariff frameworks are created, structured, and maintained at the system level.

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Related Pages

• Project Details Page

• Energy Consumption Page

• Tariff Settings Page

Want to learn more? Get in touch with our team.