> For the complete documentation index, see [llms.txt](https://docs.solarvis.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.solarvis.co/project-design/create-a-project/consumption/electricity-prices-and-regulation-on-grid-zero-injection-projects.md).

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

## Purpose of This Tab <a href="#purpose-of-this-tab" id="purpose-of-this-tab"></a>

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 <a href="#what-you-can-do-here" id="what-you-can-do-here"></a>

In this tab, you can:

* Review or change the automatically selected Tariff
* 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 <a href="#how-it-works" id="how-it-works"></a>

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 <a href="#regulation-selection" id="regulation-selection"></a>

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)

{% hint style="info" %}
All financial outputs in the project depend on this selection.
{% endhint %}

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

{% hint style="info" %}
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.
> {% endhint %}

### Editing or Creating Regulations <a href="#editing-or-creating-regulations" id="editing-or-creating-regulations"></a>

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.

## Get Latest Electricity Prices <a href="#get-latest-electricity-prices" id="get-latest-electricity-prices"></a>

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

{% hint style="info" %}
This ensures:

* More accurate financial projections
* Alignment with current market prices
* Reduced manual data entry
  {% endhint %}

## Sync Current Changes to All Designs <a href="#sync-current-changes-to-all-designs" id="sync-current-changes-to-all-designs"></a>

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

## Tariff Details <a href="#tariff-details" id="tariff-details"></a>

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 <a href="#rate-details" id="rate-details"></a>

Defines where the tariff can be used.

* Set **Name, Currency, Description**

{% hint style="info" %}
The **Countries and Facility Types** options are locked here because they were defined when the project was created.
{% endhint %}

#### Solar Compensation <a href="#solar-compensation" id="solar-compensation"></a>

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 <a href="#export-settings" id="export-settings"></a>

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 <a href="#rates" id="rates"></a>

**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 <a href="#financial-parameters" id="financial-parameters"></a>

* **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 <a href="#where-to-configure-full-tariff-structure" id="where-to-configure-full-tariff-structure"></a>

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](/configuration/settings-page/project-settings/tariff-settings.md) page.

The [Tariff Settings](/configuration/settings-page/project-settings/tariff-settings.md) page is where tariff frameworks are created, structured, and maintained at the system level.

***

## Related Pages <a href="#related-pages" id="related-pages"></a>

* [Project Details Page](/project-design/create-a-project/project-details.md)
* [Energy Consumption Page](/project-design/create-a-project/consumption/energy-consumption.md)
* [Tariff Settings Page](/configuration/settings-page/project-settings/tariff-settings.md)

Want to learn more? [Get in touch](https://www.solarvis.co/en/company/contact) with our team.


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