Bill of Materials (BoM)
The page allows you to review added components, add additional items, define pricing for each material, and control how costs, taxes, and margins are applied at both item and project levels.
Purpose of This Page
This page serves as the final cost and material definition stage of the project. It ensures that:
All required technical components are included
Each item is priced correctly using appropriate units
Financial rules such as discounts, margins, and VAT are applied consistently
The proposal and return on investment calculations reflect the true project cost structure
All changes made here are auto-saved and immediately reflected in totals, proposals, and financial outputs.
What You Can Do Here
On this page, you can:
Review automatically added the core equipment from the design
Add additional materials and cost items manually or apply predefined presets
Select pricing types such as Quantity, Per Watt, Set, or other unit-based options for each material
Customize each material's visibility and financial behavior through Detailed Settings in the proposal
Configure discount, margin, and VAT settings for the entire Bill of Materials
Change currency instantly
Download the Bill of Materials
Automatically Added Materials
When you open this page, solarVis automatically adds the main equipment based on the project design and configuration:
Solar panels
Inverters
Batteries (if applicable)
Heat pumps (if applicable)
These materials are linked to previous design steps. Their quantities and system-related values are calculated automatically and updated when the design changes.
Only the Unit Price can be changed for these items; all other values come from the project design.
Expanding the Material List
Presets
Presets are a predefined list of materials for a project, created by users to speed up project setup. Selecting a preset automatically adds all materials included in that preset.
Typical preset use cases include:
Residential solar energy projects
Commercial systems by capacity range
Standard installation packages
A shortcut link below the preset selector allows you to manage and update presets.
Manual Material Addition
By clicking Add New Material, you can manually add individual items to the Bill of Materials.
Common material categories include:
Project Cost
Labor Cost
Shipping Cost
Unexpected Cost
Mounting
SCADA
EV Charging Station
Duplex Meter
Electrical Panel
Custom items
Each added material can be fully customized in terms of pricing, visibility, and financial behavior.
Rows with missing required fields are highlighted until completed and changes are not saved if any missing data exists.
Pricing Types
Each material can be priced using a specific Pricing Type, which defines how its total cost is calculated.
Available pricing types include:
Quantity - fixed price multiplied by item count
Per Watt - calculated using project DC power
Per Panel
Per Meter - commonly used for cabling
Per Kilogram - commonly used for mounting
Set - single fixed amount
Percentage - calculated as a percentage of the project subtotal cost
Per Watt-Hour (Battery) - based on battery capacity
The selected pricing type determines how the system calculates the subtotal.
Examples:
Per Watt multiplies the unit price by the total DC power
Per Panel multiplies the unit price by panel count
Set applies a fixed price once
Percentage applies a percentage to the project subtotal cost
All subtotals update automatically when project values change.
Currency Selection
The currency selector in the top-right corner allows instant switching between EUR, USD, and other currencies.
When the currency is changed, all unit prices, subtotals, and totals are recalculated automatically without losing data.
You can change your account’s default currency in the Company section of the Settings page. When updated, the new default currency will be applied across your account’s currency settings going forward.
Browse Materials
Browse Materials opens the full solarVis material database, allowing you to search and select predefined products.
If you can’t find the materials you need, you can use the Request Material button on the All Materials page.
Download Bill of Materials (BoM)
Download Bill of Materials exports the complete Bill of Materials in Excel format for external use or sharing.
Detailed Settings (Three-Dot Menu)
Each material has a dedicated settings panel accessed via the three-dot menu on the right side of the row.
All these settings apply only to the selected material.
This popup screen is divided into two main sections:
Proposal Settings
Controls how the material appears in the customer proposal.
You can:
Add or edit the description shown for this material in the proposal
Toggle to show or hide the material
Toggle to show or hide unit price
Toggle to show or hide brand and model number
Toggle to show or hide material-level discount
These settings affect only the proposal output, not calculations.
Proposal settings are linked to each other. For example, to display the custom discount for a material in the proposal, you must select both “Show this material in the proposal”, “Show unit price of this material in the proposal”, and “Show discount of this material in the proposal.”
Financial Settings
Financial settings define how the material impacts cost calculations and feasibility results.
Include in Return on Investment
Determines whether this material affects return on investment and payback calculations.
If disabled, the material remains on the Bill of Materials page and in the proposal, but is excluded from financial metrics, such as return on investment and payback progress.
Advanced item-level overrides include:
Custom Discount
Applies a discount only to this material, overriding the project-wide discount.
Custom Profit Margin
Sets a specific margin for this item instead of the global margin.
Custom VAT Rate
Defines a unique VAT rate for specific materials or incentive materials, useful in markets where different items are taxed differently.
The custom VAT applied to this material will be included in the total VAT calculation.
These values override project-wide settings for that specific material.
The Total Amount shown at the bottom of the modal reflects all applied rules for that material.
Project-Level Financial Settings and Calculated Totals
At the bottom of the Bill of Materials page, you can configure financial settings that apply across the entire project.
You can adjust:
Discount: Project-wide discount applied to all materials
Profit Margin: Margin added on top of material costs
VAT Rate: Tax applied to the final amount
You can also choose whether VAT and discounts are visible in the proposal.
As these values are edited, solarVis automatically recalculates all totals in real time:
Subtotal
Discount amount
Profit margin amount
Total excluding VAT
VAT
Final total
These project-level financial settings directly shape the proposal output and all feasibility calculations.
Annual Maintenance Cost
The Annual Maintenance Cost field allows you to define recurring yearly operational costs for the project.
This value represents expenses such as:
Routine system inspections
Cleaning and minor servicing
Ongoing operational support
When an annual maintenance cost is entered, the value is included in the two different parts of the proposal:
The Payback Period of the solar system is recalculated
Cumulative Cash Flow calculations are updated
This ensures long-term financial results reflect both upfront investment and ongoing operational costs.
Related Pages
For more assistance, don’t hesitate to get in touch.
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