Project Feasibility - Solar Rooftop Excel Financial Model
Originally published: 21/07/2020 08:53
Last version published: 07/03/2022 09:06
Publication number: ELQ-50941-5
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Project Feasibility - Solar Rooftop Excel Financial Model

Solar Rooftop FM is a Project Finance Model for construction and operations of a Solar Roof Top project.

Fin-wiser’s Solar Rooftop FM helps user to assess the financial viability of a solar rooftop project by capturing all the essential inputs related to construction, operation, and financing.

The Model includes assumptions related to:

1. Development cost, Construction costs and Developer’s Fee
2. Plant Capacity, Capacity Factor & Annual Yield, Irradiation Factor, Degradation Factor, Production Seasonality,
3. PPA Term, Feed in Tariff (FiT) , Merchant Price and Other revenue source
4. Roof Rental Cost, Variable O&M cost per tonne (divided into 5 sub heads such as staff, electricity, consumables, transport and fuel and other fixed costs (SPV, insurance, land lease, community payment, management fee & more)
5. Flexible Funding Profile – Cash equity, Bridge Loan, Bank Debt, DSRA and Bank overdraft
6. Working Capital Assumptions related to accounts receivables and payables
7. Straight Line and Accelerated Depreciation option
8. Annuity and Even Principal Repayment options
9. Inflation and Indexation
10. VAT during construction and operations phase
11. Decommissioning cost and reserve, if required

Model Output includes:

1. Project IRR & NPV
2. Equity IRR & NPV
3. Minimum and Average DSCR
4. LLCR and PLCR
5. Levelized Cost of Energy (LCOE)
6. Equity Payback Period
7. Cash Waterfall
8. Debt Service Profile
9. Integrated Financial Statements
10. Fully Integrated Dashboard
11. Exit Analysis

Model Package includes:
1. Excel based financial model (Excel binary format i.e. xlsb)

2. Macro Word Document – This includes the VBA Code used in the model for user’s reference

Why Fin-wiser’ Financial Model Template:

1. Our model is built on quarterly timeline which provides more detailed data for Analysis
2. The model is divided into two phases i.e. Construction and Operations
3. All revenue and cost assumptions can be input into 3 scenarios. This helps user to assess the impact of multiple business scenarios in one model. This can be operated simply on a click of a button.
4. The Debt funding drawdown has 3 scenarios which can help user to assess the impact on the IRR and make best possible negotiations with the financial institutions.
5. The debt repayment has been profiled with 2 scenarios i.e. Annuity payment and Even Principal Payment repayment. You can change the scenario on a click of a button and assess the impact on IRR.
6. The model is built with Financial Modeling Best Practice and have clearly defined input, calculations, output cells and tabs to help even a rookie excel user to operate the model efficiently.
7. Our Models are thoroughly reviewed and Quality checked for Arithmetic and Logical flow

Technical Specifications:

1. Model uses Macros (VBA) especially to consider the interest during the construction phase in the Uses of Funds Table. To run model optimally, keep macros enabled. In case you do not like Macros, you could manually disable or remove the Macros and will have to rework the model’s logic to be used without Macros but it is not recommended by the author.

2. Model is built using Microsoft Excel 2019 version for Windows. Please note, on certain Mac laptops or MS Excel prior to 2007, Excel with Macros can slow down your computer if your PC does not have enough processing power.

3. We advise not to delete or insert rows and columns into the model if you are not aware of the model structure as it can distort model functioning. If you need assistance with customizing the model template, the author is more than willing to help you. Simply contact us on our channel here: and send your model template as well as specifications. We will then get back to you with a quotation for the customization service (billable hours & completion date).

4. Model uses Cell Styles

This Best Practice includes
1 Excel file and 1 Word Doc

Acquire business license for $149.00

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Further information

The objective of the model is to understand the business viability of constructing and operating a Solar Rooftop Project

User can use this model to:

1. Understand the business viability of solar rooftop project
2. Understand Revenue and Cost drivers of solar rooftop project
3. Understand Funding calculations and Covenants

The objective of the model is to understand the business viability of solar rooftop project and is not applicable on any other sector.

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