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Commercial Solar Power

Commercial Solar Feasibility Study

Before commencing any large solar project, the feasibility of the venture must first be established. Feasibility studies are conducted to assess the viability and profitability of a project and are the initial step when developing a commercial solar installation.

Commercial Solar Assessments

SolarWise Wagga’s commercial solar assessments are conducted by our solar PV experts and provide information and advice on:

  •  The viability of PV solar installation for your business.
  •  Optimum solar PV system capacity based on electricity usage profile.
  •  Financial feasibility and analysis.

Our feasibility studies are based on years of experience designing, installing, and maintaining commercial solar PV projects.

Assessment Service - Overview

Level 1 – Initial Viability Assessment.

  • Electricity Bill and Energy Usage Analysis
  • Tariff Options
  • Site survey, Roof and Structural Assessment
  • Initial Shading Analysis
  • Load Reduction
  • System sizing

Level 1 Assessment standard fee: $267

Level 2 – Feasibility Assessment & Financial Analysis.

  • Meter data / load profile acquisition
  • Data Logging, load analysis.
  • Detailed shading analysis where required
  • Optimum solar PV system sizing
  • Finance options
  • Financial assessment & modelling

Level 2 Assessment fee: from $449

Our Viability and Feasibility assessments are free of obligation to purchase a solar PV system from us.
When a Solar PV system installation is purchased from us after the completion of a level 2 assessment, the fee paid for the assessment will be deducted from the quoted system cost.

Solarwise Wagga - Commercial Solar Power - LG-NeON2

20kW System with SolarEdge and LG NeON2

SolarWise Wagga can design and install a solar power system that meets the energy requirements and budget of any business, while providing the best service possible.


Assessment Service - Detailed Description

Level 1 – Initial Viability Assessment.

The purpose of a Level 1 assessment is to determine the general viability of installing a solar PV system on a specific site or business and consists of the following:

Electricity Bill and Energy Usage Analysis

We will conduct a review of the most recent 12 months electricity bills to:
– Determine daily energy requirements
– Identify seasonal variations in energy usage
– Examine site specific tariffs Identify operation times – days of week, hours of day.

Tariff Options
Identify the existing and ideal tariff structure for the business based on the typical energy usage patterns. (Peak / off-peak, Time of Use, Peak demand)

Site survey, Roof and Structural Assessment
Through a site visit and analysis of satellite imagery:

  • A detailed assessment of the roof will be conducted to identify obstacles, roof type and orientations.
  • Identify optimum and appropriate roof areas for the installation of solar PV arrays.
  • Establish locations of solar PV modules with regard to angles, available sunlight, shading and temperature.
  • Determine if any building surveys need to be performed.
  • Recommend appropriate mounting options specific to your site and building type. (i.e. pitched, flush mounted, ground mounted)

Initial Shading Analysis 
Identify areas of possible shading problems.

Load Type and Reduction
Identify possible areas of load reduction (eg; lighting efficiency, power factor correction, heating & cooling efficiency) Identify the types of load connected throughout the site. (ie; lighting. appliances, machinery, heating and cooling)

System sizing
An initial PV system size range recommendation based on information gathered.

Level 2 – Comprehensive Feasibility Assessment and Financial Analysis.

A Level 2 assessment builds upon the outcome and information obtained from a Level 1 assessment.

Site specific information is examined in more detail, and a Financial Feasibility Analysis & Report is completed.
The aim is to identify the most financially profitable outcome for your proposed solar power project.

Level 2 Assessment consists of the following:

Meter data / load profile acquisition
If available, interval data for the most recent 12 months is obtained from digital electricity meters and is used to generate average hourly load profiles for typical weekdays, Saturday and Sunday for each month.
Alternatively, the load profile of the site can be estimated based on discussions with the client and typical times of electrical consumption. A preset load profile similar to your business type and situation can be applied.

Data logging, load analysis
Accurate hourly consumption data is essential to determine the ratio of site-consumed to grid-exported solar electricity. This information forms the basis of a solar installation’s financial case.
Data logging instruments can be installed for a period of time to gather load profile data.

Detailed shading analysis where required
A more detailed analysis is performed for any shading issues identified.

Optimum solar PV system sizing
Detailed modelling is conducted to provide an appropriate and optimum solar PV system size with consideration of:

  • Available roof area, site constraints and local shading lengths/losses
  • Hourly electrical load profile, PV output maximises offset of peak load while minimising export to the grid.
  • Maximising the financial return to the end client
  • Grid connection constraints

Finance options 
Available finance options are presented and discussed in detail.

Financial assessment & modelling
A commercial solar assessment includes a detailed financial assessment, and modelling of the costs and revenues associated with the proposed solar power system projected over its design life.

  • The analysis and assessment includes:
  • Calculated annual solar PV outputs
  • Calculated annual savings
  • Projected annual increases in electricity prices
  • Annual maintenance costs
  • Tax depreciation benefits
  • Renewable energy certificate revenue (STC)
  • A financial projection of the installation over its design life
  • Simple financial payback
  • Internal rate of return
  • Net present value
  • A detailed financial presentation of expenses and incomes over the installation’s design life.

The financial analysis presentation includes a relevant selection from the Infographics, graphs, and charts listed below.

• Annual bill before & after solar
• Cheaper electricity (comparison
• Energy Sources (Solar generated vs Grid import)
• Internal rate of return
• Investment payback over years
• Repayments
• Return on Investment
• Financial Ownership (cash flow positive, etc)
• Annual Breakdown of benefits

• Electricity expenditure before & after solar
• Annual solar savings
• Cumulative revenue
• Annual electricity expenditure
• Projected electricity prices
• Sample day’s energy balance
• Weekly consumption
• Monthly consumption
• Monthly production

Energy balance graph

General Information

Solar PV Output Calculations
The average hourly and daily solar outputs per month can be calculated for a solar PV system.

The solar output is based on:

  • Solar resource data specific to the site and proposed PV orientation
  • Technical data from the solar PV panel and inverter specifications
  • Estimated system losses due to panel temperatures over the year based on the power temperature coefficient and NOCT of the panel, local BoM temperature data and roof type
  • Overall system percentage losses such as DC/AC wiring losses and soiling.

Solar Resource Data

  • Solar resource information is obtained from solar datasets localised to the site under consideration.
  • Solar resource assessments are specific to the roof layout and/or proposed PV panel orientation.
  • The solar data includes average hourly and average daily data for each month in the calendar year.

Additional Services available

○ Power Factor Correction Study
○ Power Quality Study & Recommendations
○ Peak Demand Lopping
○ Battery Storage Feasibility Assessment
○ Backup / Emergency Power Assessment

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“At SolarWise Wagga our philosophy is simple, we aim to provide relevant and reliable information, quality service, and the highest grade of products at a competitive price.”

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