Read a commercial solar feasibility study critically.
Questions that help separate annual energy balance, useful savings and an investment decision.
Discuss your project ↗Check the baseline and boundaries
Look for the site, consumption period, proposed equipment, roof assumptions and data sources. Identify whether the study is a desktop scenario or based on a completed survey. A useful report lists uncertainties and exclusions, including connection changes, roof repairs and any costs that have not yet been quoted.
Compare energy at the right timescale
Annual production and annual demand are useful totals, but they cannot prove direct self-consumption. Review the available load profile and how operating hours overlap with generation. Surplus energy is a physical balance; it should not automatically be assigned a sales revenue without confirming the applicable commercial treatment.
Inspect the financial assumptions
Separate the quoted investment, avoided electricity cost, operating expenses, degradation, equipment replacement and financing assumptions. Simple payback and discounted cash flow answer different questions. Check whether prices include the same taxes and whether a blended bill amount has been mistaken for a fully avoidable energy charge.
Test sensitivity and define the next step
Ask how the outcome changes with lower generation, a different self-consumption share, higher costs or delayed commissioning. These are scenarios, not forecasts. Use the findings to identify the next survey, data collection or quotation needed. A preliminary calculator output should support an engineering discussion, not replace one.
Let’s define the next step.
Share your site, consumption and project schedule.