Choosing a marketing agency for a solar or renewable energy company
What to ask a marketing agency before hiring them for a solar or renewable energy company, and why understanding subsidy schemes and payback math matters.
4 min read
A savings calculator is often the most-used tool on a solar website, and also the easiest place to accidentally overpromise. A calculator that shows an impressively large saving based on hidden, optimistic assumptions creates a trust problem the moment a buyer's actual bill does not match.
Designing for honest, usable output
- Show the tariff rate and generation assumptions used, not just a final saving figure.
- Allow the buyer to adjust their actual monthly bill amount, since this varies widely.
- State clearly that the result is an estimate, with a note on what could change it (roof shading, orientation, DISCOM approval timeline).
Simplicity versus accuracy
A calculator with too many technical inputs (tilt angle, exact panel model) will lose casual visitors before they get a result. A simpler version with two or three inputs, followed by an invitation to book a survey for an exact figure, balances usability against precision better.
A calculator that overpromises gets remembered the moment a buyer's real bill does not match — underpromising slightly protects trust better.
Mobile performance
Test the calculator specifically on mobile, since many buyers check it while looking at their phone's electricity bill app or a photo of a paper bill — a calculator that is awkward to use on a small screen loses this exact use case.
The takeaway
Clearly label every assumption in your calculator (tariff rate, sun-hours, degradation) — an unlabelled assumption that turns out wrong damages trust badly once a buyer checks it against their own bill.
Written by Fibvo — Bengaluru and Erode, India — working with clients in other time zones. Questions, or think we have it wrong? Tell us.
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