Custom Energy Rate Calculator App Built with Make and Grist

Stromeus energy sales agents were calculating tariff options manually during client consultations — a slow, error-prone process that left customers waiting. Metawork built a custom Tarifrechner (rate calculator) application where agents input customer usage data and instantly see the best tariff options with accurate pricing, enabling faster onboarding and significantly fewer quoting errors.

Challenges

Sales agents needed a fast way to calculate tariff options during consultations

Manual calculation was slow and error-prone

Customers waited too long during consultations

Goals

Build custom rate calculator application

Enable agents to input customer usage data instantly

Show best tariff options with accurate pricing immediately

Results

Sales agents generate accurate quotes in seconds

Quoting errors significantly reduced

Faster customer onboarding to energy contracts

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