Stadtwerk
Product design · DACH · 2025

Stadtwerk

A public-sector energy portal for 190,000 households, designed to WCAG 2.2 AA from week one and certified externally at launch without a remediation phase.

Client
Stadtwerk
Market
Germany
Engagement
Product design
Fee
€26,800
Duration
10 weeks
Shipped
July 2025
01

The problem

The municipal utility served 190,000 households through a portal that failed an accessibility audit on 71 criteria. Under the European Accessibility Act that is not a backlog item, it is a procurement problem.

The previous supplier had quoted a remediation phase. Remediation is what you pay for when accessibility was not a design input, and it costs roughly three times as much.

02

The decision

We designed to AA from the first sketch and wrote the conformance note on the same page as the screen. Contrast, focus order, target size and error identification were review criteria every Friday, not a phase.

We also cut the address-change wizard down from nine steps to three, which turned out to fix more accessibility complaints than any contrast change did.

DiscoveryAccessibilityInterface designDesign systemEAA documentation
03

What changed on screen

01 · Meter reading
Meter reading — the most-used screen in the product, keyboard-complete and readable at 200% zoom.
02 · Tariff comparison
Tariff comparison — a data table that is a data table, so a screen reader can navigate it.
03 · Address change
Address change — nine steps down to three; the wizard was the accessibility problem.
04 · Conformance notes
Conformance notes — AA criteria recorded per screen — the document that goes into a tender.
04

Result

External audit at launch; journey metrics measured 90 days post-launch
AA
WCAG 2.2
Certified by an external auditor at launch.
71→0
Audit failures
No remediation phase was needed.
9→3
Steps to change address
The most-complained-about journey.
190,000
Households served
Across the utility's full service area.
“Nobody has ever handed us the accessibility documentation with the design before. Procurement asked where we found them.”
Digital lead, Stadtwerk · Nordrhein-Westfalen
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