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Solarflow Shower

Dina John

Problem Statement

Electric showers fulfil daily hygiene needs but generate significant water and energy demand, and peak‑time use places pressure on the energy grid. This undermines decarbonisation targets  and creates a key sustainability challenge for everyday use.

Hand drawn annotated exploratory drawing of the idea showing DC feed from Solar PC, combination of electric heating with Solar PV battery, push on and off controls, rechargeable batteries and a green light when charged plus an energy tracker.

My Process & Design Intervention

Secondary research into showering practices highlighted long‑shower norms, high water use and peak‑time energy demand as key sustainability pressures. CCW’s 4‑minute shower campaign demonstrates the potential of behaviour‑change interventions. These insights informed five initial concepts

• Products (Dual Flow, Moduu) reduce demand and extend lifecycles.

• Systems (EcoLoop, Solarflow) decentralise supply and reuse.

• Services (SMARTie) monitor and reinforce behaviour.

Mapped onto the Innovation Landscape Matrix to evaluate and select the strongest direction.

An innovation landscape matrix showing potential ideas mapped agaist product, service and system level innovation and material things, people and context.

Selection and Design

Solarflow shower selected as the only concept that eliminates grid demand, delivering a fully decentralised, low‑carbon system. External solar PV provides a DC feed to charge integrated batteries, powering a compact heating unit. Transparent panels and LED indicators show energy status, while smart connectivity links showering to home energy systems. It advances SDG 7, cuts emissions and operates as a closed‑loop solution. Feasibility validated by industry schematics.

Digital realisation showing a Solar PV panel mounted on a roof directly feeding to the Solarflow unit which is connected to the shower.

Dina John, Business Analyst in Change Management. Post‑graduation aim: develop my design portfolio and volunteer to gain experience.

About me

Instagram: Dinas_39

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