Set of renewable energy line icons on white background

A clean grid of four black line icons sits on a white background, each paired with a label underneath. The symbols represent a hydrogen fuel cell, tide turbine, biomass plant, and smart grid. Simple strokes and plenty of negative space give the design a technical, instructional feel that works well for sustainability, engineering, and energy-transition content. The monochrome palette keeps attention on the icon shapes rather than decoration, making the image useful for presentations, infographics, and website graphics. Each illustration is isolated and evenly spaced, creating a balanced composition with strong clarity at small sizes. The labels add context without cluttering the layout, and the overall look feels modern, minimal, and easy to read.