Bold style. A precise set of icons extracted verbatim from the Enerflow section of the provided image. Render a grid of clean vector icons, each icon depicting an energy-flow concept: power source, battery, transformer, circuit, arrows indicating flow, solar panel, wind turbine, hydro symbol, grid, plug, lightning bolt, gauge, efficiency symbol. Preserve exact shapes, strokes, fills, and alignments from the original. White or light neutral background, high-contrast bold linework with uniform stroke width. No shading, gradients, or textures. Icons spaced evenly in a balanced composition, centered on the canvas. No text or logos; focus on exact iconography and cohesive visual rhythm.

The image shows a set of black and white energy icons on a white background. The icons depict various types of energy sources, such as wind turbines, solar panels, and other renewable energy sources.