Compare the cost of two grow-light setups

To compare two setups, separate electricity use, purchase price and accessories. Use the same schedule and tariff for a meaningful comparison.

Set the same assumptions

Note each model, its setting, the coverage actually achieved and the required accessories. A cheaper setup that does not light the area you need is not an equivalent comparison. Check current prices on product pages rather than reusing an old promotion.

Calculate each scenario

Electricity and setup costs

Repeat the calculation for each power setting. Then add the accessories, support and purchase price using current figures. Do not turn this calculation into a promise about plant performance. The reference guide to energy use includes the formula and caveats; the use-based comparison helps you select suitable formats.

Editorial review: 3 October 2026 · TerraLED. Set up your equipment according to its instructions and the needs of the species.