Commercial greenhouse crop under cover
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Supplemental lighting

See how much sunlight your greenhouse gets each month, how much light your crop still needs, and a budget for the LED toplights to make up the difference.

Lighting estimator

Budget estimate only. Results use long-term average sunlight and standard layout assumptions; we confirm the final design and price after reviewing your project.

Location & crop

US only. Used for monthly sunlight.

Greenhouse

Covering
This is for

Lights

Light size
Power supply

Understanding the results

The chart shows daily light outside and inside your greenhouse for each month, with your crop's target as a dashed line. Where the inside bars fall below the line, supplemental lights make up the difference.

The layout shows rows of lights running the length of each house, the way they hang from light bars on our structures. You can change the number of rows and lights per row; the estimate tells you whether the layout still meets your crop's target.

Budget estimate only. Installation, electrical work, controls, freight and taxes are not included. Our team reviews mounting height, uniformity and your electrical service before any formal quote.

Frequently asked questions

Is the online lighting estimate the final price?
No. It is a budget estimate for planning. It uses long-term average sunlight for your ZIP code and standard assumptions about light spread and mounting. We confirm the final lighting design, fixture count and price after reviewing your greenhouse, crop schedule and electrical service.
What is DLI and why does it matter?
Daily light integral (DLI) is the total amount of light a crop receives in a day, measured in mol/m²/day. Each crop has a target. In darker months, sunlight through the greenhouse covering often falls short of that target, and supplemental lights make up the difference.
Why does the estimate design for the darkest month?
Sizing for the month with the least sunlight means the lights can meet your crop target all year. If you only grow in certain months, choose a different month under "More options".
What does the estimate include?
LED toplights and, for new Conley's greenhouses, the light bar hangers that mount them to the structure. It does not include installation, electrical work (circuits, panels, wiring), controls or dimming, freight or taxes.
Can I add lights to a greenhouse I already have?
Yes. Choose "A greenhouse I already have". The estimate covers the lights; mounting hardware depends on your structure and is quoted separately.
Which locations are supported?
US ZIP codes. Sunlight data comes from NASA's long-term climate records. If we do not have your exact ZIP, we use a nearby one in the same area and tell you.

Request a quote

Use Add to quote list or Get a quote for this lighting on the estimator above. Combine with heaters, ventilation or benches from the bar at the top of the site when you are ready.

Request a quote

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