Shade Analysis and Deployment Plan

The shade analysis reports are showing the architectural impact on levels of natural photosynthetically active radiation across the playing field of actual Stadium.

The main purpose of the calculated data in the study is determine the need for supplementary lighting to the main turfgrass on playing field throughout the season.

Accurate analysis helps with an optimal and efficient way of managing your fleet of artificial lighting units, using them in a precise manner while saving on energy consumption.

Grading Shadow in February

Grading Shadow in June

Turfgrass species and cultivars vary in their tolerance of shade and light requirements. In this case in UK where cool season grasses are in use it will be appropriate to focus on cool-season grasses light needs.

Taking recent universities researches, the optimum, summer DLI light requirements for cool-season grasses are about 23 Mol/m²/d, where the minimum, winter DLI are about 14 Mol/m²/d – these values take into account stadium environmental conditions and pitch traffic usage.

The light requirements are less in winter due to the cooler temperatures and the decreased photosynthetic rate of the cool-season grasses. The DLI required to maintain acceptable turf quality also changes with mowing height, with low mown turf requiring a higher DLI (Glenn, 2015).

Assuming an artificial light source delivers an average of 300μmol/s/m² – in a completely shaded place, to reach the daily dose of 23Mol/d/m², it is necessary to radiate for 21 hours a day. It is recommended to not exceed the period of artificial irradiation for more than 24 hours a day without at least 6 hours dark break.

Our software bases its estimated measurements on specified geographic location with irradiance values based on a 10-year history for the selected location with exact latitude and longitude on the Earth along with the altitude/elevation above sea level. The results are presented as mean daily values on a monthly basis.

Each single grid represents average satellite measurement with an accuracy of one meter. PSG software takes satellite PPFD measurements and shows average result, converted to averaged monthly DLI.

Grading shade on the playing field is converted to grids specified with the size to the light footprint of specific single light unit – in the case shown here it is our TLS72 model which can provides average PPFD around 300μmol/m²*s when units are spread every 18 meters – 3 rows by 6 (18grids/zones).


Position 1

Deployment plan position 1 February utilising 9 TLS 72 Lighting rigs covering the areas with the lowest natural DLI zones ( an area of 4 320 square meters in one deployment )

Position 2

Position 2 Rigs in sones 10 and 11 moved to cover zones 15 and 18

Position 3

Position 3 Rigs in zones 1, 2, 4 and 5 moved to cover zones 13, 14, 16, and 17


LED or HPS Grow Lights

Any rig can be fitted with LED lights, HPS lights, or a combination of the two. The rigs come in any size starting from two lights till 80 lights per units.

LED or HPS Grow Lights ?