Sample Solar Street Lighting Report
EVIEKO – Sample Solar Street Lighting Report
Sample project – illustrative
This is an example of the lighting report EVIEKO prepares in its free lighting design service. The site below is fictional and was calculated with EVIEKO's photometric planner engine (point-by-point calculation from the luminaire's IES photometric data). Your report is calculated for your own site, target values and fixtures.
Prepared by EVIEKO GROUP, Melbourne · info@evieko.com · Pre-design guide – final design confirmed in EVIEKO's lighting design and quotation.
1. Site inputs
| Project | Sample project – two-lane access road (illustrative) |
|---|---|
| Area type | Road / street, straight section |
| Length | 200 m |
| Carriageway width | 7.0 m (two lanes) |
| Footpaths | 1.5 m each side |
| Pole arrangement | Single side (near kerb) |
| Mounting height | 6 m |
| Head overhang into road | 0.5 m |
| Lighting target (road) | Average ≥ 15 lx, uniformity U0 (Emin/Eavg) ≥ 0.30 |
| Maintenance factor | 0.8 |
2. Selected luminaire
| Model | EVIEKO Bifacial Solar Street Light 40 W – LiFePO4 (EV-SL-108) · product page |
|---|---|
| LED power | 40 W |
| Luminous flux used in calculation | 6,824 lm (planning value) |
| Light distribution | From the luminaire family's IES photometric file (type C), street-side oriented |
| Battery | 288 Wh LiFePO4 (integrated) |
| Solar panel | 60 W bifacial (integrated) |
3. Calculated layout and results
| Widest spacing that meets both targets | 24.0 m (≈ 4.0 × mounting height) |
|---|---|
| Number of lights for 200 m | 10 (single side) |
| Total LED load | 10 × 40 W = 400 W |
| Road – average illuminance Eavg | 15.1 lx · target ≥ 15 lx · Meets target |
| Road – minimum illuminance Emin | 5.8 lx |
| Road – maximum illuminance Emax | 28.8 lx |
| Road – overall uniformity U0 (Emin/Eavg) | 0.39 · target ≥ 0.30 · Meets target |
| Road – Emin/Emax | 0.20 |
| Footpaths – average / minimum | 12.2 lx / 3.4 lx (no footpath target set – shown for information) |
Results are for the calculation field between two poles at the maximum spacing of 24.0 m (worst case). On site, 10 poles set out evenly over 200 m are at 22.2 m centres, which gives slightly higher levels: Eavg 16.3 lx, Emin 6.3 lx, U0 0.39.
4. Road simulated diagram (plan view)
0–22–44–66–88–1010–1515–2020–2525–30≥30 lx
False-colour isolux plan of two pole spacings. White circles: poles on the near kerb; amber marks: luminaire heads (0.5 m overhang). Dashed line: lane centre line. Each band shows the horizontal illuminance on the ground.
Calculation grid – horizontal illuminance (lx) between two poles
| y \ x (m) | 0 | 3 | 6 | 9 | 12 | 15 | 18 | 21 | 24 |
|---|---|---|---|---|---|---|---|---|---|
| 6.5 | 8.3 | 7.4 | 6.5 | 6.6 | 6.4 | 6.6 | 6.5 | 7.4 | 8.3 |
| 5 | 14.6 | 12.0 | 10.2 | 9.7 | 9.3 | 9.7 | 10.2 | 12.0 | 14.6 |
| 3.5 | 25.1 | 19.8 | 15.1 | 12.8 | 11.6 | 12.8 | 15.1 | 19.8 | 25.1 |
| 2 | 26.2 | 23.6 | 18.4 | 15.6 | 13.6 | 15.6 | 18.4 | 23.6 | 26.2 |
| 0.5 | 31.1 | 24.2 | 19.7 | 17.3 | 14.8 | 17.3 | 19.7 | 24.2 | 31.1 |
x = distance from the first pole along the road; y = distance across the road from the near kerb (0 m) to the far kerb (7 m).
Pole layout over 200 m
5. Example calculation – rule of thumb vs calculated layout
Same site and the same target (15 lx average, U0 0.30). Calculated with the same engine.
| Rule of thumb spacing = 3 × pole height, larger 60 W light |
Stretched spacing 40 W light at 40 m |
EVIEKO calculated layout 40 W light at 24.0 m |
|
|---|---|---|---|
| Lights for 200 m | 13 | 6 | 10 |
| Spacing | 18.0 m | 40.0 m | 24.0 m |
| Average Eavg | 30.2 lx | 9.1 lx | 15.1 lx |
| Minimum Emin (darkest point) | 11.6 lx | 2.5 lx | 5.8 lx |
| Uniformity U0 | 0.38 | 0.28 | 0.39 |
| Total LED load | 780 W | 240 W | 400 W |
| Result | Meets target but about 2× over-lit | Fails average and uniformity | Meets both targets |
In this example the calculated layout uses 3 fewer poles (23% fewer) and 49% less installed LED power than the rule-of-thumb layout, while still meeting the target. Savings depend on each site – this is one illustrative calculation, not a guaranteed figure.
6. Assumptions
- Point-by-point calculation of horizontal illuminance on the road surface from the luminaire family's IES (type C) photometric data, scaled to the luminous flux shown above, multiplied by the maintenance factor 0.8.
- Flat, straight road; no obstructions, trees or reflections from surroundings; all lights operating at full output.
- The luminous flux of this model is a planning value based on its rated power; the full design uses the flux stated on the current datasheet and photometric test report.
- Battery autonomy (nights of back-up) and solar panel sizing depend on the site's location, sunlight hours and the operating/dimming profile; they are calculated in the full design and are not part of this illustrative example.
- Target values are illustrative. For a real project, use the lighting category or values set by your council, authority or engineer (for example from AS/NZS 1158 or EN 13201).
Disclaimer: Pre-design guide; final design confirmed in EVIEKO's lighting design and quotation. This sample does not represent a real project, and it is not a compliance certificate. Final compliance sign-off remains with the project engineer or approving authority.