Solar vs Diesel Light Towers for Mines and Projects: Which Fits

A light tower (mobile lighting mast) lights haul roads, pits, construction areas and emergency sites. Diesel towers have long been the standard. Solar and hybrid versions are offered more and more because fuel and engine maintenance costs can be cut. But none is always best.

What separates solar, hybrid and diesel?

• Diesel: lamps powered by a diesel generator. Consistent light as long as fuel lasts, but it needs refuelling and engine maintenance, and it makes noise and vibration.
• Solar: solar panels charge a battery (for example LiFePO4) that powers LED lamps. No fuel while working and quiet, but dependent on weather and battery capacity.
• Hybrid: solar and battery as the main source, plus a small generator as backup in bad weather or heavy load.

What about running costs?

A diesel tower has recurring costs: fuel, oil, filters and engine service, plus labour to refuel. A solar tower moves most of the cost to the start (unit and battery price) and lowers recurring costs. Hybrid sits in between. Calculate total cost over several years with your own data: hours lit per night, fuel use of the towers you run now, and the fuel price at site. Brochure comparisons cannot replace that calculation.

How do weather and working hours affect the choice?

A solar tower charges its battery in the daytime, so sites with frequent cloud or long rain need a bigger battery or a generator backup. Non-stop 24-hour work also suits hybrid or diesel better. According to the manufacturer GIDA's brochure, its solar and hybrid models run roughly 9 to 24 hours depending on model and configuration, and real results depend on weather, charging and load.

How bright does it need to be?

First define the area and the lighting level required. The mid-range models with four 150 to 200 W LED lamps on a 7 to 9 metre mast give, per the brochure, 90,000 to 120,000 lumens with an estimated coverage of hundreds to thousands of square metres, while the largest model reaches 180,000 lumens. A taller mast spreads light wider but is heavier and more exposed to wind. The brochure states wind resistance grade 8 for these towers; still follow the manufacturer's guide for extreme weather.

How often is the tower moved?

• Moved daily with the work: choose a lighter or towable unit, a mast that rises quickly and an easy locking method. An electric mast speeds up setup.
• Left long at one point: weight and size matter less, battery and panel capacity matter more.
• Needs lifting by heavy equipment: consider a skid base.

What about safety?

• Never raise the mast near overhead power lines. Keep a safe distance under site procedure.
• Set the stabiliser legs on stable ground, and follow the manufacturer's wind speed limit.
• Aim lamps so they do not dazzle heavy equipment operators or drivers.
• Train operators on raising and lowering the mast and on battery care.

Light towers and CCTV

A lit area often also needs monitoring. Several models offer an optional CCTV system on the tower, so lighting and cameras sit at one point. CCTV planning guidance for mines is in CCTV for mining areas.

A quick way to choose

1. Note the area size, working hours and how often it moves.
2. Check seasonal weather: how often there is cloud or long rain.
3. Calculate total fuel and maintenance cost of your current towers.
4. Start with one trial unit at one point for a few weeks.
5. Decide: solar for limited hours and good weather, hybrid for long operations, diesel when the load is very heavy and there is no room for panels.

Sentra is an official partner of PT GIDA International Trading Indonesia and supplies solar and hybrid light towers. Prices follow the manufacturer's official quotation. See the solar and hybrid light tower page, CCTV procurement and installation and mining solutions.

Frequently asked questions