How Beo Čista Energija manages a 130-hectare landfill safely and efficiently with Propeller

About the project

Beo Čista Energija isn’t just managing a landfill, they’re running complex construction, underground utilities, and energy operations across 130 hectares in Vinča-Belgrade, Serbia. Historically, monitoring progress, tracking materials, and ensuring safety on a site of this scale would have required a huge team of surveyors and constant field checks.

With Propeller, the BČE team now surveys the entire site bi-weekly, uploads the data, and has actionable insights available to project management, operator and supervision.

Among benefits Propeller brings to our workflow, one of the most important is safety. We can access and inspect areas that would otherwise require additional safety measures on site.

– Miloš Petrović, CAD Designer, Beo Čista Energija

The Challenge

Leaner, faster, smarter workflows

BC Energy & Propeller whole worksite in Propeller

Before Propeller, calculating volumes, redesigning plans, and creating reports required geodesic experts and countless hours of manual effort. Now, BČE can:

Measure and track volumes, landfill slopes, elevations and settlements
Analyze material movements and plan future construction phases
Share visual data with city representatives, supervisors, contractors and all other stakeholders
Generate reports quickly to comply with government regulations

All the project data is in one place. Everyone has access to the same information and is always up to date, which prevents errors.

– Miloš Petrović, CAD Designer, Beo Čista Energija

The Solution

Solving complex problems before they become costly

BC Energy & Propeller worksite visualized in Propeller

Planning around obstacles

During the construction of the Inert Landfill, the route of existing power line pillars ran very close to the edge of Phase 1. Using Propeller’s boundary and distance tools, BČE accurately identified the pillar locations and defined the working zones, confirming that construction could proceed safely and without interference.

Mitigating energy risk

Material had been dumped near a transmission line, threatening power supply. With Propeller’s volumetric tools, BČE calculated that 96,000 m³ of material needed removal to prevent disruption—allowing the responsible party to act quickly and avoid energy outages.

BC Energy & Propeller stormwater drainage patterns

Preventing design mistakes

Using Propeller’s hydraulic tools — including rain simulation, flow direction, and catchment area analysis – BČE was able to foresee potential water accumulation zones and surface flow paths across the landfill. Combined with cross-section analysis, the team evaluated elevation profiles and confirmed that the initial drainage channel design was not sustainable and required adjustments.

Managing infrastructure and erosion

By combining underground utility mapping with hydrological analysis, BČE restored a deformed asphalt road and improved pipe stability. Propeller helped identify drainage points, target erosion-prone slopes, and strategically place manholes for long-term maintenance.

BC Energy & Propeller cross section of their worksite

Refining cost estimates

Facing a landfill waste sliding toward a dam, BČE used Propeller’s polygon and volumetric tools to refine third-party estimates. Avoiding miscalculation, enabling accurate planning and cost reduction.

Tools that turned BČE’s data into decisions

Volume & polygon tools

Problem: Misestimation of material movements and project costs
Solution: Calculates accurate volumes for landfills, stockpiles, and slopes
Impact: Refined planning, avoided overestimates, and reduced project risk

Boundary & distance tools

Problem: Risk of conflicts with existing infrastructure (electrical pillars, underground utilities)
Solution: Measures distances and marks boundaries directly on the site map
Impact: Ensures safe operations and prevents construction errors

Cross-section & elevation analysis

Problem: Impossible or unsafe design plans
Solution: Visualizes slopes, channels, and terrain in 2D/3D
Impact: Avoids mistakes and informs design corrections early

Orthophoto exports & CAD interoperability

Problem: Disconnect between survey data and engineering plans
Solution: Exports imagery and topography directly into Civil 3D/CAD and other platforms
Impact: Design team works remotely with full context, reducing unnecessary site visits

Hydrology & erosion monitoring tools

Problem: Erosion and drainage affecting landfill stability
Solution: Tracks water flow and slope changes over time
Impact: Targeted restoration and prevention of long-term environmental issues

Reporting & sharing tools

Problem: Manual reporting is slow and inconsistent
Solution: Generates reports and visualizations for internal teams and government bodies
Impact: Transparent, quick, and easy reporting to all stakeholders

Full site visibility on mobile

Problem: Field teams need context without walking dangerous areas
Solution: Access full site data via Propeller’s mobile app
Impact: Safer and faster on-site decision-making

The Result

Data they can trust and prove

When a section of the old landfill collapsed and waste spilled, BČE used Propeller to define the pre-collapse boundary, clearly proving to authorities what the conditions were before the incident. Historical survey data now lets them track progress, validate designs, and document changes for government compliance with precision and confidence.

We use every single feature Propeller offers. It saves time, it saves money, and it provides high precision and a clear picture of the site. I can see this becoming the standard for all large-scale earthworks and energy projects moving forward.

– Miloš Petrović, CAD Designer, Beo Čista Energija