Waste to Energy

What you need to know

HSA Golden has partnered with RCBC Global, the manufacturer of an innovative waste-to-energy (WtE) system not currently available elsewhere.  Headquartered in Hendersonville, North Carolina, RCBC Global has developed and patented a line of rotary combustors capable of producing up to 6.9 megawatts of electricity.  The technology is robust; it’s based on rotary kilns which have been used for decades in the fertilizer, cement, and industrial drying sectors.
Sorted and shredded waste is placed in a hollow, slowly rotating cylinder.  This provides maximum contact between solids and gases by constantly cascading the waste and thereby affecting high rates of heat transfer.  Boiler tubes within the cylinder heat water to high-pressure steam, which them   The WtE system can easily be scaled by adding cylinders (combustors), using the same front-end waste processing equipment, as well as the same back-end emissions management system.  This allows for low initial construction cost, with the flexibility to increase waste processing and power generation capacity as needed.
In partnership with RCBC Global, HSA Golden can provide a turnkey WtE solution almost anywhere in the world.  The system is ideal for microgrids, island settings, remote locations, or anywhere combustible waste is available and electricity is needed.  Importantly, from an investment standpoint, system payback may be as short as five years (depending on local electricity and waste disposal costs), while at the same time freeing up landfill airspace, mitigating greenhouse gases, providing employment opportunities, and many other ancillary benefits.

TRASH TO CASH: Summary of opportunity

  • Most municipal waste disposed in landfills, at significant cost

  • Recycling works, but recyclable material gets landfilled anyway

  • Landfills are sources of both air and groundwater pollution

  • Landfills are difficult to impossible to redevelop after waste disposal ceases

  • Rotating combustor waste to energy (RCWTE) system produces power reliably and efficiently, and from a wide variety of trash

  • RCWTE generates power at a cost significantly less than utilities

  • Important for corporations seeking sustainability options and waste minimization strategies

  • Rapid return on investment and tremendous free cash flow

Rotating Combustor Waste to Energy System

  • Reliable – Rotating combustor system developed over 20 years ago
  • Simple – System based on proven technology used in rotary cement kilns and clothes dryers
  • Scalable – Three sizes (1.5, 3, and 6 mw); add combustor units as needs grow


    •  No fuel costs; rather, fuel constitutes large component of income stream
    • No moving parts within high-temperature zone (minimal maintenance)
    • Approximately 50% greenhouse gas reduction relative to waste landfilling
    • Technology facilitates near-total waste combustion and controls NOx
    • Ash has beneficial uses (soil augmentation; construction materials)
    • Small system, high efficiency at low waste volumes

Waste to Energy

Waste-to-energy (WtE) technologies convert waste materials to energy in the form of electricity and/or heat. The energy is generated in most cases directly via waste combustion, or from the degradation of organic waste. HSA Golden specializes in the following waste to energy technologies:


  • Incineration/Combustion
  • Landfill Gas (LFG)
  • Anaerobic Digestion


Whether your WtE project involves incineration, pyrolysis, gasification, anaerobic digestion, or another process, site selection is a necessary and critical project element. Site selection involves an often-complex series of challenges and opportunities that involve research, an ability to seamlessly interact with a wide variety of regulatory and governmental agencies.


  1. A steady and consistent supply of waste (fuel) is critical to project success. The site location must be convenient to waste haulers.
  2. The type of waste must be considered. Each waste has its specific biological, environmental, and logistical characteristics. Factors such as waste uniformity, odor, and processing equipment needed will influence site and project development.
  3. The waste will require storage, handling, and processing. The site must not only accommodate these activities, but provide reserve capacity for times when additional waste is available or for facility expansion.
  4. Real estate cost can, of course, make or break the project.
  5. Political concerns are unique to each location. For example, a community that has a long history of environmental activism would almost certainly present challenges.
  6. Permitting requirements involve both detailed knowledge of the permitting process and a solid working relationship with the governmental and regulatory agencies. For example, regional air permitting requirements may make a project unviable.
  7. Site geology must be suitable to support equipment, structures, and waste stockpiles.
  8. It’s imperative that the engineering consultants have developed their own extensive database of information gleaned from their own experiences in project management, design and site selection. They should also have access to shared data/intelligence from national, state, and local agencies.
  9. The flexibility to stay on top of new and emerging technologies to assess the potential value and utility of these.


  1. Regional and community tax bases should be considered; it might be much less expensive to operate a facility in Kentucky than Southern California. What’s saved in tax expenditures could be used for operational costs.
  2. Plant accessibility and the ability to draw upon a readily available workforce are key concerns.

Landfill Engineering

Please find below some of our waste-to-energy projects for which we’ve been retained over the years. Some are complete, and some are ongoing. We’re always adding more projects, so please check back from time to time.

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Thanks again for looking over our site and considering us for help with your project. We would be pleased to assist you with your environmental engineering and consulting needs, whether they are large or small. Please take a moment and fill out as much of the form below as you can, and someone from our firm will quickly respond to your inquiry request. Or, just pick up the phone and call us at +1 407 649 5475.