Explore all options, risks, and technology requirements for your most successful renewable project
Our solutions overcome your renewable development hurdles
Our team shares society’s concerns about climate change and is helping our clients with solutions to address this global challenge. As a leader of consulting, field services, and engineering problem-solvers worldwide, HGA is committed to addressing the energy transition and lowering the carbon footprint of our clients.
HGA’s innovative, sustainable renewable solutions help our clients address their landfill, biogas, biomass, flare gas management, and solar field development challenges. We are proud to have the experience and processes in place to manage and deliver industry-leading results. Our commitment to provide affordable, reliable, or sustainable energy is integrated in every project throughout our business.
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Landfill Gas
Providing consultancy services and comprehensive engineering services for handling methane rich gases, such as from landfills and AD plants
The anaerobic digestion (AD) of organic waste emits methane, commonly referred to as “Biogas” or “Biomethane.” Having low carbon intensity scores and very small amounts of water vapor and nitrogen, Biogas is an extremely clean alternative to traditional natural gas. These inherent properties allow Biogas to be efficiently scrubbed of impurities producing high-quality Renewable Natural Gas (RNG) which can be used as a substitute for or blended with traditional natural gas. Having worked in the pipeline sector and chemical industry since our inception, HGA understands the process to collect, clean, and transport the RNG through pipelines or as highly marketable CNG and LNG.
New Facilities or Updating/Converting
Whether you plan to build a greenfield processing plant or looking to optimize your existing facility HGA can advise you from concept to start up. Our EPCM approach to biogas processing provides our clients with services from consultation and design to construction, commissioning, and start-up. With over 20 years of experience in engineering and project management, our team has successfully executed projects from $100,000 to over $150,000,000. Having designed and built some of the earliest LFG and biogas processing plants in the U.S.; our team offers more than 90 years of combined experience in renewable fuels processing.
Digester Design & Selection
For new biogas facilities sizing and selecting the proper digester is a critical step in designing the overall process. Having experience with a variety of digester styles and several agricultural and municipal waste streams, HGA understands the significant variables to consider ensuring the proper digester is selected for maximum efficiency and reliability. We work closely with industry-leading digester manufacturers to select the proper digester for your application.
H2S and siloxane removal
HGA’s approach to H2S and siloxane removal utilizes a regeneratable liquid scavenger system that discharges elemental Sulfur and therefore produces no air emissions. With the use of a liquid scavenger, our process eliminates the need for periodic solid media replacement, potential downtime, and hazardous waste disposal that is required by dry H2S removal systems and thermal oxidizer permitting. For siloxane removal, HGA incorporates a deep chilling technology that combines the necessary dehydration for biogas treatment with a novel approach for siloxane removal which discharges the removed siloxanes and VOCs as an aqueous discharge, eliminating the air emissions of other removal technologies.
Have you considered LNG?
The ability to further process biogas into Liquified Natural Gas (LNG) offers biogas producers that were previously unable to maximize the value of their asset a viable means to access the RNG market’s full potential. Not only is LNG a higher quality, but the higher-valued product (~ 98% pure methane) is also easily transportable by truck and rail providing new access to a multitude of potential customers and applications. This approach is particularly applicable to projects where natural gas pipelines are either logistically inconvenient or in areas difficult to permit interconnections.
Traditional vs. Virtual Pipeline
HGA has successfully designed and constructing pipelines for over 20 years. If your facility has a pipeline nearby and building a short (feeder) pipeline to tie into a larger one is the most feasible option for you, we can help determine the right layout, assist in getting right-away and permits, as well as design and construction.
For trusted expertise and biogas/biomass system development, you can rely on HGA.
Once considered a liability, Landfill Gas (LFG) is now being transformed into an asset benefitting landfill owners, communities, industry, and the environment. With a composition of approximately 50% Methane, LFG is a renewable alternative to traditional natural gas. With over 30 years of experience in the pipeline and chemical industries, HGA offers municipalities, project developers, and industrial companies the EPC services they need to efficiently collect, clean, and transport the refined LFG (methane) through pipelines or as highly marketable CNG and LNG. The HGA Team has more than 90 years of experience in the development of landfill gas into merchantable products.
New Facilities or Updating/Converting
Whether you plan to build a greenfield processing plant or looking to optimize your existing facility HGA can advise you from concept to start up. Our EPCM approach to LFG processing provides our clients with services from consultation and design to construction, commissioning, and start-up. With over 20 years of experience in engineering and project management, our team has successfully executed projects from $100,000 to over $150,000,000. Having designed and built some of the earliest LFG processing plants in the U.S.; our team offers more than 90 years of combined experience in renewable fuels processing.
HGA Gas Treating process
HGA has developed a novel process designed to handle high atmospheric intrusion, without the use of a Nitrogen Rejection Unit (NRU) or the need for high inlet gas compression. This unique approach is the preferred process for landfills with high levels of N2 due to atmospheric intrusion. The removal of the NRU, the DEOx unit, and high-pressure compressors lowers both installation and maintenance costs while maintaining high volume capacity and ultimately producing a higher concentration of Methane.
H2S and siloxane removal
HGA’s approach to H2S and Siloxane removal utilizes a regeneratable liquid scavenger system that discharges elemental Sulfur and therefore produces no air emissions. With the use of a liquid scavenger, our process eliminates the need for periodic solid media replacement, potential downtime, and hazardous waste disposal that is required by dry H2S removal systems and thermal oxidizer permitting. For siloxane removal, HGA incorporates a deep chilling technology that combines the necessary dehydration for LFG treatment with a novel approach for siloxane removal which discharges the removed siloxanes and VOCs as an aqueous discharge, eliminating the air emissions of other removal technologies.
Have you considered LNG?
The ability to further process LFG into Liquified Natural Gas (LNG) offers LFG and Biogas producers that were previously unable to maximize the value of their asset a viable means to access the RNG market’s full potential. Not only is LNG a higher quality, but the higher-valued product (~ 98% pure methane) it is also easily transportable by truck and rail providing new access to a multitude of potential customers and applications. This approach is particularly applicable to projects where natural gas pipelines are either logistically inconvenient or in areas difficult to permit interconnections.
Traditional vs. Virtual Pipeline
HGA has been involved in the design and construction of pipelines and powerlines for over 20 years, with approximately 5,000 miles of route evaluated and designed by HGA. If your facility has a pipeline nearby and building a short (feeder) pipeline to tie into a larger one is the most feasible option for you, we can help determine the right layout, assist in getting right-away and permits, as well as design and construction.
For trusted expertise and landfill gas system development, you can rely on HGA.
As the US-EPA moves to increase the controls on methane and CO2 emissions, an early target will be the reduction of oilfield flared gas. As these flares are inefficient, the emission of both elements is high. HGA has designed a compact flare liquefaction unit that will eliminate the flare while providing an integrated system to produce field electricity and transportable natural gas liquids. As these units are modular, they may also be relocated to new flare sites as interconnecting pipelines are extended to the original locations.
With increasing pressure to reduce carbon emissions and the critical needs of companies to meet their ambitious mid-century net-zero commitments, HGA has created its multi-disciplinary Carbon Management Services team uniquely positioned to provide comprehensive services for carbon reduction strategies, option evaluation, project planning, and implementation. From carbon capture, utilization, and storage (CCUS) assessment and comprehensive development planning to execution of renewable projects, HGA carbon management experts combine expertise and the latest modeling tools and approaches to solve energy transition issues across the full spectrum of energy sources and uses.
Regardless of your CO2 project’s scale, the HGA team of experts can assist you with costs, evaluation of emissions reductions, and implementation of carbon reduction technology to help you meet your specific business and CO2 reduction goals.
Trusted advisory services in carbon reduction implementation
Research and feasibility assessments
Evaluation and implementation of carbon policies and regulations
Federal and state carbon capture, utilization and storage (CCUS) policy, law, and regulation
Tax incentives (45Q)
Emissions credit certification, valuation, verification, and market assessment
Carbon technology assessment solutions
Anthropogenic CO2 capture/production and acquisition
CO2 pipelines
Renewable energy and electrolysis
CO2/EOR—operations and CO2 storage
Dedicated CO2 storage development and operation
Oil and gas upstream, midstream, and downstream technology systems integration
Effectively communicate your carbon reduction program
Industry expertise to effectively communicate your company’s initiatives
Help refine your message to build awareness and recognition
Project development and implementation
Owner’s engineer, engineering production and evaluation, and technology integration
CO2 capture engineering
CO2/EOR and residual oil zone (ROZ) specialist: reservoir and resource assessment, and project design
Class VI well permitting for large scale CO2 injection and long-term geological sequestration
Renewable energy
Project finance
The HGA team’s portfolio of Carbon Management Services offers a unique combination of expert analysis to enable our clients to make better-informed business decisions while meeting the demand for affordable energy while reducing CO2 emissions. With years of experience, we provide carbon capture and storage and carbon sequestration solutions that will help you make informed decisions on the costs, developments, and investment opportunities of implementing CO2 reduction technology.
If you need assistance in achieving your emission reduction commitments in an enduring and sustainable way with transparency, accountability, and credibility, contact HGA Carbon Management Services.
With a long history in the timber industry, HGA understands the challenges you face and provides a comprehensive range of technical and advisory solutions you need to help turn timber residue into a useful renewable energy source.
Whether it be wood residue from timber processing used to generate heat or electricity or create pellets for biofuel, HGA can help you with your wood recycling and waste initiative. Let us help you develop a solution to reduce your environmental impact, save costs, and keep up with evolving customer demand.
Biomass Power Plant Solutions
We provide process improvements to transform wood waste into a profitable energy source.
HGA provides our solar power clients with a comprehensive range of technical and advisory services, including project assessment, site planning analysis, and design, engineering, and construction management.
HGA has a broad range of solutions to help clients develop solar projects:
