Jeffrey Householder
Analyst · the Maxim Group
Thank you, Beth. As Beth noted, we remain well positioned for future growth with our capital capacity and the strength of our balance sheet. Ability to generate strong earnings growth on the capital investments we make speaks to the proven nature of our business model.
Slide 11 highlights our 5 platforms for growth, which focus on optimizing our existing businesses through organic growth and business transformation, as well as investing in growth opportunities in gas transmission, propane, virtual pipeline solutions through Marlin and sustainable investments, including RNG and hydrogen.
As I've already highlighted, we continue to experience significant demand for the energy services we provide, and we're excited with the opportunities we see on the horizon to drive our long-term sustainable growth.
On Slide 12, we highlight a few of the major initiatives that we continue to work on. As shown on the slide, a significant portion of our projected capital investment is devoted to expanding our existing core businesses and capturing the growth in our service territories.
Our latest margin table on Slide 13 highlights key projects and initiatives, including pipeline expansion, CNG and RNG transportation, acquisitions and regulatory initiatives. As we frequently remind you, this table does not include organic growth. Year-to-date, our total margin increase is approximately $28 million, of which $12.9 million is reflected on this table. Key projects are expected to generate approximately $60.5 million and $70.6 million in gross margin for the years 2021 and 2022, respectively. Pipeline expansions are expected to generate $12.1 million in incremental margin in 2021 and 2022 compared to 2020, including the new projects in Florida, where we have an expansion of beachside pipeline extension to serve [ NextEra ] Florida City gas distribution system.
As we've said before, we are a beneficiary of our geography as populations grow and consumer demand for natural gas remains high. One significant example of the demand for gas is our transmission and distribution project to bring natural gas for the first time to Somerset County, Maryland. It was a significant accomplishment during the third quarter to place the Somerset section of our Del-Mar Energy Pathway gas transmission project into service. We're already building distribution systems in the county to extend natural gas service to customers and local community, displacing carbon-intensive fuel sources like oil and wood chips.
We're particularly pleased with the full integration and margin estimates of $6 million and $6.4 million for 2021 and 2022, respectively, from the acquisitions of Elkton Gas and Western Natural Gas. We expect acquisitions to contribute further with the $1 million margin increase from our recent acquisition of the Escambia Meter Station in the Florida Panhandle near our FPU piping -- pipeline serving Pensacola area.
On the regulatory front, we also made significant advances on several fronts. In July, our settlement with the Office of Public Counsel regarding our COVID-19 regulatory asset was finalized. Under the settlement, we established regulatory assets totaling $2.1 million during the third quarter, which will be amortized over 2 years beginning January 1, 2002, and recover through the respective rate mechanisms for natural gas and electric operations.
There will be an increase in margin that offsets the amortization associated with these regulatory assets. We also reached an agreement with the Maryland Public Service Commission staff and the Maryland Office of People's Counsel related to Elkton Gas' [ Aldyl-A ] pipeline replacement program. Under this program, we are accelerating the replacement of the pipe and recovering the cost in the form of a fixed charge rider to a proposed 5-year surcharge.
Let me dive into more detail on some of these projects. Moving now to Slide 14. In terms of renewables, we were excited to announce the completion of our first RNG transportation project. During the third quarter, our Aspire Energy business completed a 33.1 mile pipeline, which will transport RNG generated at the Noble Road Landfill in Shiloh, Ohio, to Aspire's existing infrastructure in the region. The RNG will be used to displace conventionally produced natural gas.
In addition to serving residential and commercial customers, the RNG will be dispensed in the fueling stations to fuel CNG vehicles. The Noble Road Landfill RNG project is expected to capture and transport quantities of RNG that are equivalent to 6.9 million gasoline gas equivalents per year.
We remain focused on investing in additional RNG projects. For 2022, we estimate $1 million in additional gross margin for RNG-related transportation projects. As we've discussed in prior calls, these projects take considerable time to develop as the renewable waste-to-energy biogas market matures, we expect to see significant opportunities to serve the facilities and participate in their development through RNG offtake agreements, the provision of various services, for example, conventional gas or fertilizer growing and solar electric generation, as well as equity investments. These investments will also create new financing opportunities.
As Beth mentioned, we recently entered into our first sustainable-linked financing facility, and we'll look to use that type of funding going forward. We'll continue to provide additional information as the projects begin construction and get closer to completion.
Two waste-to-energy projects that continue to be developed on the Delmarva Peninsula in the Bioenergy DevCo and CleanBay projects. Following completion, both projects will process significant quantities of poultry waste and produce renewable natural gas, organic fertilizer and various other soil amendment products.
Our Marlin Gas Services subsidiary will transport the RNG to the interconnect point we're constructing on our Eastern Shore Natural Gas Pipeline system. We continue to focus on projects that provide opportunities to solve fundamental environmental waste management issues in our service territory. Providing a solution to an underlying environmental waste management situation is the foremost benefit of the projects we're targeting. As an example, processing poultry waste into biogas helps strengthen an industry that is critically important to the Delmarva job market and economy. The production of valuable and marketable renewable natural gas is certainly important to the economic viability of these projects, but it's not the sole reason we're pursuing these deals.
We're nearing the end of construction on CNG filling station at the Port of Savannah in partnership with Southern Gas. The station is designed to serve local CNG fleets, including port vehicles, as well as providing a logistics and refueling plant for our Marlin CNG fleet. The station aligns with the company's ongoing commitment for environmental responsibility by providing supply and clean burning natural gas to fuel vehicles and making it available to customers with limited access to natural gas.
CNG-powered vehicles produce lower emissions from gasoline and diesel vehicles, reducing greenhouse gas emissions by up to 30% and nitrogen oxide emissions by 85%. Our intention is to provide opportunities for fleets to elect renewable CNG as an option, and we're working currently with an upstream gas marketing company to provide renewable supply options for our CNG customers.
Slide 15 shows the investment of approximately $153 million in recent and planned expansion projects through 2023. The annual cumulative gross margin contribution is estimated to be $24.2 million when these projects are fully in service.
And the last note, our work to introduce the hydrogen-natural gas fuel blend at the Eight Flags CHP turbine site on Amelia Island, Florida, is nearing completion. The interconnect facility is complete, and we are days away from completing the modifications to the fuel system, turbine and other mechanical equipment. Our revised [ air ] program has been approved, and we've converted 4 of our Marlin CNG tankers to transport hydrogen. This project will begin under a 4% hydrogen blend, but we anticipate increasing the percentage up to 20% next year when we complete the scheduled replacement of our turbine.
I mentioned in our prior conference call that we were supporting a hydrogen research project proposed by Solar Turbines to the U.S. Department of Energy. We've offered our Eight Flags CHP turbine on Amelia Island as a test site, and we'll be monitoring as usual emission levels from the plant to gather data on reduced carbon levels. The project gives us a unique opportunity to discover the attributes of hydrogen blends and a distribution system, particularly in the areas of safety, operational requirements, measurement, availability and effects on downstream customer equipment. We're also working with several of our existing industrial customers to identify opportunities for hydrogen blends at their facilities.
I'll now turn the call over to Jim Moriarty, who will discuss some of our more recent regulatory initiatives and our commitment to ESG as part of our corporate culture. Jim?