ISLAND RENEWABLE ENERGIES
Achieve Net-Zero Now
Island Sourced Waste-to-Energy
WHO WE ARE
About Company
In Puerto Rico, Island Renewable Energies was founded by a consortium of seasoned industry leaders to finance, develop, design, build, and operate ESG-positive energy assets — with a strategic focus on Renewable Natural Gas. Our mission is to help clients reduce Scope I, II, and III emissions through sustainable, high-impact energy solutions.
Our Mission
Our mission is to provide forward-thinking energy solutions that accelerate environmental stewardship and support our clients in reaching Net-Zero goals. We focus on measurable reductions in Scope I, II, and III emissions through smart, sustainable infrastructure.
Health
Committed to a safe and healthy work environment, we implement best practices to prevent occupational illnesses and injuries and promote overall employee well-being.
safety
Safety is at the core of our operations — we actively identify and manage workplace risks to create a culture where everyone goes home safe, every day.
environment
Our environmental commitment focuses on preventing pollution, reducing emissions, and ensuring that our renewable energy projects support a cleaner, more sustainable future.
What We Offer
Partnering with clients to transform organic waste — from landfills to livestock operations — into scalable, bankable renewable energy infrastructure, Island Renewable Energies provides the experience and capital to develop, design, build, and operate your renewable energy assets from start to finish.
RNG
Renewable Natural Gas (RNG), also known as biomethane, is a renewable fuel produced from biogas (gaseous product of organic matter decomposition) that's upgraded to pipeline-quality and used interchangeably with conventional natural gas.
R-LNG
Liquefied Natural Gas (LNG) is natural gas that's cooled to a liquid state, making it much easier and more economical to store and transport, especially over long distances like across oceans.
R-CO₂
Renewable Carbon Dioxide (CO₂) refers to capturing and utilizing CO₂ from sources that are not fossil fuels, like biomass, industrial waste, or the atmosphere, to create a circular carbon economy and reduce reliance on fossil fuels.
R-CNG
Compressed Natural Gas (CNG) is natural gas, primarily methane, compressed to less than 1% of its volume at standard atmospheric pressure, making it a viable fuel for vehicles and other applications.
Industry Experience
Landfill Gas-to-RNG/Power
Landfill gas (LFG) is a natural byproduct of decomposing organic waste in landfills. It consists primarily of methane — a potent greenhouse gas — along with carbon dioxide, nitrogen, and trace compounds. If left uncontrolled, LFG emissions contribute to climate change and can cause odors and other environmental hazards.
To harness its energy potential, LFG is collected through a network of wells and piping systems installed at the landfill. The gas is then transported to a processing facility, where it undergoes a series of treatment steps to remove impurities and increase methane concentration.
Water vapor is removed to prevent corrosion and allow efficient gas compression.
Carbon dioxide (CO₂) is stripped out to enhance the heating value of the gas.
Hydrogen sulfide (H₂S) is eliminated to reduce odor and prevent equipment damage.
Nitrogen and oxygen are also removed to meet pipeline-quality standards.
The resulting high-purity Renewable Natural Gas (RNG) is compressed and injected into natural gas pipelines for commercial and industrial use.
This process transforms a harmful waste emission into a valuable, renewable energy source. LFG-to-RNG projects reduce reliance on fossil fuels, support responsible waste management, and contribute to local economies through job creation and new revenue streams.
Livestock Operations-to-RNG
Large-scale livestock operations, such as dairy and hog farms, produce hundreds of thousands of tons of manure annually — a significant source of smog-forming pollutants and greenhouse gas emissions.
Through anaerobic digestion, this waste is processed in covered lagoons or digesters, where naturally occurring bacteria break down the organic material and produce biogas, a mixture primarily composed of methane and carbon dioxide.
The biogas is captured and sent through an upgrading system, where carbon dioxide and other impurities are removed. The result is a high-purity stream of renewable natural gas (RNG) that can be injected into existing natural gas pipelines for widespread use.
By capturing methane — a greenhouse gas more potent than CO₂ — these projects significantly reduce emissions while turning livestock waste into a valuable energy resource. RNG from livestock not only displaces fossil fuels, but also provides a practical solution to waste management challenges in agriculture.
In addition to the environmental benefits, livestock-to-RNG projects create economic opportunities in rural communities, generating new revenue streams for farmers and energy providers alike.
Source-Separated Organic Waste-to-RNG
Our Source-Separated Organic Waste (SSOW) to Renewable Natural Gas (RNG) process collects food waste from households, grocery stores, and commercial food producers, along with Fats, Oils, and Grease (FOG), to serve as high-energy liquid feedstock.
By diverting these organic materials from landfills and incineration, we reduce harmful methane emissions and support municipal and commercial zero-waste goals.
Through anaerobic digestion, naturally occurring microbes break down the organic matter in an oxygen-free environment, producing biogas — a renewable gas typically made up of around 60% methane.
This biogas is then upgraded to RNG by removing carbon dioxide, hydrogen sulfide, moisture, and trace contaminants, resulting in a high-purity, pipeline-quality fuel. The RNG can be injected into existing natural gas infrastructure or used on-site to generate heat, electricity, or vehicle fuel.
In addition to reducing greenhouse gas emissions, this process supports a circular economy, creates renewable energy from waste, and reduces dependence on fossil fuels.
The residual byproduct, known as digestate, can also be repurposed as a nutrient-rich soil amendment, adding further environmental value.
SSOW-to-RNG projects contribute to cleaner communities, create green jobs, and offer scalable solutions for municipalities, food service providers, and industrial clients seeking to meet sustainability targets.
Projects
Puerto Rico
Three Landfills
30-Year Term
Ponce
300,000 MMBTU
Salinas
150,000 MMBTU
Humacao
900,000 MMBTU
BRIAN KALT
Our President
Mr. Kalt is an accomplished executive with over 25 years of leadership experience in the biogas and oil & gas wastewater treatment sectors. Brian’s expertise spans executive leadership, operational planning, project and business development, client relations, and media strategy. He is widely respected for his integrity, results-driven approach, and forward-thinking vision in navigating today’s evolving energy landscape.
Serving in the United States Marine Corps, Brian deployed three times and is a combat veteran of Operations Enduring Freedom and Iraqi Freedom. He has received numerous awards and citations, including the Presidential Unit Citation. Brian brings battlefield-tested discipline and mission-driven focus to the complex world of clean energy infrastructure.
As President of Island Renewable Energies, Mr. Kalt leads the development, financing, and execution of multi-million-dollar renewable energy projects, with a particular focus on Renewable Natural Gas (RNG) and ESG-aligned solutions. He has a proven track record of raising both debt and equity capital, managing strategic growth, and guiding organizations through every phase of project development.
He is also a strong advocate for cultural diversity, equity, and inclusion — principles he actively integrates into his leadership philosophy and organizational culture.
Brian holds a B.S. from Suffolk University in Boston, Massachusetts, and an MBA from The University of Texas.
Meet Our
Partners
EC WASTE
EC Waste is the leading provider of non-hazardous waste management and disposal services in Puerto Rico since 1961. They protect the quality of life in many communities, providing waste solutions to over 60,000 residential clients and over 8,000 commercial customers in Puerto Rico.
As a purpose driven Company, EC Waste partners with their communities and customers to achieve integrated, cost effective, environmentally sound, and sustainable solid waste handling solutions. For this reason, EC Waste are committed to being recognized as leaders for environmental services in every community we serve through excellence in compliance, environmental stewardship, safety, quality, respect and customer experience and sustainability.
VRM PENZINI CAPITAL
Founded in 2020, VRM Penzini Capital is a dynamic private equity firm focused on unlocking growth in the lower middle market, with a strategic investment presence across the Southeastern United States and Puerto Rico.
The firm specializes in identifying and scaling resilient businesses with strong leadership teams, proven operating models, and untapped potential. VRM Penzini Capital targets companies generating up to $50 million in revenue and under $10 million in EBITDA, providing not just capital — but hands-on strategic guidance, operational expertise, and long-term partnership.
With deep experience across sectors and a disciplined investment approach, VRM Penzini Capital concentrates its portfolio across five high-impact verticals: Renewable Energy, Business Services, Spirits, Consumer Products, and Retail & Consumer Services.
Its growing and diversified portfolio includes standout companies such as Starsolar, Hello Media, Ron del Barrilito, Bach & Stern, OutTaskers, Qdoba, and Miami Franchise Group — each reflecting the firm’s commitment to building enduring value and driving innovation across industries.
Whether backing established operators or emerging challengers, VRM Penzini Capital is purpose-built to scale businesses, fuel transformation, and generate sustainable, long-term returns.
VRM COMPANIES
Since the 1960’s, VRM Companies has led the way in real estate development and community improvement capabilities by consistently relying on their pioneering spirit. As one of the largest and most complete real estate developers in the Caribbean, VRM has been instrumental to Puerto Rico’s socioeconomic growth. This has led to the development and construction of over 10,000 homes, more than 50 single family and multi-family communities, 4,000 subdivided lots for residential, recreational and other uses, and over 250,000 square-feet of commercial projects.
In recent years VRM has expanded its services to the U.S. mainland and international markets, developing residential and commercial projects in North Carolina, Colorado, Georgia, Arizona, Florida, and the Dominican Republic.
In addition to the real estate business, VRM is also engaged in strategic investments that include securities, bonds, stocks, notes and investment lending. VRM has also diversified into several private equity and venture capital investments.
VENTURE
Founded in 2007, Venture is known as a leader in the treatment and conversion of biogas derived from landfills, animal manure and source separated organic food waste to various forms of energy including electricity, heat and renewable natural gas. Pittsburgh-based, Venture provides services to clients throughout North America and abroad ranging from front-end engineering to detailed design, construction management, EPC and O&M services.
Venture’s core staff of engineering professionals are experienced in a variety of process industries including energy, refining, chemicals, petrochemicals, alloys, consumer products, wastewater treatment and general manufacturing industries. They have registered professional engineers heading each discipline, and a design staff reflecting a balance of disciplines and a range of experience. Venture currently employs 80+ employees, across all major engineering disciplines.
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