Introduction
Robert Plaster’s net worth and life story are a testament to the American entrepreneurial dream. Known as the founder of Empire Gas Corporation, Plaster transformed a small Missouri-based propane business into one of the largest independent energy distribution networks in the United States.
At the peak of his success, Robert Plaster’s estimated net worth ranged between $400 million and $600 million, equivalent to roughly $850 million today when adjusted for inflation (2025 value).
Beyond business, he is remembered as a philanthropist, educator, and visionary who invested heavily in schools, scholarships, and community infrastructure.
Who Was Robert Plaster?
Robert W. Plaster was an American entrepreneur born on August 3, 1930, in Neosho, Missouri. Growing up during the Great Depression, he faced financial hardship early in life. Despite those challenges, his drive for success and belief in ethical business practices defined his journey.
He is best known as the founder of Empire Gas Corporation, a propane distribution company that became one of the largest in the nation during the 1970s and 1980s.
Robert Plaster Net Worth (2025 Overview)
| Attribute | Details |
| Full Name | Robert W. Plaster |
| Date of Birth | August 3, 1930 |
| Died | October 2, 2008 |
| Age (at death) | 78 years |
| Profession | Businessman, Entrepreneur, Philanthropist |
| Known For | Founder of Empire Gas Corporation |
| Estimated Net Worth (at peak) | $400 Million – $600 Million |
| Estimated Net Worth (2025 value adjusted) | ≈ $850 Million |
| Primary Income Source | Energy Distribution, Propane Industry, Real Estate Investments |
| Nationality | American |
| Major Philanthropic Focus | Education, Community Development, Christian Ministries |
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Robert Plaster’s Early Life and Humble Beginnings
Raised in rural Missouri, Plaster’s family struggled financially. As a teenager, he worked multiple jobs — from manual labor to retail — to support his household.
After serving in the U.S. Army Air Corps, he pursued an education at Southwest Missouri State University (now Missouri State University). His early exposure to hard work and persistence would later influence his approach to business and philanthropy.
Career Beginnings in Energy and Business
Robert Plaster began his career in the propane gas industry shortly after World War II.
He quickly recognized the potential for growth in rural energy distribution, particularly in regions without direct access to natural gas pipelines.
In 1963, Plaster founded Empire Gas Corporation, which started as a small propane distribution company based in Missouri. Through strategic acquisitions, strong customer service, and innovative logistics, he grew Empire Gas into one of the largest propane retailers in the United States.
Empire Gas Corporation: The Foundation of His Wealth
Empire Gas Corporation was the cornerstone of Robert Plaster’s fortune.
By the late 1970s, the company managed over 100 branch locations and served tens of thousands of customers across multiple states. Empire Gas became known for its customer-first business model and efficient supply chain, both of which set it apart from competitors.
Under Plaster’s leadership, Empire Gas achieved:
- Annual revenues exceeding $500 million by the mid-1980s
- Expansion across 15+ U.S. states
- A reputation for reliability and safety in propane distribution
Eventually, Plaster sold portions of the company and diversified his investments, setting the stage for his next venture — large-scale philanthropy.
Business Expansion and Investments
After the success of Empire Gas, Plaster diversified his portfolio across several sectors:
- Real Estate Development: He invested in commercial properties, hotels, and rural land across Missouri and Arkansas.
- Energy Infrastructure: Continued investment in energy-related facilities and technology.
- Financial Institutions: Partnered with and funded several local banks and credit unions.
- Educational Projects: Supported multiple colleges with large financial endowments.
These ventures added millions to his personal wealth, helping him build a multi-generational estate still valued in the hundreds of millions today.
Philanthropy and Community Impact
Robert Plaster believed in giving back to society, particularly in the areas of education and youth development.
He funded numerous construction projects and scholarships, many of which still bear his name.
Notable Philanthropic Contributions
- Robert W. Plaster Free Enterprise Center – Missouri Southern State University
- Plaster Stadium – Missouri State University
- Robert W. Plaster College of Business – College of the Ozarks
- Scholarship Endowments – For underprivileged and rural students across Missouri
His philanthropic philosophy was rooted in the belief that economic freedom and education are key to personal success and national prosperity.
Robert Plaster’s Net Worth Growth Timeline
| Year | Estimated Net Worth (USD) | Key Milestone |
| 1960 | $100,000 | Founded early propane business |
| 1970 | $5 Million | Empire Gas expands statewide |
| 1980 | $200 Million | Empire Gas becomes national leader |
| 1990 | $450 Million | Diversifies into real estate |
| 2000 | $550 Million | Major philanthropic projects |
| 2008 (at death) | $400 Million – $600 Million | Legacy investments and endowments |
| 2025 (adjusted value) | ≈ $850 Million | Inflation-adjusted estate and trusts |
Major Sources of Income
| Income Stream | Description |
| Empire Gas Corporation | Primary propane distribution business |
| Real Estate Holdings | Commercial and residential investments across Missouri |
| Private Investments | Partnerships in banks, energy firms, and local industries |
| Philanthropic Trusts | Endowments and charitable foundations managing legacy assets |
Family and Personal Life
Robert Plaster was married and had children, though he was notably private about his family. His descendants continue to oversee several philanthropic foundations and trusts, ensuring that his charitable work endures.
He was known as a devout Christian, emphasizing integrity, honesty, and hard work. His values are reflected in both his business philosophy and the institutions that carry his name.
Robert Plaster’s Leadership Philosophy
Robert Plaster believed in what he called “Free Enterprise Capitalism with Responsibility.”
He often stated that true success should not only benefit the entrepreneur but also uplift the community. This philosophy guided his corporate and philanthropic efforts, making him a symbol of ethical capitalism in the Midwest.
Legacy in Education and Development
Even years after his death in 2008, Plaster’s influence continues to shape Missouri’s educational and business landscape.
His donations funded:
- Business colleges
- Athletic complexes
- Entrepreneurial centers
- Scholarship programs for low-income students
The Robert W. Plaster Foundation, founded to manage his estate, continues to distribute millions annually to schools, churches, and community projects.
Real Estate and Asset Portfolio
Robert Plaster’s real estate holdings were substantial and spanned:
- Commercial complexes
- University facilities
- Lakeside estates and resorts in Missouri and Arkansas
His properties were later used for educational retreats, conservation programs, and community recreation — ensuring long-term value for local economies.
Robert Plaster’s Quotes and Values
“Success means nothing if it doesn’t help someone else rise with you.”
— Robert W. Plaster
“Free enterprise is not greed; it’s freedom — the freedom to work, create, and give back.”
These quotes summarize his life’s mission: to empower others through business success and education.
Controversies and Criticisms
While Plaster’s reputation was largely positive, some critics questioned the political influence of his donations and the management of his estate after his passing.
However, audits and transparency measures by the Robert W. Plaster Foundation have ensured that most funds continue to serve their intended educational and philanthropic purposes.
Robert Plaster’s Enduring Influence
More than a decade after his death, Robert Plaster remains an icon of Midwest entrepreneurship. His commitment to ethical business practices, education, and community growth continues to inspire both young entrepreneurs and nonprofit leaders.
Today, his name can be found on multiple universities, business schools, and civic centers, symbolizing a legacy built on integrity and generosity.
FAQs About Robert Plaster
Q1: What was Robert Plaster’s net worth?
At the time of his death in 2008, his net worth was between $400 million and $600 million. Adjusted for 2025, that’s approximately $850 million.
Q2: What company did Robert Plaster found?
He founded Empire Gas Corporation, one of the largest propane distribution companies in the U.S.
Q3: What is the Robert W. Plaster Foundation?
A philanthropic organization that manages his charitable trusts and funds educational and community projects.
Q4: What was Robert Plaster’s main philanthropic focus?
Education, business ethics, and community development across Missouri.
Q5: When did Robert Plaster pass away?
He died on October 2, 2008, at the age of 78.
Conclusion
Robert Plaster’s net worth may have reached hundreds of millions, but his true wealth lay in the impact he made on people’s lives. From humble beginnings to building Empire Gas Corporation, and from personal success to public generosity, his story remains one of resilience, faith, and free enterprise.
Even in 2025, his legacy continues to grow — not through financial value alone, but through the educational institutions and communities that thrive because of his vision.
Robert Plaster’s name endures as a symbol of entrepreneurial excellence and compassionate philanthropy.