astronomy

Tom Buttgenbach

Tom Buttgenbach is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Tom Buttgenbach rather than just read about it. In short: Thomas H. Buttgenbach is an American businessman in the clean energy industry [1].

Key takeaways

Tom Buttgenbach belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Tom Buttgenbach to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Tom Buttgenbach from memory before moving on to harder problems.

Reference excerpt

Thomas H. Buttgenbach is an American businessman in the clean energy industry [1]. He is the founder of Avantus, one of the largest independent solar and energy storage developers in the US [2][3] (previously 8minute Solar Energy, and 8minutenergy Renewables LLC).

Under Buttgenbach’s leadership, Avantus secured over $10 Billion in power purchase agreements and project financings. With over 30 GW of solar and 90 GWh of energy storage, capable of powering the homes of more than 20 million Americans day and night, Avantus had one of the largest clean energy portfolios in the U.S., before he sold it to KKR in mid-2024.[4]

Biography Buttgenbach attended the University of Cologne in Germany for undergraduate studies in physics and mathematics and earned a Ph.D. from the California Institute of Technology (Caltech) in physics and astronomy, where he attended as a Fulbright Scholar. His thesis advisor was Thomas G. Phillips. For his thesis work, Buttgenbach constructed a submillimeter heterodyne receiver which coupled the mixer to the telescope using a lens rather than a waveguide. He verified the efficiency of its design by installing it at the Caltech Submillimeter Observatory, and making astronomical observations with it. His thesis, Quasi-optical sis receivers and astrophysical observations at submillimeter wavelengths, was the first to highlight the discovery of neutral atomic carbon outside of the Milky Way galaxy. Buttgenbach worked in management consulting with McKinsey & Company, investment banking and real estate development. In 2001, Buttgenbach founded Dock3, a local delivery service. In 2015, Dock3 was sold to Leverage Concierge, a division of ACI Specialty Benefits. In December 2018, Buttgenbach launched a $200 million joint venture along with J.P. Morgan Asset Management and an affiliate of Upper Bay Infrastructure Partners. In December 2018, Buttgenbach purchased the shares of fellow co-founder Martin Hermann from 8minutenergy Renewables, LLC. In June 2019, the company made a name change to 8minute Solar Energy. The company is known for innovations in clean energy, including the Springbok solar cluster, the first solar photovoltaic (PV) facility to better the cost of fossil fuels, and the Mount Signal solar cluster, the largest operating solar PV project in the nation. In 2022, 8minute Solar Energy announced they had secured $400 million in financing from institutional investor EIG. Beginning in 2021, 8minutenergy was involved in legal disputes with Class B investors, culminating in two separate arbitration matters, both of which resulted in Final Awards dismissing all claims against 8minutenergy. At the conclusion of the first arbitration,the arbitrator dismissed all claims brought against 8minutenergy, effectively clearing all named parties of the allegations. [1] The final award in that matter was confirmed by the San Francisco Superior Court [2] with a judgment in favor of 8minutenergy of nearly $10 million entered on June 14, 2022. This resolution allowed the company to move forward, focusing on its core business of developing large-scale solar energy projects. That judgment was later upheld on appeal. The second arbitration suffered the same fate with the final award resulting in a dismissal of all claims against 8minutenergy with an award of fees and costs. The final award in that arbitration was also confirmed by the San Francisco Superior Court in May 2023 with a judgment entered in favor of 8minutenergy. That matter was not appealed. A complaint previously filed in Alameda Superior Court by The University of California Regents was resolved to the satisfaction of both parties and was dismissed with prejudice on August 13, 2024. Buttgenbach and his companies have worked with the Sierra Club to ensure solar development protects the environment. Buttgenbach is on the Green Advisory Board of the California League of Conservation Voters and sits on the board of directors for the Los Angeles Business Council. In 2020, he was named an Entrepreneur of The Year for Greater Los Angeles by Ernst & Young. In 2022, he was recognized as a Visionary in the L.A. Times’ C-Suite: Trends, Updates and Visionaries Magazine and named to the Board of Directors for the Los Angeles Business Council.

References

Illustrations

Worked examples

Example 1 — a first encounter with Tom Buttgenbach

Start with the simplest possible case. Write down what Tom Buttgenbach claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Tom Buttgenbach before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Tom Buttgenbach ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Tom Buttgenbach

In research: Tom Buttgenbach appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Tom Buttgenbach in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Tom Buttgenbach is common in secondary-school and first-year university syllabi. It links to neighbouring topics American businesspeople, American company founders, Living people, so understanding it makes those chapters shorter.
In everyday life: Look for Tom Buttgenbach outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Tom Buttgenbach in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Tom Buttgenbach means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Tom Buttgenbach out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Tom Buttgenbach in simple terms?

Thomas H. Buttgenbach is an American businessman in the clean energy industry [1].

Why does Tom Buttgenbach matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Tom Buttgenbach?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Tom Buttgenbach.