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HOME STAR

HOME STAR is a physics 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 HOME STAR rather than just read about it. In short: HOME STAR (or HOMESTAR), informally known as Cash for Caulkers, was a United States government program proposed in November 2009 to encourage economic growth by offering incentives to homeowners and retailers for improving the energy efficiency of existing homes. Background In late 2009 there was a broad perception that the United States economy was beginning to recover from the Late-2000s recession.

Key takeaways

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

Reference excerpt

HOME STAR (or HOMESTAR), informally known as Cash for Caulkers, was a United States government program proposed in November 2009 to encourage economic growth by offering incentives to homeowners and retailers for improving the energy efficiency of existing homes.

Background In late 2009 there was a broad perception that the United States economy was beginning to recover from the Late-2000s recession. There was a broad perception that government spending authorized by the American Recovery and Reinvestment Act of 2009 had contributed to the recovery, and some desire for the government to do more to encourage job growth and a faster recovery. In mid-November former president Bill Clinton, and John Doerr of Barack Obama's President's Economic Recovery Advisory Board, proposed different versions of an economic stimulus program by which the government would offer tax incentives to encourage people to improve the energy efficiency of their homes. Doerr, in public speeches, called the proposal "cash for caulkers". Separately U.S. Representative Peter Welch proposed a system of energy rebates to Rahm Emanuel, Obama’s Chief of Staff. Obama, in turn, proposed the idea as part of a larger new stimulus program, at a speech at the Brookings Institution on December 8, 2009. The stated goals of the proposed program are to reduce pollution, particularly greenhouse gases, by reducing household energy use, to save consumers money in the long term through lower power bills, and to stimulate American businesses through the money spent on appliances, materials, and installation. Improving the energy efficiency of "fixed infrastructure", which accounts for approximately 40% of all energy use in the United States, is considered the "low hanging fruit" of energy conservation - a step that achieves results relatively inexpensively and does not require any new technologies or changes to production or consumption methods. The name "Homestar" is a reference to the popular energy star electronic device efficiency rating system, and the nickname "Cash for Caulkers" is a play on the earlier cash for clunkers automobile trade-in incentive.

Structure As of December 2009, no proposed legislation had been released, and there were few specific details of how the program would be administered, which federal agencies would be involved, or how the tax incentives would be paid (or to whom). The program is expected to involve preliminary energy audits by private contractor energy experts, who then recommend a series of steps for each homeowner to upgrade their home's energy efficiency. As proposed the plan was for the government to pay 50% of the cost of each home improvement project through a rebate, tax credit, or funds paid to manufacturers and retailers, up to a maximum of $12,000 (~$17,003 in 2024) paid for each home. Alternatively, there was speculation that the federal government might give funds to local governments to run their own programs. There was no limitation on eligibility based on tax bracket or income. Items under consideration for the program included weatherization of home by installing additional insulation, new doors, and windows, and replacing old appliances with more energy-efficient new ones. Expensive items such as washing machines, dishwashers, refrigerators, air conditioners, and heaters, would be covered. The program was expected to cost approximately $10 billion over the course of one year, paid for out of unspent Troubled Asset Relief Program funds, and would reduce energy consumption of homes that took full advantage of the program by up to 20%. To become effective it would have to be part of a bill passed by the United States Congress.

See also Caulking Retrofitting

References

Worked examples

Example 1 — a first encounter with HOME STAR

Start with the simplest possible case. Write down what HOME STAR claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, 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 HOME STAR 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 HOME STAR 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 HOME STAR

In research
HOME STAR appears in physics 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 HOME STAR 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
HOME STAR is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2009 in American politics, Building engineering, Energy conservation in the United States, so understanding it makes those chapters shorter.
In everyday life
Look for HOME STAR 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 HOME STAR in 20 minutes

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

Frequently asked questions

What is HOME STAR in simple terms?

HOME STAR (or HOMESTAR), informally known as Cash for Caulkers, was a United States government program proposed in November 2009 to encourage economic growth by offering incentives to homeowners and retailers for improving the energy efficiency of existing homes. Background In late 2009 there was a…

Why does HOME STAR matter?

Because it connects several physics 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 HOME STAR?

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 HOME STAR.

Tags

  • 2009 in American politics
  • Building engineering
  • Energy conservation in the United States
  • Energy policy of the United States
  • Great Recession in the United States
  • Presidency of Barack Obama
  • Sustainable building
  • United States federal housing legislation
  • United States federal taxation legislation

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