KiloWiseGrants and rebates: what to check before you spend (US/UK/CA/AU)
KiloWise editorial team · Last updated 5 November 2026 · Category: Bills & Tariffs
A grant or rebate can turn an insulation job that looks too expensive into the best value job on your list. It can also turn into a disappointment: the scheme closed last month, you were never eligible, or the installer quoted a price that assumed a grant you cannot claim. The difference between those two outcomes is the order you do things in. Check first, spend second.
This guide explains what to check before you spend money on insulation, a heat pump, or any other energy-efficiency work — and how to check it. It lists no grant scheme, no amount, and no deadline. That is deliberate. Schemes change fast: they open, close, change their eligibility rules, and run out of funding, sometimes with little notice. A list printed here would be out of date before you read it, and an out-of-date amount is worse than no amount at all. Instead, this guide teaches you how to find the official scheme page for your country, what eligibility means, what expiry looks like, and how to work a grant into your payback calculation.
If you have already decided which job you want — loft, wall, or floor insulation — read our guide to what insulation pays back first alongside this one. The two guides work together: this one tells you how to check for help with the cost, that one tells you which job to spend it on.
What "check first" means
"Check first" means four checks, in this order, before you sign a contract or pay a deposit. First, does a scheme exist for the job you want, in your country and your area? Many schemes are national, but many are regional — a state, province, or local authority scheme that does not exist one county over. Second, are you eligible? Eligibility is usually a set of conditions about your home, your income, your heating system, or the energy rating of your property, and failing one condition can mean failing the whole application. Third, is the scheme still open? Schemes have start dates, end dates, and funding limits, and a scheme can close early when its funding runs out. Fourth, what does the scheme actually pay for, and how is it paid — as a discount on the installer's invoice, a rebate after the work, or a voucher you redeem?
The order matters because each check can change the decision. If no scheme exists for your job, you decide on the full price. If you are not eligible, the same. If the scheme is open but only pays for a different type of work — say, a heat pump rather than insulation — then the job you should do first may change. And if the scheme pays as a rebate after the work, you need the cash up front, which is a different decision from a discount applied at the time of installation.
How to find the official scheme page
The only source you should trust for whether a scheme exists, what it pays, and whether you qualify is the official scheme page — the page published by the government body or the authorised administrator that runs the scheme. Installer websites, comparison sites, and social media posts can point you towards a scheme, but they are not the scheme. They can be out of date, they can describe a different country's scheme, and they can describe a scheme that has already closed.
In the UK, start with GOV.UK — the government's own site — and search there for energy efficiency grants, then cross-check anything you find against Ofgem, the energy regulator, which publishes information about schemes it administers. In the US, start with the US Department of Energy's site and your state energy office, because many rebates are state-level rather than federal. In Canada, start with Natural Resources Canada and your provincial or territorial government energy pages. In Australia, start with your state or territory government energy pages, because most Australian energy rebates are run at state level. In every case, the test is the same: is the page on an official government domain, does it name the scheme, does it state the eligibility rules in full, and does it give a date — a start date, an end date, or a "last updated" note? If a page cannot answer those questions, it is not the page to decide on.
Be careful with search results. A search for a grant name can return pages about a similarly named scheme in another country, a scheme that closed years ago, or a commercial site that uses the scheme's name to sell installations. Check the country, check the date, and check the domain before you trust anything you read. If two sources disagree, the official scheme page wins.
Eligibility: read the conditions, all of them
Eligibility rules are where most applications fail, and the failure is usually avoidable: the applicant did not read a condition that was printed on the official page all along. Common conditions include the type of home — some schemes exclude flats, or homes above a certain size; the type of heating you already have; the energy performance rating of the property; the household income; whether you own the home or rent it; and whether the work has already started. That last one catches people out: many schemes only fund work that has not yet begun, and starting the work before approval can disqualify you entirely.
Read the conditions as a checklist, not as a description. Go through them one by one and mark each as met, not met, or unknown. Anything marked unknown needs an answer before you spend — from the scheme administrator, not from the installer. An installer has a reason to tell you that you qualify; the administrator is the only party whose answer counts.
Expiry and funding limits
Two dates matter on any scheme: the closing date and the funding limit. The closing date is the date applications stop being accepted. The funding limit is the total amount of money the scheme has, and a scheme can close early when the money runs out — which is common for popular schemes. A page that says "open until December" may also say "subject to funding", and those two statements together mean the real closing date is whichever comes first.
That is why this guide gives no dates. A date printed here could already be wrong by the time you read it, and acting on a wrong date is how people pay deposits for work they assumed was funded. The check is simple and it is yours to do: open the official scheme page, find the closing date and any funding note, and write them down with the date you checked. If the page has no date at all, treat the scheme as unverified and contact the administrator to ask.
Also check what happens if the scheme changes while your application is in progress. Some schemes honour applications already submitted; others do not. And check whether the scheme requires you to use an approved installer — many do — because a quote from an installer who is not on the scheme's list may not be eligible, however good the price.
How a grant changes payback
A grant changes the payback of a job in direct proportion to how much of the cost it covers, because payback is the cost you actually pay divided by the annual saving. That is the whole calculation, and it is worth doing with your own numbers before you decide anything. The insulation payback checker does this calculation with your quote and your estimated saving; the worked example below shows the method. One thing the simple calculation does not capture is timing: if the scheme pays as a rebate after the work, you pay the full cost first and get the money back later, so you need the cash up front.
Worked example: how a grant changes payback
This example uses invented example numbers, labelled as such, to show the method. It is not a promise of any grant amount or saving. Suppose you get a quote of £2,000 for cavity wall insulation, and your installer estimates — in writing — that it would save £200 a year on your heating bill at your current energy rate. Without any grant, simple payback is £2,000 ÷ £200 per year = 10 years. Now suppose a grant — an example grant, not a real scheme — covered £1,000 of the cost. The cost to you would be £2,000 − £1,000 = £1,000, and the payback would be £1,000 ÷ £200 per year = 5 years. The grant halved the cost, so it halved the payback.
FORMULA: payback with a grant (years) = (installed cost − grant amount) ÷ estimated annual saving; all figures your own, in the same currency
Result: without the example grant, £2,000 ÷ £200/year = 10 years; with the example £1,000 grant, £1,000 ÷ £200/year = 5 years. Replace the quote, the saving, and the grant with your own figures — your written quote, your estimated saving at the energy rate on your bill, and the amount stated on the official scheme page — and run them through the payback checker. A grant that looks large can still leave a long payback if the saving is small, and a small grant can transform a job with a large saving.
| Check | What to look for | Where to look |
|---|---|---|
| Scheme exists | Named scheme for your job, your country, your area | Official government energy pages |
| You are eligible | Every condition met: home type, income, heating, tenure | Eligibility section of the official scheme page |
| Scheme is open | Closing date and any funding limit, checked today | Official scheme page, dated the day you checked |
| How it pays | Discount, rebate after work, or voucher — and when | Official scheme page or the administrator |
| Approved installer | Your installer is on the scheme's list | Scheme's installer list or administrator |
| Work not started | Scheme does not exclude work already begun | Scheme terms, before you agree any work |
Red flags: when to walk away
A genuine scheme is administered by a government body or an authorised administrator, published on an official page, and free to apply for. Be suspicious of any of the following. An installer who pressures you to sign today because "the grant ends tomorrow" — check the official page yourself; the deadline is either there or it is not. A company that charges you a fee to apply for a grant — official schemes do not charge application fees through installers. A quote that is far above other quotes for the same work, justified by "the grant covers it" — the grant covers a stated amount, and an inflated price eats the benefit. A scheme you can only read about on the installer's own website, with no official page anywhere — if the administrator cannot be found, the scheme cannot be verified.
What to do next
Work in this order. First, decide which job you want, using the whole-home energy audit and the payback ranking in what insulation pays back first. Second, find the official scheme page for your country — the resources page gathers the official bodies named in this guide — and check the four things in this guide: existence, eligibility, expiry, and how it pays. Third, get written quotes from approved installers, and run each one through the payback checker twice — once at full price, once with the grant — so you can see exactly what the grant is worth to you. Fourth, apply, wait for approval if the scheme requires it, and only then agree the work. And remember that the energy rate you pay shapes every saving estimate: our guide to energy tariffs explained will help you check whether you are on the right deal before you spend on the fabric of the house.
Frequently asked questions
Why does this guide not list any grants?
Because schemes change too fast to list safely. They open, close, change eligibility rules, and run out of funding, sometimes with little notice. A list printed here would be out of date before you read it, and an out-of-date amount could shape a spending decision. This guide teaches you how to find the official scheme page for your country instead, so the information you act on is current.
How do I know if I am eligible for a grant?
Read the eligibility conditions on the official scheme page, one by one, as a checklist. Common conditions cover your home type, your heating system, your household income, and whether you own or rent. Anything you cannot confirm yourself, ask the scheme administrator — not the installer, whose answer does not count.
Can a grant run out before its closing date?
Yes. Many schemes have a funding limit as well as a closing date, and they close early when the money runs out. Check both the closing date and any funding note on the official page, and write down the date you checked.
How does a grant change the payback on insulation?
It shortens the payback in proportion to how much of the cost it covers. Divide the cost you actually pay — the quote minus the grant — by the estimated annual saving. The worked example in this guide shows the calculation with labelled example figures; run your own numbers through the payback checker.
Do I need my landlord's permission to claim a grant as a renter?
Many schemes are for homeowners only, and those that include tenants usually need the landlord's written permission, because the work changes the property. Check the scheme's own rules, and talk to your landlord — a grant-funded improvement benefits them as well as you.
Sources
- UK Ofgem price cap, October–December 2026 (announced 26 August 2026, as reported 5 November 2026): electricity 26.32p/kWh, standing charge 54.83p/day; gas 7.97p/kWh, standing charge 29.68p/day; typical dual-fuel household £1,723/year on direct debit — the cap limits unit rates, not your total bill.
- US Department of Energy — guidance on energy efficiency incentives and rebates, and on checking eligibility with state energy offices (as cited at build, 5 November 2026).
- ENERGY STAR — heating and cooling account for roughly half of a typical home's energy bill (figure as cited at build, 5 November 2026).
- Official scheme pages — this guide deliberately cites no individual scheme: schemes change frequently, and the authoritative source for any scheme is its own official page, checked on the day you apply.
Related: run your own numbers in the insulation payback checker, then read what insulation pays back first and energy tariffs explained before you spend.