IN · Solar

Solar quotes in Carmel, IN.

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7.5 kW
Average system size
$2.90/W
Average cost (USD)
12 yrs
Average payback
80+
Local installers

Why solar in Carmel

Two Indiana solar benefits survived everything that happened to net metering, and both arrive as absences rather than payments. Solar equipment is exempt from the 7 percent state sales tax, so the tax is simply not in your price. And the added value of a residential solar system is exempt from property tax assessment, so installing it should not raise what you are assessed. Neither appears as a line item, which is exactly why they get left out of a homeowner calculation.

The 7 percent that should not be in your quote

Indiana exempts solar panels, inverters, mounting hardware and other qualifying system components from the 7 percent state sales tax.

On a residential system that is a substantial figure, and it is entirely automatic. There is no form to file and no application to make.

Because it is automatic, the only way to verify it is to look for something that is not there. Ask directly whether the quoted price includes any Indiana sales tax.

If it does, ask which component it was applied to and why. There may be a legitimate answer for an item outside the exemption, but it should be an explanation rather than a shrug, and it should be resolved before you compare quotes.

The assessment that should not rise

Indiana exempts the added value of a residential solar system from property tax assessment. Your home is worth more with solar on it and the assessment for the array does not follow.

That matters more in a place like Carmel, where property values are high enough that an assessment increase would compound meaningfully across the life of a system.

It is also the item most often omitted from a savings model, because nothing is deposited and no document arrives to mark it happening.

Ask whether your installer model accounts for it, and confirm with your county assessor what filing, if any, is required locally. Assessment procedures are administered at county level, so the paperwork question has a local answer.

Why these matter more than they used to

When the 30 percent federal residential credit existed, these two exemptions were minor items in a much larger stack. Section 25D expired for property placed in service after December 31, 2025, and Indiana has no state income tax credit for solar.

At the same time net metering closed for new customers, replaced by the Excess Distributed Generation credit at roughly 70 to 80 percent below the retail rate.

So the exemptions have gone from footnotes to being a meaningful share of what an Indiana buyer actually receives, purely because everything around them shrank.

That is an argument for confirming both explicitly rather than assuming they are handled. A quote that quietly includes sales tax, or a model that shows an assessment increase, is now a larger error relative to the total than it once was.

Building the number from what Indiana still offers

The 30 percent federal Residential Clean Energy Credit under Section 25D expired for property placed in service after December 31, 2025, so a cash or loan purchase in Carmel receives no federal tax credit, and Indiana has no state income tax credit for solar.

Section 48E survives at 30 percent for third-party owners under leases and power purchase agreements, so ask what a provider claims and what reaches you in the rate.

What exists is the 7 percent sales tax exemption, the property tax exemption on added value, full retail value for electricity consumed as it is generated, and the Excess Distributed Generation credit for exports.

Ask that both exemptions be shown explicitly in the projection rather than folded into a net figure, and confirm the county filing requirement with your assessor.

Incentives & rebates

Net metering: Net metering closed; EDG credit at 125% of wholesale

Indiana closed net metering to new solar customers under Senate Enrolled Act 309, no later than July 1, 2022. New residential systems instead receive the Excess Distributed Generation credit, which the Indiana Utility Regulatory Commission sets at the average wholesale cost of electricity from the prior year plus 25 percent. That has produced a credit roughly 70 to 80 percent below the retail rate, so an exported kilowatt hour is worth a small fraction of one you consume yourself. A second change compounds the first. The Indiana Supreme Court held that a utility may measure excess generation instantaneously rather than netting across a billing period, on the reasoning that the statute does not direct utilities on how often the measurement must be made. Under instantaneous netting a household pays the full retail rate for everything it draws from the grid at any moment while everything it sends to the grid earns only the Excess Distributed Generation rate, with no monthly offset in between. The practical consequences are large. A system sized to annual consumption will export a great deal of its midday output at the low rate, so a smaller system matched to daytime load frequently returns better. Shifting flexible loads into daylight converts low-value exports into full-value offsets at no cost, and storage carries more weight here than the national conversation suggests. Existing customers were grandfathered: systems installed before 2018 keep full net metering until July 1, 2047, and those installed between the start of 2018 and the close of the programme until July 1, 2032.

How payback works in Indiana

System cost
$21,750
Estimated net cost
$21,750
Estimated payback
~13.4 years
25-year net savings
~$18,750

These figures are illustrative; your actual quote reflects your roof, sun exposure, and local utility rates.

Frequently asked questions

Do I pay sales tax on solar in Indiana?
No. Indiana exempts solar panels, inverters, mounting hardware and other qualifying components from the 7 percent state sales tax. It is automatic, so verify it by asking whether the quoted price includes any Indiana sales tax.
Will solar raise my property taxes?
It should not. Indiana exempts the added value of a residential solar system from property tax assessment. If a savings model shows an assessment increase attributable to the array, that is a modelling error.
Do I need to file anything for the property tax exemption?
Assessment procedures are administered at county level, so confirm with your own county assessor what filing, if any, is required and by when. That is a single call and it protects the exemption.
Why do these exemptions matter more now?
Because everything around them shrank. The federal residential credit ended after 2025, Indiana has no state income tax credit, and net metering closed, so the exemptions are now a meaningful share of what an Indiana buyer actually receives.

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