Do I Have to Pay Sales Tax on Solar Panels in Rhode Island?
Wondering whether you pay sales tax on solar panels in Rhode Island? The short answer is “no” for the solar panels themselves.
Rhode Island exempts solar panels and other solar equipment from its 7% sales tax, but not every cost associated with a solar installation qualifies.
This guide breaks down what Rhode Island General Laws exempt from sales tax, how that exemption applies to solar projects, and which equipment or costs may still be taxable, so you know what to expect before signing a contract.
How Rhode Island’s Solar Sales Tax Exemption Works
Rhode Island’s solar sales tax exemption comes from Rhode Island General Laws §44-18-30(57), a section of the state’s sales and use tax law titled “Renewable energy products.” This law lists specific categories of solar, wind, and geothermal equipment that are exempt from the state’s 7% sales and use tax when sold in Rhode Island.
Homeowners don’t typically apply separately for the exemption. The installer handles the tax treatment of qualifying equipment when purchasing and pricing the system.
Does the Exemption Work Differently for Residential and Commercial Solar?
In terms of the renewable energy products exemption under §44-18-30(57), Rhode Island does not distinguish between residential and commercial customers. Qualifying equipment can receive the same exemption whether it is purchased for a residential or commercial solar project.
The renewable energy products exemption applies to qualifying equipment regardless of whether it is purchased for a residential (i.e., homeowner installing rooftop panels) or commercial solar project.”
Commercial projects can involve additional tax considerations beyond §44-18-30(57). Depending on the equipment and how it is used, other Rhode Island tax exemptions may also apply.
This is separate from Rhode Island’s property tax rules for renewable energy systems, which follow different requirements.
What Solar Equipment Is Exempt From Sales Tax in Rhode Island?
Rhode Island’s renewable energy products law lists exempt equipment by category.
For a typical solar electric (photovoltaic) installation, four categories matter most: Solar panels and photovoltaic modules, solar inverters, mounting and racking equipment, and monitoring and control equipment.
Solar Panels and Photovoltaic Modules
The law exempts “solar photovoltaic modules or panels, or any module or panel that generates electricity from light.”
In plain terms, this covers the solar panels themselves. This is the most straightforward part of the exemption and applies to essentially any PV panel used to generate electricity from sunlight.
Qualifying Solar Inverters
The exemption also covers DC-to-AC inverters that interconnect with utility power lines, which involves inverter equipment used in most standard installations.
Inverters convert the DC electricity your panels generate into the AC electricity your home or business uses and are a required component of any grid-connected solar system.
Qualifying Mounting and Racking Equipment
Manufactured mounting racks and ballast pans used to install solar panels are also exempt.
The wording of the law matters here: it specifically covers pre-made, manufactured racking products, not raw materials that could be fabricated into a rack.
If a contractor built custom mounting hardware out of general-purpose metal stock rather than installing a manufacturer’s racking system, that raw material wouldn’t qualify for the same exemption.
Qualifying Monitoring and Control Equipment
Monitoring and control equipment is exempt only under specific conditions: it must be specified or supplied by the solar system manufacturer, or required by law or regulation for that system.
The exemption specifically excludes pumps, fans, plumbing, or electrical fixtures, unless those items are shipped from the manufacturer already attached to, or built into, one of the other exempt items on the list.
The same section of law also covers other renewable energy equipment outside of solar PV, including solar thermal collectors, geothermal heat pumps, wind turbines, and solar storage tanks used in a solar domestic hot water or solar space heating system.
A solar thermal storage tank used to store heated water as part of a solar water heating or solar space-heating system is exempt. This refers specifically to thermal storage, not a battery energy storage system.
How the Sales Tax Exemption Can Affect Your Solar Project Cost
Because Rhode Island’s state sales tax rate is 7%, exempting the equipment above can lower the cost of your solar project. However, the exemption from the 7% sales tax only applies to the cost of the qualifying equipment, not your entire project price.
Most residential and commercial solar quotes include line items beyond the panels, inverter, and racking, such as electrical work, permitting, structural components, and in many cases, battery storage. Not everything on that list is guaranteed to fall under Rhode Island’s renewable energy products exemption.
When comparing quotes, ask your installer which line items reflect the sales tax exemption and which ones do not. If you need help calculating your project cost, contact us for a free estimate.
How Is the Rhode Island Solar Sales Tax Exemption Applied?
In practice, homeowners typically don’t need to handle the exemption themselves. The solar contractor handles the tax treatment when purchasing qualifying equipment and pricing the project.
Rhode Island contractors generally pay sales or use tax on materials they purchase for a project unless a specific exemption applies. Qualifying solar equipment listed under Rhode Island General Laws §44-18-30(57) is exempt, while other materials and project costs may still be taxable. This means the exemption applies to specific qualifying equipment rather than automatically making the entire solar installation tax exempt.
Installation labor is generally not subject to Rhode Island sales tax. When equipment is sold at retail with installation, separately stated installation charges are generally excluded from the taxable sales price under Rhode Island law.
For equipment or materials that fall outside the exempt list, such as general electrical supplies not shipped as part of a listed component, a contractor may still owe Rhode Island sales or use tax on those materials as part of doing business. Those costs may be reflected in the overall project price.
This applies the same way whether you’re a homeowner in Newport County or a business owner installing a commercial system: the exemption follows the equipment being purchased, not the type of property it’s installed on.
Sales Tax Exemption vs Other Rhode Island Solar Incentives
The sales tax exemption is only one of several Rhode Island solar incentives, and it works differently from most of the others.
Renewable Energy Fund (REF): A grant program administered by Rhode Island Commerce. Unlike the sales tax exemption, REF requires an application and depends on available program funding.
Renewable Energy Growth (REG) program: A performance-based program that compensates qualifying systems for the electricity they generate under a long-term tariff. Enrollment requirements and timing vary by project size. A project cannot participate in both REG and net metering.
Net metering: A utility billing arrangement that credits you for excess electricity your system sends back to the grid. This affects your ongoing electric bill, not your upfront purchase price.
Solar property tax exemption: Rhode Island has separate property tax rules for renewable energy systems. These rules differ from the sales tax exemption and can vary with the type of project and local rules. This is a different statute from the sales tax exemption.
The sales tax exemption stands apart because it is relatively straightforward: no separate homeowner application, no funding cap, and no enrollment deadline.
Why the Sales Tax Exemption Matters for Rhode Island Homeowners
Because qualifying equipment is exempt from Rhode Island’s 7% sales tax, the exemption can help reduce the upfront cost of your solar project.
For homeowners considering the total cost of a solar installation, the exemption provides a direct reduction in sales tax on qualifying equipment.
How Newport Solar Helps You Understand Solar Costs and Incentives
Solar incentives in Rhode Island come in several forms: the sales tax exemption, REF, REG, net metering, and the property tax exemption.
When our team at Newport Solar prepares a project proposal, we account for the applicable Rhode Island sales tax treatment so customers can understand how it applies to their project.
We also stay current on legislative changes that may affect these incentives, so we can help you understand the latest options available.
If you’re planning to install solar and want a clear quote, get in touch with us for a free estimate.
Frequently Asked Questions
Are all solar installation costs tax-exempt?
No. Rhode Island’s exemption under §44-18-30(57) specifically covers certain types of solar equipment, including solar panels, qualifying DC-to-AC inverters, manufactured mounting racks and ballast pans, and monitoring or control equipment that’s manufacturer-specified or required by law.
Other costs, such as general building materials not shipped as part of an exempt component, are not automatically covered.
Currently, battery energy storage systems are not listed among the products expressly exempt under §44-18-30(57).
What is Rhode Island’s normal sales tax rate?
Rhode Island’s general sales and use tax rate is 7%. For solar projects, this rate may apply to equipment or materials that do not qualify for the renewable energy products exemption.
Is solar installation labor subject to sales tax in Rhode Island?
Generally, installation labor is not subject to Rhode Island sales tax. When equipment is sold at retail with installation, separately stated installation charges are generally excluded from the taxable sales price. Contractors may still owe tax on materials or supplies that do not qualify for an exemption, and those costs may be reflected in the project price.
Is the solar sales tax exemption the same as a solar tax credit?
No. The sales tax exemption reduces what you pay on qualifying equipment at the time of purchase and is not a credit applied to your income taxes.
The federal Residential Clean Energy Credit under Section 25D is no longer available for residential clean-energy expenditures made after December 31, 2025, so homeowners generally cannot claim the former 30% federal residential solar credit for expenditures made in 2026.
Rhode Island’s own 2026 residential solar guide also reflects that direct homeowner purchasers can no longer personally claim the residential ITC beginning in 2026.
https://energy.ri.gov/sites/g/files/xkgbur741/files/2026-04/RIOER-Guide-ResSolar-booklet-2026.pdf
