Boulder, CO Solar Panels

Colorado provides a full state sales tax exemption on the purchase of qualifying solar energy equipment, meaning homeowners in Boulder pay zero Colorado state sales tax (2.9%) on their solar installation. Qualifying components include solar modules, inverters, mounting racks and structures, wiring, control systems, and other components directly related to the solar installation.

This exemption is applied automatically at the point of purchase — you don’t need to file a separate application. On a typical Colorado residential solar installation costing $25,000–$35,000, the state sales tax exemption saves approximately $725–$1,015 in upfront costs.

Note that this exemption covers Colorado state sales tax only. Local city and county sales taxes may still apply depending on your municipality, though some localities (such as the City of Boulder) offer additional local tax rebates on top of the state exemption.

Colorado law requires all investor-owned utilities — primarily Xcel Energy and Black Hills Energy — to offer net metering to residential solar customers. Under this policy, you receive a full retail-rate credit for every kilowatt-hour your solar system exports to the grid, the same rate you pay to purchase electricity. This is one of the strongest net metering policies in the country. Municipal utilities and electric cooperatives are not required to offer net metering, but most larger ones do.

Xcel Energy, which serves Boulder, allows net-metered solar systems sized up to 200% of your annual electricity usage. Excess credits roll forward automatically to the next billing cycle. At the end of each calendar year, customers can choose to roll remaining credits into the next year indefinitely, or request a cash payout at Xcel’s Average Hourly Incremental Cost rate. Customers can also opt to receive kWh-based credits applied to future bills instead of cash.

Locking in net metering now is advantageous because homeowners who go solar today lock in current policy terms for the life of their interconnection agreement. States like California have already moved away from full retail crediting, and waiting carries regulatory risk on top of paying higher electricity bills in the meantime.

Xcel Energy’s Solar*Rewards Program provides upfront solar rebates to eligible residential customers in Colorado, including Boulder. The 2026 program opened on May 21, 2026 with a renewed incentive budget. Customers who qualify as Income Qualified or residing in Disproportionately Impacted (DI) Communities can receive an upfront rebate of $1 per watt of installed solar capacity, up to 10 kW AC. For a typical 5 kW system, this equals a $5,000 rebate — a significant reduction in upfront costs.

In addition to the upfront rebate, Solar*Rewards also offers a production incentive of approximately $0.02 per kWh generated by your solar system, paid over a 20-year contract term. Enrolling sooner locks in the current rate for the full contract period, as this per-kWh rate may decrease in future program years.

To apply, contact Xcel Energy or visit their official website before installation, as pre-approval is typically required. Eligibility is based on income relative to Area Median Income (AMI) or residence in a designated Disproportionately Impacted community within Xcel’s Colorado service territory.

Xcel Energy’s Renewable Battery Connect Program provides upfront rebates for qualifying home battery storage systems. The 2026 program opened on May 21, 2026 with a renewed incentive budget. Standard customers receive $350 per kW of battery capacity, up to $5,000 per application. Income-qualified customers and those residing in Disproportionately Impacted (DI) communities receive an enhanced rebate of $800 per kW, up to 75% of the equipment-only cost. Eligible battery models include all Tesla Powerwall models and all current Enphase models.

In addition to the upfront rebate, enrolled customers receive an ongoing payment of $100 per year for up to five years in exchange for allowing Xcel Energy to dispatch stored energy back to the grid during peak demand events — a virtual power plant arrangement that benefits both the homeowner and the broader grid.

Important note: The 2025 program budget was fully exhausted and the funding cycle closed in February 2026. The 2026 program has since reopened with new funding as of May 21, 2026. Pre-approval is required before installation, so contact Xcel Energy or visit their official website to confirm current availability and apply before your installation date.

Xcel Energy’s Public Safety Power Shutoff (PSPS) Battery Rebate provides up to $10,000 for qualifying customers who install a home battery storage system. This program is specifically designed to protect vulnerable customers who depend on electricity for life-sustaining medical equipment and who live in areas prone to Public Safety Power Shutoffs due to high wildfire risk.

To qualify, homeowners must be enrolled in Xcel Energy’s Medical Certification Program or the Colorado Medical Exception Program, and must reside in a Tier 2 or Tier 3 wildfire risk zone within Xcel’s Colorado service territory. This rebate can be stacked with other Xcel battery incentives where eligible, making it one of the most valuable battery rebates available to qualifying customers.

Contact Xcel Energy directly to confirm your eligibility, verify your wildfire risk tier, and obtain pre-approval before purchasing or installing a battery system. As with all Xcel rebate programs, pre-approval before installation is strongly recommended.

The City of Boulder’s Solar Rebate Ordinance, enacted in 2008, provides a rebate of approximately 15% of the city sales and use tax paid on materials and permits for a solar installation. This rebate is available to all Boulder solar customers — not just income-qualified residents — and is separate from Colorado’s statewide 2.9% sales tax exemption. Boulder’s rebate specifically addresses the city’s local sales and use tax, which the state exemption does not cover.

To receive the rebate, you must file a rebate application with the City of Boulder within 12 months of the city’s final inspection of your solar system. Be sure to retain all receipts for materials and permits, as these will be required to document the amount of local sales and use tax paid.

This rebate can be stacked with Colorado’s statewide sales tax exemption, the property tax exemption, and any applicable utility rebates, making Boulder one of the more incentive-rich cities in Colorado for residential solar installations.

The City of Boulder’s Income-Qualified Solar Grant Program provides financial assistance to income-qualified residents and nonprofit organizations installing new rooftop solar systems. The grant is valued at $1 per watt of installed solar capacity, up to a maximum of $8,000 or 50% of the total system cost, whichever is lower. For a 5 kW system costing $15,000, for example, the grant could provide $5,000 — significantly reducing the out-of-pocket cost of going solar.

This grant is specifically targeted at lower-income Boulder residents and nonprofits who may face greater financial barriers to solar adoption. Eligibility is based on household income; contact the City of Boulder directly to confirm income thresholds and required documentation.

This grant can be combined with the City of Boulder’s Sales and Use Tax Rebate, Colorado’s statewide sales tax exemption, the property tax exemption, and applicable utility rebates, making it possible for income-qualified Boulder residents to dramatically reduce the net cost of a solar installation.

Tesla’s Next Million Powerwall 3 Rebate Program offers homeowners $500 back per Powerwall 3 unit installed, covering both the Powerwall 3 and Powerwall 3 Expansion units. The maximum rebate is $1,000 per address (limited to two units). This manufacturer rebate is available directly from Tesla and can be stacked with utility and state incentives.

To qualify, the sale must be finalized and the rebate registered by June 30, 2026, and the installation must be completed by December 31, 2026. Missing either deadline will disqualify the installation from the rebate, so homeowners should plan their purchase and installation timeline carefully.

This rebate is particularly valuable when combined with Colorado’s 10% Residential Energy Storage Tax Credit (DR-1307), Xcel Energy’s Renewable Battery Connect Program, and any applicable local city rebates — all of which can be layered together to significantly reduce the net cost of a Powerwall 3 installation in Colorado.

The Colorado Residential Energy Upgrade (RENU) Loan Program is administered through the Colorado Clean Energy Fund in partnership with local credit unions across the state. It provides affordable financing for homeowners who want to install solar panels, battery storage, or other qualifying clean energy improvements — without requiring collateral or hidden fees.

Because the loan is administered through local credit unions, borrowers benefit from working with community-based lenders who are familiar with Colorado’s clean energy landscape. Loan rates are competitive and designed to make solar and storage accessible to homeowners who may not have the upfront capital to pay cash for a system.

To apply, homeowners should visit the Colorado Clean Energy Fund’s website to find a participating credit union in their area and begin the application process. The RENU Loan can be used in conjunction with all available rebates and tax credits — meaning you can finance the full system cost and then apply rebates and credits to pay down the loan balance, further reducing your out-of-pocket costs.