Premium Installation of Solar Panels in Washington DC
Turn the District’s abundant sunlight into a powerful source of income and savings. Lock in your energy rates and join the clean energy revolution.
Your Local Experts for Solar Panels in Washington DC
Cosmo Solaris offers professional, turnkey solar services designed to help District homeowners maximize their financial returns
We understand the unique architectural and permitting requirements of DC, from historic row houses to modern rooftops, ensuring your system is optimized for performance and aesthetic appeal.
Lower Your Energy Expenses With Our Solar Experts
By switching to solar panels in Washington DC, you can virtually eliminate your reliance on the traditional grid.
Our high-efficiency systems allow you to tap into renewable energy that not only enhances your property value but also provides a “shield” against Pepco’s rising utility rates.
Why Choose Cosmo Solaris in the District?
Cosmo Solaris stands out by providing an integrated, in-house approach. We don’t just install hardware; we manage the entire ecosystem of your solar investment.
Our 174-person team handles everything from structural engineering to the complex DC SREC registration process.
Our DC-Specific Services Include:

Residential & Commercial Installation
Custom arrays designed for urban environments.

SREC Management
Helping you navigate DC's lucrative Solar Renewable Energy Credit market.

$0 Down Financing
Accessing clean energy without an upfront capital hurdle.
DC Solar Incentives: The Most Generous in the Nation
- Market-Leading SRECs: For every megawatt-hour your solar panels in Washington DC produce, you earn a credit (SREC) that can be sold for hundreds of dollars, creating a significant annual income stream.
- 1:1 Net Metering: Through Pepco, every kilowatt-hour of solar energy you send to the grid is credited back to you at the full retail rate.
- Property Tax Exemption: Adding solar panels in Washington DC increases your home’s equity, but the added value is 100% exempt from property taxes.
- Solar Rights Law: DC law protects your right to install solar, preventing HOAs from placing “unreasonable” restrictions on your system’s design or performance.
Frequently Asked Questions
Is Washington DC a good place to install solar panels?
Yes. DC offers strong sunlight, high electricity rates, and generous incentives like SRECs, making solar highly profitable and cost-effective.
What solar incentives are available in Washington DC?
Homeowners can benefit from the 30% federal tax credit, DC SRECs, and various efficiency rebates that significantly reduce installation costs.
Do solar panels increase home value in Washington DC?
Yes. Solar-equipped homes typically sell for more because of lower utility bills, improved energy efficiency, and long-term clean energy benefits.
How long does it take to install solar panels in Washington DC?
Most installations are completed within a few weeks, including design, permitting, installation, and final utility approval.
Does Cosmo Solaris handle the full solar process in Washington DC?
Yes. We manage design, permitting, installation, inspections, SREC setup, maintenance, and long-term customer support.
Does Cosmo Solaris use its own employees for DC installations?
Yes. Unlike many “sales-only” companies in the District, we have a dedicated in-house team of 174 professionals. This allows us to maintain strict quality control and provide the expert engineering needed for DC’s unique roof types and permitting processes.
How does Cosmo Solaris handle the SREC process for DC residents?
DC has the most valuable SREC market in the US. Our administrative team handles the entire registration process for you, ensuring your system is certified and linked to a broker so you can begin receiving payments for the clean energy your solar panels in Washington DC produce.