CarbonEnfo, a cleantech company focused on accelerating the transition to a zero-carbon economy, has launched a $4.5 million Security Token Offering (STO) for its $BRYTR token, available exclusively through tZERO’s blockchain-powered platform. The offering provides accredited U.S. investors with a 12% share of net revenue generated by Brytr’s aggregation and sale of residential and small business Solar Renewable Energy Certificates (SRECs).
The U.S. solar market suffers from a structural inefficiency: in 2026, an estimated 107 million MWh of clean energy will be generated, but 74% of SRECs from distributed residential and commercial systems—approximately $1.4 billion in value—remain inaccessible because individual owners lack the infrastructure to aggregate and sell their certificates. Brytr’s platform addresses this by integrating directly with leading inverter manufacturers such as Enphase, SolarEdge, Tesla, and SMA, which together represent a majority of the U.S. residential inverter market.
“There’s over a billion dollars in clean energy value being generated every year that never reaches a buyer, not because demand isn’t there, but because the infrastructure to unlock it simply didn’t exist until now,” said Mark Bell, CEO and co-founder of CarbonEnfo. “Brytr is that infrastructure, and the blockchain layer ensures every SREC a corporate buyer purchases is exactly what it claims to be, verified from the rooftop to the registry.”
The $BRYTR token entitles holders to 12% of Net Platform Revenue from every SREC sold, with distributions paid quarterly in USD stablecoin and a maximum cumulative distribution cap of 3X the initial token price of $1.00. The offering is structured under SEC Regulation D, Rule 506(c), with a minimum investment of $50,000 for accredited U.S. investors. Tokenization, according to tZERO CEO Alan Konevsky, “allows investors to engage with infrastructure assets that historically sat outside traditional investment channels,” adding that the offering “illustrates how regulated blockchain-based securities can help unlock new sources of value.”
The residential market is only part of the opportunity; typical small-scale commercial solar installations generate over 400 renewable energy credits per year—more than 34 times the output of an average home system. Brytr’s platform serves both markets, allowing homeowners and commercial operators to verify, bundle, and sell credits directly to corporate buyers. The offering reflects a broader shift toward investments tied to yield-bearing infrastructure assets, as major institutions explore digital infrastructure for assets like real estate and commodities.
CarbonEnfo received validation from Cox Enterprises, a strategic investor through its Cox Cleantech division, which partnered on a pilot program onboarding employees’ residential solar systems to the Brytr platform. The pilot confirmed strong adoption and proved the platform’s ability to verify and aggregate high-quality renewable energy credits. Accredited U.S. investors can access offering documents and participate through tZERO’s brokerage platform.
