AvalonBay and Parity Win 2026 DOE Better Project Award with Software-Driven Building Decarbonisation

AvalonBay and Parity have been awarded the 2026 Better Project Award by the United States Department of Energy for delivering portfolio-scale decarbonisation across legacy multifamily buildings using a software-only approach. The recognition validates a model that achieves significant emission reductions and cost savings in older steam-heated buildings without major capital spending or equipment replacement. The award highlights a path forward for one of the most challenging segments of the United States built environment.

 

The Scale of the Decarbonisation Challenge

 

New York's multifamily sector faces mounting pressure under Local Law 97, with roughly 18,000 of the approximately 27,000 covered properties needing to deliver substantial emissions reductions in the coming years. More than half of these buildings were constructed before 1940, making them among the hardest and most expensive properties to decarbonise through conventional methods. Steam-heated buildings in particular have been viewed as resistant to efficient retrofitting because of the complexity of their distribution systems and the difficulty of installing modern controls without disrupting operations.

The traditional decarbonisation playbook for these buildings involves significant capital programmes covering equipment replacement, envelope upgrades and tenant disruption. The cost and complexity of such programmes has slowed compliance with Local Law 97 and similar building emissions regulations across other United States cities. Software-led optimisation offers a fundamentally different pathway that delivers meaningful reductions without requiring the same capital outlay or operational disruption.

 

The Parity Platform and Its Application

 

Parity's platform is a remote, software-based HVAC optimisation system designed to deliver meaningful efficiency improvements in legacy buildings without touching equipment or disrupting resident comfort. The platform uses real-time data analysis and control logic to optimise existing HVAC and steam systems, extracting performance gains from infrastructure that was previously operating below its potential. By focusing on operational optimisation rather than physical retrofits, the approach sidesteps the capital and disruption barriers that have constrained legacy building decarbonisation.

The model is particularly well-suited to multifamily portfolios where consistent application across many buildings can compound benefits while keeping deployment costs manageable. Because the platform operates remotely, it can be implemented and scaled quickly across geographically distributed portfolios without requiring on-site engineering teams for each building. This scalability is critical for institutional owners managing hundreds or thousands of properties across multiple cities.

 

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Verified Outcomes from the AvalonBay Deployment

 

The deployment across AvalonBay's New York City portfolio delivered $540,000 in verified utility cost savings and $290,000 in projected Local Law 97 fine mitigation, two outcomes that directly improve financial performance for the property owner. Demand response revenue added a further $30,000, demonstrating that optimised buildings can also generate income by participating in grid services markets. The combination of cost savings, fine avoidance and new revenue creates a multi-layered financial case that strengthens the broader economics of software-led decarbonisation.

On the emissions side, the deployment cut more than 1,000 tonnes of carbon dioxide across the participating buildings, a meaningful reduction for a programme that involved no equipment replacement. The savings exceeded Parity's original guarantee by approximately double, reinforcing the credibility of the platform's performance projections. This level of overperformance against contracted commitments is particularly important in a market where many efficiency programmes have historically underdelivered relative to initial promises.

 

Strategic Significance for AvalonBay

 

For AvalonBay, one of the largest multifamily real estate investment trusts in the United States, the results validate a decarbonisation pathway that aligns with the operational realities of large-scale portfolio management. The company has now expanded the Parity platform from three buildings to its entire New York City portfolio, with planned rollouts to Brooklyn, Boston and Washington DC following the initial success. This expansion demonstrates that the model has moved beyond proof of concept into broader operational deployment.

The approach also supports AvalonBay's ability to meet evolving regulatory expectations while preserving capital for other strategic investments. Avoiding large capital programmes for decarbonisation allows the REIT to deploy resources elsewhere across its portfolio, including new development and acquisitions. The combination of compliance achievement and capital efficiency makes the model particularly attractive for publicly listed property companies under pressure to balance climate performance with financial returns.

 

The Department of Energy Validation

 

The 2026 Better Project Award represents a significant external validation of the software-led decarbonisation approach. The recognition gives the model a level of credibility that supports broader adoption across the multifamily and broader commercial real estate sectors. Industry awards from federal agencies often serve as important signals for property owners evaluating new technologies, particularly in conservative segments such as legacy building operations.

The DOE recognition also positions Parity and AvalonBay as reference cases for other portfolio owners seeking to meet building emissions targets without major capital programmes. As more cities follow New York in implementing building performance standards, the demand for proven decarbonisation pathways is expected to rise sharply. Validation from an authoritative federal body strengthens the marketing position of both the technology provider and the property owner championing it.

 

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Implications for the Broader Built Environment

 

The wider significance of the AvalonBay and Parity collaboration lies in demonstrating that portfolio-scale decarbonisation in legacy buildings is possible through software alone, without hardware overhaul or resident disruption. This represents a fundamental shift in the economics of building decarbonisation, since the largest barrier to compliance with regulations such as Local Law 97 has been the capital cost of physical retrofits. Software solutions reduce that barrier dramatically and accelerate the speed at which portfolios can come into compliance.

The model is not specific to New York City, since legacy multifamily buildings face similar pressures in every major United States urban centre. Boston, Washington DC, Chicago and several West Coast cities have introduced or are considering building performance standards that mirror elements of Local Law 97. As these frameworks proliferate, the addressable market for software-led decarbonisation is expected to expand significantly, providing a substantial growth opportunity for technology providers operating in the space.

 

Outlook for Legacy Building Decarbonisation

 

The combination of regulatory pressure, capital constraints and proven software-based alternatives is reshaping how property owners approach building decarbonisation across the United States. Owners that can deliver compliance through operational optimisation rather than expensive retrofits will preserve capital flexibility while maintaining strong sustainability performance. This dynamic is expected to favour software-led approaches in the near term, particularly for older buildings where retrofit economics are most challenging.

Whether the Parity model can scale across the broader United States multifamily market will depend on continued performance against guarantees, expansion of platform capabilities and the trajectory of building performance regulation in additional cities. Sustained execution by partnerships such as AvalonBay and Parity establishes a credible template for how the built environment can decarbonise at the pace required by climate policy without requiring prohibitive capital programmes. The DOE award marks an important milestone in the broader adoption of this model.