After GRESB Day: The Pre-Funded Path to Better Building Performance and Stronger Assets
The GRESB results released earlier this month provide a snapshot of portfolio performance. For REIT leaders, the next question is how to create additional value from the buildings they already own without increasing capital spending.
On October 1, GRESB released the final 2026 Assessment results to participants and investors. For many REIT sustainability and asset management teams, it is the culmination of a year of data collection and validation. With U.S. equity REIT funds from operations (FFO) hitting a record $22.4 billion in Q2 2026, according to Nareit, owners have strong operating fundamentals to build on.
Energy is typically a building’s largest controllable operating expense, so energy efficiency is one of the most direct places to look. Many REITs that improve their GRESB scores year over year are finding that part of the gain comes from efficiency work that costs little or nothing to implement. This post looks at what is changing in GRESB, what progressive REITs are doing about it, and one route to lower energy use, lower emissions, and lower operating costs.
GRESB became a requirement without becoming a regulation
GRESB participation is driven by investor demand, not law. Pension funds, sovereign wealth funds and asset managers use GRESB scores to screen investments, open green financing, and benchmark operating efficiency against peers. For public and private real estate alike, it has become the common language for sustainability performance.
The same logic reaches the national retailers and portfolios that lease from REITs. Organizations with public net-zero goals use GRESB-style frameworks and green leases to share energy data, efficiency costs and savings with their landlords, so landlord data quality and collaboration increasingly shape tenant conversations.
What is different in the 2026 cycle
GRESB’s 2026 Real Estate Assessment scores embodied carbon for the first time, with the sharpest impact falling on development portfolios. The update also includes targeted indicator retirements and weight adjustments, while confirming a structural shift to asset-level upfront carbon reporting in 2027.
Certifications. Design/construction and operational certifications are separate indicators. Operational certifications carry the largest weight, so performance in existing buildings matters more than new-build credentials.
Asset-level reporting. A shift from portfolio-level to asset-level reporting of upfront carbon is slated for 2027.
Transparency for participants. GRESB added a Validation Findings Summary to the 2026 preliminary results, providing greater visibility into which responses could not be fully validated and why. A Standards Insights Methodology Report is also available in the participant portal for entities that submitted and received a Benchmark Report, showing how 2026 Standard changes would have affected 2025 submitted data.
The common thread: the benchmark is moving toward measured operating performance. That is good news for REITs that treat efficiency as an operating discipline rather than a reporting exercise.
What progressive REITs are doing differently
The REITs that improve year after year tend to treat GRESB as a year-round operating discipline, using assessment results to guide practical improvements across their portfolios. Four patterns show up repeatedly:
- They turn feedback into action. They use results, benchmark reports, and performance reviews to identify gaps and inform asset-level improvement plans
- They prioritize operational performance. They pursue operational certifications and improvements that demonstrate how buildings perform, not just how they were designed or constructed.
- They set measurable energy targets. Initiatives like the U.S. Department of Energy’s Better Buildings Challenge offer technical resources and recognition to help organizations improve building performance.
- They leverage external funding. Utility-funded efficiency programs, public resources, and green financing can help reduce operating costs and stretch capital budgets, leaving more funds available for revenue-generating investments.
That last practice presents a particularly compelling opportunity: improving building performance through utility-funded efficiency programs without adding significant capital costs.
The utility-funded lever: efficiency without capital
Setting a goal is easy. Reaching it without a capital request is harder, which is where utility-funded programs come in.
Virtual Commissioning® (VCx®) is one example: a utility-funded program that optimizes existing building controls. Energy advisors remotely analyze utility-provided smart-meter data to identify abnormal usage patterns and guide property or facility managers through low- and no-cost adjustments to existing systems and controls. No site visits, no hardware installs, no contracts, and no direct cost to the building owner. Power TakeOff delivers VCx with 30+ utility partners across North America and reports an average energy reduction of about 15% per participant, with results varying by facility. NAREIT featured this approach in a recent podcast.
A note on the funding mechanism: utilities fund these programs through ratepayer revenue, so asset owners and tenants may contribute indirectly through their utility bills. The cost is spread across the utility’s customer base rather than charged directly to an individual participating property. Where these programs are available, participation can help customers capture energy savings from services funded through the utility program.
The returns case: value creation that is already funded
For asset owners, the benefits extend beyond energy savings to operating income, asset value, risk management, and sustainability reporting.
- Lower consumption. Operational fixes cut energy use in buildings the REIT already owns.
- Better economics. Lower operating costs support NOI, or support tenant value and green lease conversations in net-leased assets. Smoother equipment run-time can also defer replacement spend.
- Lower risk. Less energy use means less exposure to utility cost volatility and a smaller emissions footprint to defend to investors and lenders.
- Stronger data. Verified reductions feed the energy and emissions indicators that GRESB and other frameworks evaluate — and that increasingly drive scores.
For national portfolios, scale adds a wrinkle. Assets sit across many utility territories, and each has its own programs. A coordinated approach, rather than asset-by-asset outreach, is what turns scattered savings into a portfolio-level trend line.
What it looks like in practice
A REIT-owned commercial office building offers a useful picture of how this works, and what it is worth. The REIT shared a utility account list for hundreds of assets, and Power TakeOff cross-referenced it with its utility interval meter database to flag buildings with unexpected usage spikes during the day and overnight. That is the coordinated approach in practice: one data handoff, hundreds of properties screened, and this building among those flagged.
Through VCx, this building has cut annual electricity use by nearly 25% with no capital investment. The results:
- $88,100 in annual NOI savings, achieved entirely through operational changes
- 881,000 kWh in annual electricity savings
- $1.25 million in increased property value, from those NOI savings capitalized at a 7% cap rate
These savings matter beyond the income statement. Meter-verified reductions strengthen the energy and emissions data used in sustainability reporting and can support relevant GRESB indicators.
The fixes were operational, not capital projects, and they came from a building the REIT already owned. Utility-funded interval data analysis flagged boilers running in mild weather and equipment that never set back overnight in summer. In virtual meetings, the building engineer adjusted the building management system to fix both, while maintaining occupant comfort. Ongoing monitoring keeps the savings in place rather than letting them end after one project.
The building is also expected to save an additional $13,200 a year in reduced maintenance and deferred capital replacement costs, on top of the NOI savings behind the valuation gain.
The lesson for REIT owners is that energy waste like this is easy to miss in a single asset and expensive to ignore across a portfolio. The same flag-fix-verify loop applies to the assets you own, and utility-funded services to identify these hidden cost-reduction opportunities may be available depending on territory and asset type.
Before the next reporting window
The 2026 GRESB portal opened April 1 and closed July 1. GRESB publishes its key dates in advance, so confirm the 2027 timeline as you plan. The months between results day and the next submission are when you actually earn scores. A few steps worth taking now:
- Review your Standards Insights Methodology Report in the participant portal and turn its findings into asset-level actions.
- Review your assets across utilities to identify which have funded efficiency programs — below is a list of some utilities that offer this funded service.
- Set or refresh a portfolio-wide energy intensity target, connect with technical experts and peers to improve energy performance, and explore resources such as the U.S. Department of Energy’s Better Buildings Challenge.
- Start data capture early, so the spring submission is validation rather than discovery.
Utility-funded programs are available in many regions, although eligibility varies by utility and asset type. Identify which properties in your portfolio may qualify and where operational improvements could reduce energy use and operating costs before the next GRESB cycle.
Learn more at https://powertakeoff.com/national-portfolios/
Bridget Bray is Director of Partnerships, where she leads the management of the company’s corporate partnerships with National Accounts and Commercial Real Estate owners and operators.
Utility programs that can help
Utility-sponsored virtual commissioning programs can reduce building energy use at no direct cost to the owner. Eligibility varies by utility. Below are programs across North America; check your territory to see what is available.