Why Was Ameresco Stock Up on Aug 5, 2026?

Ameresco beat Q2 2026 estimates on both lines: revenue of $515.46 million against a $462.95 million estimate, and adjusted EPS of $0.20 against a $0.16 estimate. The company also raised full-year 2026 adjusted EPS guidance to $1.15-$1.35 from a prior $1.06-$1.28 range. Shares rose 8.549% on the day.

A guidance raise built on tax-credit policy, not just demand

This raise has a specific, named mechanism: management said it reflects improved visibility into investment tax credits expected to be realized in 2026, tied to the company's planned transition to a new accounting policy for transferable tax credits in the second half of the year. Ameresco develops and finances energy-efficiency and renewable-energy infrastructure projects that depend heavily on federal tax-credit policy and its accounting treatment -- greater clarity on how those credits flow through the P&L is a real, structural change to earnings visibility, not a one-time item.

The demand side: data centers, not just public-sector energy contracts

Ameresco received $1.8 billion in new awards during the quarter, and $1.2 billion of that -- two-thirds — was tied specifically to data-center projects. Total backlog reached a record $6.73 billion, up 32% year over year, with five data-center projects now sitting in the awarded project backlog. Ameresco's traditional business has been energy-efficiency retrofits and renewable projects for government and utility customers; data-center energy infrastructure is a newer, faster-growing demand source riding the broader AI infrastructure buildout, and this quarter is the clearest evidence yet that it is becoming a material share of the award pipeline rather than a marginal one.

What to watch

Whether the data-center share of new awards keeps climbing over the next two quarters is the number that shows whether this was a single large project landing at once, or the start of a durable shift in Ameresco's project mix toward AI-infrastructure-driven energy demand.