Willdan Group, Inc. (NASDAQ:WLDN) announced today that it has been awarded a $27 million, three-year contract with the New York City Mayor's Office of Climate & Environmental Justice to redesign and implement the NYC Accelerator program. This program helps building owners and stakeholders reduce greenhouse gas emissions, comply with Local Law 97, and advance the City's sustainability and green jobs objectives.

Willdan has partnered with eight local firms, including Blenderbox, Bright Power, Cadence OneFive, Kinetic Communities Consulting (KC3), LIFE3, Steven Winter Associates, TYTHEdesign, and Urban Green Council. The redesign aims to shift the program's focus from building energy awareness to project implementation. This is an opportunity for Willdan and its team to leverage local relationships, support the growth of the City's workforce, and build on a long history of helping New York City businesses and residents improve their buildings and become more energy efficient.

This is the first time that Willdan has held this program. For more information on the NYC Accelerator program, visit accelerator.nyc.

About New York City Mayor's Office of Climate & Environmental Justice

The Mayor's Office of Climate & Environmental Justice works to protect New Yorkers from the impacts of climate change and extreme weather by creating and advancing policies, programs, and projects that secure the city, while making its critical infrastructure cleaner and more reliable. It strengthens defenses, tackles the sources of pollution, and provides resources to all New Yorkers so that local businesses, families, and communities can thrive in healthy and safe neighborhoods. Learn more at www.nyc.gov/climate.

About Willdan

Willdan is a nationwide provider of professional, technical, and consulting services to utilities, government agencies, and private industry. Willdan's service offerings span a broad set of complementary disciplines that include electric grid solutions, energy efficiency and sustainability, energy policy planning and advisory, engineering and planning, and municipal financial consulting. For additional information, visit Willdan's website at www.willdan.com or follow Willdan on LinkedIn and Facebook.

Forward-Looking Statements

Statements in this press release that are not purely historical are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. It is important to note that Willdan's actual results could differ materially from those in any such forward-looking statements. Factors that could cause actual results to differ materially include, but are not limited to, the risk factors listed from time to time in Willdan's reports filed with the Securities and Exchange Commission, including, but not limited to, the Annual Report on Form 10-K filed for the year ended January 2, 2026. Willdan cautions investors not to place undue reliance on the forward-looking statements contained in this press release. Willdan disclaims any obligation to, and does not undertake to, update or revise any forward-looking statements in this press release.

View source version on businesswire.com: https://www.businesswire.com/news/home/20260415435354/en/

Al Kaschalk

Vice President

310-922-5643

akaschalk@willdan.com

Willdan Wins $27 Million Contract to Redesign and Implement New York City Accelerator Program