The Atlantic chapter of the Sierra Club, an environmental group opposed to hydrofracking, endorsed on Monday the Democratic primary campaign of Zephyr Teachout — a development her campaign said was a sign of momentum following the backing of the National Organization of Women.

“I am so proud to have won the support of the nation’s largest and most influential grassroots environmental organization. We have a shared vision for a New York where those who oppose hydrofracking and fossil fuel infrastructure have their voices heard in Albany. We are excited to work together to move New York towards renewable sources of energy to build our economy and protect public health,” Teachout said in a statement.

Of course, the state currently doesn’t allow for high-volume hydrofracking — a de facto ban that has garnered vocal critics on Gov. Andrew Cuomo’s right flank.

The Department of Health’s review of the health impacts of hydorfracking has shown little sign of concluding in the near future.

Nevertheless, the Sierra Club indicated the endorsement of Teachout is about more than just fracking.

“The New York Chapter of the Sierra Club enthusiastically endorses Zephyr Teachout for Governor of the State of New York. Ms. Teachout is an articulate, engaging leader who will play a critical role in the resurgence of the Empire State, with a vision to rebuild New York through a robust clean energy economy and reinvigorate our democracy so that it works for everyone — not just the wealthy and well-connected” said Jeff Bohner, Chair of the Sierra Club Atlantic Chapter.

He added:

“Teachout’s commitment to banning fracking and rooting out corruption in Albany is a welcome antidote to Albany’s longstanding political dysfunction that will earn her a significant following before the September 9th primary. For too long in New York, toxic political money from big polluting industries has sunk major initiatives to protect our air, our water, and our families. Zephyr Teachout will change that dynamic by putting the interests of the public ahead of big campaign donors, and that is why the Sierra Club will fight to elect her Governor.”