New York City is installing solar panels on the rooftops of 24 public schools by 2016 as part of the de Blasio administration's overall goal to reduce greenhouse gas emissions 80 percent by 2050.

"The fact is we need conservation, we need renewable energy, we need to cut emissions in every conceivable manner, new technology, we need all these pieces. But we must reach the goal," de Blasio said Monday announcing the new goal at the John F. Kennedy Educational Campus in the Bronx, which already has a rooftop solar installation.

Currently, there are nine city schools with rooftop solar panels. The city plans to invest $23 million in city funds and $5 million in state money to pay for the 24 new roofs. The city is conducting feasibility studies to select which schools to install the solar panels.

The administration's green building plan unveiled last week, One City, Built to Last, set a goal of installing solar panels on 300 city buildings over the next 10 years.

At the Kennedy Campus, the solar panels generate 5 percent of the facility's total energy, according to Emily Dean, the director of energy programs and strategy for the Department of Citywide Administrative Services.

There are 19 other city buildings currently with rooftop solar panels.

Asked whether solar panels would be coming soon to City Hall, the mayor did not throw shade on the idea, saying they plan to look at all city buildings.

“We’re going to do that first and foremost on buildings where it will make a functional difference,” de Blasio said adding, “there will be some cases where it’s important to do it symbolically, so that’s definitely an option.”