The agreement was the result of talks that began almost two years ago. Mr. Reicher and Ms. Hopper organized meetings with groups that included solar developers, the Nature Conservancy, the Association of Fish and Wildlife Agencies, the American Farmland Trust, the North American Indian Center of Boston and WE ACT for Environmental Justice.

Energy Secretary Jennifer M. Granholm participated in some of the discussions, though the federal government did not formally join the agreement. Ms. Granholm said the effort “helps set us on the path to not only achieve President Biden’s ambitious goals of 100 percent clean electricity by 2035 and conserve at least 30 percent of America’s lands and waters by 2030, but to do it right.”

The groups involved in the agreement pointed to a solar project on the site of a former coal mine in Kentucky as an example of the approach they hope to achieve across the country. Once completed, that project, called Starfire, will have the capacity to provide enough energy to meet the needs of 170,000 homes a year.

The electric truck maker Rivian is a partner in that project, which it hopes will help offset some of the energy used by the pickups and other vehicles it sells. The company worked with the Nature Conservancy and BrightNight, the developer. They settled on Starfire’s location after reviewing about 100 others, determining that by choosing a former coal mine the companies could avoid building on land that might be better used for other purposes like farming.

“What we are seeing here is a maturation in this conversation, away from that story of a clean energy versus the green community and conservation,” said Jessica Wilkinson, who leads the renewable energy team for North America at the Nature Conservancy. “Not every project is going to be a good project. We recognize there are going to be trade-offs. But there are projects that really can reduce conflict and go faster.”