The nation’s largest power grid operator is counting on a revamped review process to accelerate the addition of new generating capacity. It's expected to not only help meet an expected data-center-driven 30-GW increase in demand across its service area by 2030, but also quell growing criticism over its management of the wholesale electricity market in its large and diverse region.

PJM Interconnection LLC announced April 29 in advance of an annual meeting that its reopened queue of proposed new interconnections includes applications from 811 projects totaling 220 GW. Most proposed projects are for traditional sources such as coal, methane, natural gas, nuclear and hydro power, with battery storage and renewables also in the mix.…