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December 18, 2025

Utility-scale Solar

Solar Energy Industries Association
Report Shows Cost Savings from New Solar, Storage in New England
A new report estimates that solar and battery storage growth in New England between 2025 and 2030 could reduce wholesale energy costs across the region by about $684 million annually by 2030.
American Clean Power Association
ACP Tallies 11.7 GW of Solar, Storage, Wind Additions in Q3
New solar, battery storage and onshore wind power generation totaled 11.7 GW in the third quarter of 2025, the American Clean Power Association reported.
Tri-State Generation and Transmission Association
West Needs Unified IBR Approach, WIRAB Says
Western state utility commissioners should encourage “standardization and harmonization” to effectively integrate inverter-based resources throughout the region, according to a guide developed by WIRAB and Elevate Energy Consulting.
UN Climate Change - Kiara Worth
Clean Energy Must Start Post-Trump Planning Now
Livewire columnist K Kaufmann argues that clean energy supporters should focus on a strategically planned, outcome-focused, and rapidly achievable transition toward renewables.
El Paso Electric
El Paso Electric Finds Solar Procurement Solution After Tariff Hikes

El Paso Electric again is seeking regulatory approval for its New Mexico renewable energy plan after resolving tariff-related cost uncertainty of a solar-plus-storage procurement proposed in the plan.

EIA
FERC Winter Outlook Warns of ‘Tight’ Conditions
FERC staff warned that severe weather events "could create tight supply conditions" in some areas during the coming winter months.
Duke Energy Renewables
SPP’s ELCC Methodology Contested at Appeals Court
The Sierra Club and Natural Resources Defense Council filed a petition with an appeals court to toss two recent FERC orders that granted SPP’s request to modify provisions for clean energy resources’ capacity accreditation.
IESO
IESO Preps for ‘Virtual’ Corporate PPAs
IESO will begin allowing corporate energy buyers to purchase power from off-site renewable generators next spring, giving loads another way to reduce their Global Adjustment charges.
GridLab
GridLab: More Renewables Could Have Saved Billions in PJM Auction

If just 10% of the land-based renewables in PJM’s generator interconnection queue had been developed, the total cost of the RTO’s 2026/27 capacity auction would have been reduced by $3.5 billion, according to an analysis GridLab commissioned by Aurora Energy Research.

© RTO Insider 
Now a Mature Industry, Batteries Face a More Certain Future
Reports of the energy storage industry’s demise are greatly exaggerated, experts said during the American Clean Power Association’s annual Energy Storage Summit.

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