Tower Solar Weekly Roundup: Fast-Track Grid Projects and Perovskite Research

Pennsylvania backs three projects for expedited PJM review

Pennsylvania announced November 5 that two proposed battery facilities and an expansion of an existing natural-gas plant entered PJM’s Expedited Interconnection Track. The state lists 860 megawatts for French Creek Storage, 500 megawatts for the Sammis battery project and 367 megawatts of added generation at Hunterstown.

Selection is not operation. The accelerated process addresses grid studies, while permits, financing, equipment, construction, network upgrades and final agreements still matter. FERC approved the temporary track in June for up to ten qualifying requests per year in 2026 and 2027. The state’s mid-2029 schedule and customer-cost claims remain forecasts rather than measured outcomes.

Practical takeaway: commercial customers should study when they use electricity, not only annual consumption. Developers should watch for executed interconnection agreements, battery duration, assigned upgrade costs and permitting milestones before treating the announced capacity as delivered.

Monash observes polar boundaries inside a perovskite material

Monash University reported November 6 that researchers used low-dose electron microscopy to observe atomic-scale, electrically polarized boundaries inside caesium lead iodide. The surrounding halide-perovskite material remains non-polar.

Researchers think these narrow regions may eventually help scientists influence how charges separate, move and recombine. That is a research pathway, not a commercial module, efficiency guarantee or installation timeline. Buyers should continue judging proposals by the actual equipment model, warranty and field record.

PolyU identifies another perovskite ageing mechanism

Hong Kong Polytechnic University reported November 4 that its researchers identified uneven charge buildup at certain boundaries between crystal grains when perovskite cells are exposed to light. The university says a treatment strategy reduced that degradation mechanism and extended test-cell stability.

The Monash and PolyU findings address different questions but point to the same industry challenge: understanding microscopic structures well enough to make perovskite devices predictable and durable. Laboratory stability gains do not automatically translate into full-size panels surviving decades of heat, moisture, mechanical stress and outdoor operation.

What customers should ask

For batteries, ask about usable kilowatt-hours, continuous power, backup circuits, charging source, warranty limits and whether the financial case depends on uncertain market revenue. For solar modules, ask for the exact model, product and performance warranties, degradation terms, certifications and documented commercial history.

Tower Solar’s calculator and proposal-review resources can help organize those questions, but they do not replace engineering, utility approval, contract review or verified project economics.