Author
John Weaver pv magazine editor
John Weaver pv magazine editor

John Fitzgerald Weaver

Commercial Solar Guy is a commercial & utility solar developer, general contractor for commercial and residential solar, as well a consultant. We construct projects in MA, RI, NY, and soon PA. The company has worked on projects across the United States – currently in California, New York, Pennsylvania, Massachusetts, and others. We have also consulted internationally. If you’re a business or land owner, we’ll make sure you know the details on the deal you’re signing.

Articles written by John Fitzgerald Weaver

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Two-minute warning for battery fires Machine learning techniques have been trained to recognize the distinct sound of safety valve releases, offering an early warning system for battery fires.
John Fitzgerald Weaver
Nov 20, 2024
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Retrofitting batteries increases solar plant revenue 29%, to 81% In areas with high population density or abundant solar energy, adding one to four hours of battery storage to a solar power facility can significantly increase site revenue. However, the added value diminishes with storage capacities exceeding four hours.
John Fitzgerald Weaver
Nov 01, 2024
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California farmers developing 20 GW solar-plus-storage plan The Golden State recently signed AB 2661, granting the Westland Water District authority to develop transmission lines that will enable solar energy and storage projects on 130,000 acres of drainage-impaired farmland.
John Fitzgerald Weaver
Oct 18, 2024
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A look at next generation battery cells The battery industry is experiencing a seismic shift with advancements in prismatic cell technology, led by companies like Cornex, which promise to reshape energy storage solutions.
John Fitzgerald Weaver
Oct 17, 2024
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StrataCleanEnergyCalifornia
California crosses 10 GW utility-battery storage threshold CAISO set a new peak battery discharge record of 8.3 GW on October 9, as the state’s future EIA energy storage queue holds 177 GW of capacity, with 1.9 GW expected added through the end of the year.
John Fitzgerald Weaver
Oct 14, 2024
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Massachusetts set for 1.2 GWh CATL battery The Ward Hill battery energy storage system (BESS) is moving through Haverhill’s zoning process, focusing on wetland classification near the installation.
John Fitzgerald Weaver
Oct 04, 2024
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Why 25-cent electricity makes off-grid solar-plus-storage a smart investment in US Once electricity prices hit $0.25/kWh, disconnecting from the grid with residential solar-plus-storage starts to become financially viable, with sunny places making strong financial arguments. Recent drops in battery prices make the case for leaving the grid even stronger.
John Fitzgerald Weaver
Oct 03, 2024
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Solar-plus-storage dominating future U.S. power grid A report from Berkeley Lab reveals a significant expansion of solar-plus-storage facilities in the U.S. power plant market, highlighting an evolution from frequency to arbitrage and curtailment mitigation markets. The best is yet to come, as ongoing price decreases are still being absorbed by the market and are already being used to fill the interconnection queues with terrawatts of capacity.
John Fitzgerald Weaver
Sep 26, 2024
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Battery fire shuts down California highway A utility-scale battery delivery overturned on a highway after the truck carrying the batteries collided with a car, overcorrected, tipped to the side and dumped its cargo, leading to a fire that lasted more than 24 hours.
John Fitzgerald Weaver
Aug 02, 2024

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