Residential PV

Analyzing the 2% DC voltage drop rule

The good people at Mayfield Renewables take us deep into the technical weeds as they question a rule-of-thumb: Is the 2% DC voltage drop rule accurate for real-world conductor sizing or has technological progress in solar made the rule irrelevant?

Women entrepreneurs are essential to last-mile distribution of renewable energy technologies

A new fund has been launched to provide microgrants of $3,000 to $10,000 to the women entrepreneurs and community organizations working to provide clean, reliable and primarily off-grid power to remote communities.

Morning Brief: Revenue streams of CAISO batteries, Entergy still on the gas, New Hampshire NEM

Also in the brief: EPA raises legal questions about California’s plan to ban new gas-powered cars starting in 2035

What is distributed generation’s real worth for the grid?

A thought experiment by Severin Borenstein suggests how much rooftop solar could reduce transmission and distribution costs.

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Utah utility Rocky Mountain Power and solar advocates aren’t even close on the value of rooftop PV sent to the grid

Solar from customer roofs in Utah is worth somewhere between 1.5 cents/kWh and 22.6 cents/kWh, depending on your calculations and who you ask — a ridiculously wide range.

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EagleView promises to cut a week off of residential PV project time through aerial imagery

Aerial imagery company, EagleView, is looking to leverage years of experience working in the insurance industry and for municipal governments into becoming the ‘gold standard’ for solar aerial imaging.

Morning Brief: Wyoming coal, Texas sun, Dems’ clean energy package, EV batteries made from deep-sea rocks

Even four years of the most pro-coal president in recent memory has done little to change coal’s misfortunes.

US solar racking industry is innovating and consolidating

With installers and developers needing to squeeze every kilowatt-hour out of every roof and project, racking and trackers are the unsung heroes that secure and tilt panels while maximizing output and protecting wiring and other gear.

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Chinese PV Industry Brief: 1 GW of distributed solar came online in August

More than 1 GW of subsidized small solar arrays were installed in China last month alone and manufacturer Suntech has announced the start of operations at its 500 MW Indonesian cell and module fab.

Morning Brief: Duke Energy reaches deal with Sunrun, Vote Solar to modernize rooftop PV in South Carolina

Also in the brief: 67-MWdc Lotus Solar Farm in Madera County, California, developed by 8minute Solar Energy, is now fully operational. Plus First Solar’s secondary offering for the Waltons, and Natron gets $20 million for battery scale-up.

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