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Three grid regions processed 25GW of solar interconnection requests last year

Interconnection is widely seen as a bottleneck slowing solar deployment. Even so, three regional grid operators processed 25GW of utility-scale solar interconnection requests last year, an amount exceeding utility-scale solar installations in the entire US during the year.

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Upgrading transmission lines could enable 27GW more renewable power per year

“Advanced conductors” can deliver more electricity than conventional transmission lines, using existing transmission towers. Renewables trade group ACORE calls for greater use of advanced conductors, “to accelerate low-cost decarbonization.”

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Concentrating solar power with heat storage could compete with batteries

For short-term storage in a 100% renewables grid, thermal energy storage located at concentrating solar power plants could compete with batteries, found a study using an idealized grid model. Seasonal storage needs could best be met with power-to-gas-to-power technology.

Charge EVs at work, not home, to put daytime solar power to work

Workplace EV chargers, which number only 10,000 in the US, are needed for charging EVs in regions with abundant solar generation, says an RMI study. Home chargers are fine in regions with high wind generation, to enable nighttime charging with wind power.

3GW distributed solar and 2.1GW distributed storage in Michigan by 2035, under a low-cost scenario

A Vibrant Clean Energy study commissioned by Vote Solar found that GW-scale investments in distributed solar and storage would yield the lower cost between two approaches studied for Michigan to achieve economy-wide carbon neutrality by 2050.

Arizona Senate controls the fate of Phoenix anti-solar rate

Ending anti-solar rates in the Phoenix area depends on maintaining an Arizona law favoring competition in the electricity sector. The Arizona House has voted to end such competition, and the Arizona Senate could do the same.

US added 5.4GW of small-scale PV last year

Some northern states added as much small-scale PV per capita as the top states in the Southwest, taking advantage of solar irradiance in northern states that’s about 70% as high as that in the desert Southwest.

Rooftop solar groups ask FERC to stop utilities from charging customers for anti-solar advocacy

Four groups that support rooftop solar have asked federal energy regulators to disallow the “common” utility practice of charging their customers for their anti-solar advocacy.

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Lithium beneath the Salton Sea

The geothermal field beneath California’s Salton Sea contains brine that may hold from one to six million metric tons of lithium, an essential element for producing batteries. A Berkeley Lab study aims to evaluate the resource.

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Speed up interconnection studies with enforceable timelines and third-party competition, say SEIA and allies

The proposed measures would prompt transmission providers to complete studies on time, the groups said. They asked federal energy regulators for an accelerated interconnection rulemaking.

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