electricity grid – Enviro Updates

US overhauls electric grid to make way for more renewables

May 13, 2024

Valerie Volcovivi, REUTERS

The U.S. Federal Energy Regulatory Commission on Monday approved the first major electric transmission policy update in over a decade that aims to speed up new interregional lines to move more clean energy to meet growing demand amid the explosion of electric vehicles, data centers and artificial intelligence.

Approved in a 2-1 vote, the new rule is also the first time the FERC has ever squarely addressed the need for long-term transmission planning, playing a key role in helping meet the Biden administration’s goal of decarbonizing the economy by 2050 and making the grid more resilient to more frequent climate-fueled extreme weather events.

“This rule cannot come fast enough,” FERC Chairman Willie Phillips, who voted for the final rule. “There is an urgent need to act to ensure the reliability and the affordability of our grid.”

“We are at a transformational moment for the electric grid with phenomenal load growth,” he added, citing the surge in domestic manufacturing, proliferation of data centers, and the surge in extreme weather events that have pushed the country’s ageing infrastructure to its limits.

FERC has been working for nearly two years on the rule to reform how new electric transmission gets approved and paid for, with new requirements for moving electricity across states and covering the costs of new projects.

Climate Change & Energydecarbonization, electricity grid, renewable energy, transmission lines

Sonoma County airport electric-car-rental plan faces power-supply bottleneck

December 25, 2022

Jeff Quackenbush, NORTH BAY BUSINESS JOURNAL

A plan for electric-vehicle fast chargers at an envisioned new car-rental facility at the Charles M. Schulz–Sonoma County Airport has hit a speed bump: A power provider says it could take several years to provide the large amount of electricity those chargers require.

The facility proposal is being updated for EV rentals to fit with California’s recently accelerated push to electrify transportation to cut emissions.

But a local bottleneck in the electrical grid has the project team exploring ways to lessen the anticipated multi-megawatt power demand from chargers needed to quickly get returned EVs ready for the next renter.

Plans for the consolidated rent-a-car facility have been in motion since late 2019, according to documents presented to the Board of Supervisors early this year. The five rental companies operating at the county-run airport want to increase the number of vehicles available and add joint services such as fueling stations for the fleets, automated car wash and a shop for light maintenance.

Climate Change & Energyairport, electricity grid, EV charging stations, PG&E

Utilities need to do more to improve power grid, reduce wildfires, state audit finds

May 15, 2022

Kimberley Morales, THE MERCURY NEWS

A 91-page report by the state auditor says California utility regulators need to do more to ensure utility companies reduce the risk of wildfires.

According to the March audit, utilities led to two of the largest wildfires in the state from 1932-2021 including the Dixie Fire, caused by a Pacific Gas & Electric Co. line, which burned 963,000 acres and sits as California’s second-largest wildfire, and the Thomas Fire, which the report said was caused by Southern California Edison and burned 282,000 acres. The audit later adds that the cost of fighting fires has nearly doubled when comparing the 2016-2017 season to the 2020-2021 season from $1.9 billion to an estimated $3.5 billion.

The audit included that the state Office of Energy and Infrastructure Safety has failed to hold its standard for granting safety certifications to utilities such as PG&E despite serious deficiencies in mitigation plans.

“The office approved plans despite some utilities’ failure to demonstrate that they are appropriately prioritizing their mitigation activities, and subsequent reviews have found that some utilities failed to focus their efforts in high fire-threat areas,” wrote Michael Tilden, acting California state auditor in the public letter to the California Legislature.

Climate Change & Energy, Forestselectricity grid, fire danger, grid safety, PG&E, wildfires

Op-Ed: Public utilities commission is working against California’s climate goals

June 30, 2021

Laura Neish, CALMATTERS

Rooftop and other small solar projects are an important part of the state’s future energy grid, not just benefiting their owners, but providing stability, resilience and key services to everyone. Given rooftop solar’s importance to us all, it is extremely disappointing that the California Public Utilities Commission unanimously voted last month to significantly reduce the value small-solar owners are credited for their energy contributions to the grid.

The decision will discourage — or even destroy the market for — rooftop solar on existing roofs. It also raises the question of whether it will keep the state’s electric grid from reaching its goal of distributing 100% clean (nonfossil fuel) energy by 2045, as required by law.

The commission maintains an incentive structure that pays Pacific Gas and Electric, Southern California Edison and San Diego Gas & Electric to do the wrong thing. The commission needs to rethink what is best for California and encourage more rooftop installations, which provide essential benefits, such as keeping energy flowing locally during outages. They are the fastest route to 100% clean energy in the state.

These millions of rooftop systems can act in concert to supply energy during peak demand, eliminating the need to power up or build new, inefficient, “peaker” electric generation plants. Less dramatically, rooftop systems allow solar owners to reduce their own grid use during high electric demand.

Climate Change & Energyelectric utilities, electricity grid, net metering, resilience, rooftop solar

Rooftop solar and home batteries make a clean grid vastly more affordable

May 28, 2021

David Roberts, VOLTS

A New Roadmap for the Lowest Cost Grid

Energy nerds love arguing over the value of distributed energy resources (DERs), the rooftop solar panels and customer-owned batteries that are growing more popular by the day. There’s a fight in California right now over the value of energy from rooftop solar, just the latest skirmish in a long war that has ranged over numerous states.

The conventional wisdom in wonk circles is that the value provided by DERs is not sufficient to overcome the fact that the energy they produce is, on a per-kWh basis, much more expensive than that produced by utility-scale solar, wind, and batteries (residential solar is roughly 2.5 times as expensive as utility-scale solar, according to NREL).

For that reason, many wonks view DERs as a kind of boutique energy and argue that public funds are better spent on utility-scale energy.

Turns out: no, that’s wrong. Some groundbreaking new modeling demonstrates that the value of DERs to the overall electricity system is far greater than has typically been appreciated.

Climate Change & Energydistributed energy, electricity grid, rooftop solar, utility-scale solar

California just hit 95% renewable energy. Will other states come along for the ride?

April 29, 2021

Sammy Roth, LOS ANGELES TIMES

Something remarkable happened over the weekend: California hit nearly 95% renewable energy.

I’ll say it again: 95% renewables. For all the time we spend talking about how to reach 100% clean power, it sometimes seems like a faraway proposition, whether the timeframe is California’s 2045 target or President Biden’s more aggressive 2035 goal. But on Saturday just before 2:30 p.m., one of the world’s largest economies came within a stone’s throw of getting there.

There are several caveats. For one thing, Saturday’s 94.5% figure — a record, as confirmed to me by the California Independent System Operator — was fleeting, lasting just four seconds. It was specific to the state’s main power grid, which covers four-fifths of California but doesn’t include Los Angeles, Sacramento and several other regions. It came at a time of year defined by abundant sunshine and relatively cool weather, meaning it’s easier for renewable power to do the job traditionally done by fossil fuels.

And fossil fuels actually were doing part of the job — more than the 94.5% figure might suggest. California was producing enough clean power to supply nearly 95% of its in-state needs, but it was also burning a bunch of natural gas and exporting electricity to its Western neighbors. It’s impossible to say exactly how much of the Golden State’s own supply was coming from renewables.

That said, what happened on Saturday is definitely a big deal.

“It sends chills down my spine. It’s amazing,” said Elliot Mainzer, president and CEO of the California Independent System Operator, which runs the state’s main power grid. “These types of transitions aren’t always pretty. But we’re getting a lot of renewable generation online, making a real dent in the state’s carbon emissions.”

Climate Change & Energyelectricity demand, electricity grid, large-scale solar, renewable energy, utilities, Western EIM

How your water heater can be a secret weapon in the climate change fight

February 11, 2021

Todd Woody, BLOOMBERG NEWS

California wants to replace millions of gas water heaters with high-tech electric ones to serve as “thermal batteries” for storing solar and wind energy.

Nearly every home has a water heater, but people tend not to think about it until the shock of a cold shower signals its failure. To regulators, though, the ubiquitous household appliance is increasingly top of mind for the role it could play in reducing greenhouse gas emissions and weaning the power grid from fossil fuels

High-tech electric water heaters can double as thermal batteries, storing excess production from wind and solar generators. In California, officials aim to install them in place of millions of gas water heaters throughout the state. That would reduce the need to fire up polluting fossil fuel power plants to supply electricity for water heating after the sun sets.

“Water heaters have significant potential,” says Commissioner Clifford Rechtschaffen of the California Public Utilities Commission. “We know we’ll need a tremendous amount of storage to get to our decarbonization goals. We’re challenged now in evenings when renewable energy production declines and demand peaks.”

The focus is on heat pump water heaters, which transfer warmth from the atmosphere to a tank. They’re up to four times as efficient as conventional gas or electric water heaters. Nationwide, about half of water heaters are powered by natural gas. In California, water heating is one of the biggest consumers of fossil fuels and gas water heaters account for 90% of the market. Swapping them for heat pump versions could reduce greenhouse gas emissions from water heating in the state by as much as 77%, according to a paper published in January by the nonprofit New Buildings Institute.

Here’s how using heat pump water heaters for energy storage works: When renewable energy production peaks in the afternoon, a signal is sent that activates heat pump water heaters. After heating water, the devices shut down and store the hot water for use in the evening when demand spikes. That puts to use excess renewable energy generated during the day that would otherwise be wasted. Grid operators could also charge these thermal batteries as needed to balance supply and demand or before a planned power outage due to wildfire threats or in anticipation of extreme weather that could trigger blackouts. It’s estimated that heat pump water heaters could store hot water for 12 hours or more, depending on the size of the tank.
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Climate Change & Energyelectricity grid, heat pumps, water heaters