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batteries

A collection of 15 posts

Batteries Boom but Solar Slides in CAISO

Batteries Boom but Solar Slides in CAISO

For the first time in years, CAISO's solar output in April declined, but wind broke records after a 4-year drought. Gas was down, curtailment up, and battery operations continued to expand. We track all of these and more during a busy spring in California.

One Year of IESO Market Renewal in Ontario

One Year of IESO Market Renewal in Ontario

Canada's most populous province, Ontario, just celebrated the one-year anniversary of its nodal power market. We're taking a look at market trends, how outcomes tracked against expectations, and quirks across the market.

RTC+B, 60 Days Later in ERCOT

RTC+B, 60 Days Later in ERCOT

60 days on from the implementation of RTC+B we have data on the offers and outcomes shaping ERCOT's markets. Plus, a big reporting change that flew under the radar for some.

ERCOT's 4CP Summer Demand Roller Coaster Takes Off as Storage Flips Outcomes

ancillary services

ERCOT's 4CP Summer Demand Roller Coaster Takes Off as Storage Flips Outcomes

ERCOT's 4CP program is a bellwether for the shifting face of electricity demand and grid services. We explore the new landscape and how real-time data is key for managing the risk of escalating transmission charges.

In CAISO, Solar Generation Jumps Again While Batteries Reshape Demand

In CAISO, Solar Generation Jumps Again While Batteries Reshape Demand

April 2025 saw another round of record solar and storage participation in CAISO. We’re taking a look at how these resources, on both sides of the meter, continue to reshape market dynamics across the Golden State.

The Sun Also Rises in the Eastern Interconnection

The Sun Also Rises in the Eastern Interconnection

MISO and PJM have finally seen substantial solar growth over the past year, but this new generation resource is also affecting the existing stack, altering the operations of coal and gas.

Exploring extreme prices in ERCOT with Grid Status

Exploring extreme prices in ERCOT with Grid Status

On 2/19/2025 a single location in ERCOT experienced all-time-high prices. What happened, and was the local battery, Rabbit Hill, able to capitalize on these extreme prices?

Byte Blackouts: How large data center loads are surfacing new issues

Byte Blackouts: How large data center loads are surfacing new issues

With continued rapid growth in data centers, PJM's demand ecosystem is changing, but the market's resource mix has yet to add its own flexible assets.

ERCOT is on a hot streak during a cold winter

ERCOT is on a hot streak during a cold winter

ERCOT set new records in load, net load, solar, prices, and battery discharge within a few days, let's explore the data.

Batteries have Reshaped ERCOT’s Ancillary Services Procurement

Batteries have Reshaped ERCOT’s Ancillary Services Procurement

For most of their tenure on the ERCOT grid, batteries have largely made their bones supplying ancillary services as opposed to energy, but that is beginning to change.

Peak Western Conditions Reveal a Changed CAISO

Peak Western Conditions Reveal a Changed CAISO

On September 5th and 6th, 2024, the California ISO (CAISO) was under stress from both within and without. High temperatures, spiking day-ahead prices, import cuts, and wildfires — a problematic milieu. Despite this, real-time prices remained low and neither conservation calls nor emergency alerts made an appearance. Let'

Breaking Down a Record-Setting Day in ERCOT

Breaking Down a Record-Setting Day in ERCOT

Market highlights and explanations from a day of records in ERCOT.

Batteries Taking Charge of the California Grid

Batteries Taking Charge of the California Grid

Batteries have taken a huge leap forward in CAISO this spring, shifting from a noteworthy trend into a major force impacting operations of the grid

Two Weeks of Firsts in Texas: ECRS and New Records

ancillary services

Two Weeks of Firsts in Texas: ECRS and New Records

Recently, the Texas grid has caught the attention of the energy industry due to unseasonably warm temperatures and ERCOT's release of a new market product, the first in over a decade.

Balancing Act in California

Balancing Act in California

While CAISO continues to set renewable generation records, there are worrying signs of regional balkanization of flexibility which could increase fossil fuel generation in an era when many BAs in the West are trying to do the opposite.