Eduardo Pelegri-Llopart

AB-825 enables the creation of an Independent Regional Organization for West-wide electrical markets

SB-254 is a very ambitious bill that addresses short-term, medium-term and long-term issues in our electrical grid

Highlights of Energy Bills in California 2025-2026 The highlights for the busy reader

The 2025 Session of the California Legislature included multiple energy-related bills. I just published a post highlighting the most important ones, including AB-825 & SB-254

pelegri.substack.com/p/highlights...

Do let me know if I am missing any bills you think should be highlighted

#energysky

September 23 #chartoftheday

Florida PSC approves FPL’s HVAC On-Bill (HOB) pilot.⚡
Customers receive efficient HVAC systems and service on a fixed monthly charge, with no upfront cost.
FPL gains load control. #energysky

More: app.halcyon.io/processes/9e...

Electrical Markets in the West and SB-540 An innovative solution to a long running challenge

A wrote my position on this bill back in April. I think it is still relevant if you are interested in the topic

pelegri.substack.com/p/electrical...

The California legislature provides a bill analysis before votes. The one for the final vote on SB-254 is below. Its long because the bill is so ambitious. It is amazing that this passed

leginfo.legislature.ca.gov/faces/billAn...

Another very big bill signed. SB-254 has short-term, medium-term and long-term measures to improve affordability of electricity. I don't know what is the "official name", I like California Electricity Modernization and Affordability Act

#energysky

leginfo.legislature.ca.gov/faces/billHi...

AB-825 (nee SB-540), the Independent Regional Organization - Expansion of Day Ahead Market was signed by Gov. Newsom

Awesome! After so many attempts

Western States together

leginfo.legislature.ca.gov/faces/billHi...

#energySky

It's great, isn't it?

I can see several benefits. It may simplify the installation (maybe just 120V?), but it can help manage the load, both as max load and as time-shifting, to hep in tariffs with dynamic rates (or strong TOU), and those with capacity charges

Similar to a Copper stove

There were also biDirectional chargers from Enphase and Sigenergy, news from EG4, and others...

If interested, check out my writeup at pelegri.substack.com/p/a-new-msa-...

RE+2025 happened last week and I tracked news on residential electrification

I liked best ConnectDER IslandDER: a <$850 Meter Socket Adapter with a MID and CTs to integrate whole-house batteries. ConnectDER PR listed 4 vendors, including FranklinWH and EcoFlow, and they have 22 more...

#energysky

Mail from @350baaction.bsky.social claimed that SB-540 was a gut-and-replace bill. SB-540 has been debated in many forums, it has gone through the normal process, and there are no recent changes

Check at leginfo.legislature.ca.gov/faces/billVe...

Summer Recess Update - Energy Bills in California 2025-2026 So many bills, so little time

These are the last days of the California Legislature

An overview of key energy bills is at pelegri.substack.com/p/summer-rec...

I just got mail from a group that should know better with misinformation about SB-540, the Extended Day Ahead Market. My take is at pelegri.substack.com/p/electrical...

Modern Residential Batteries - Summer 2025 Batteries, the core of the House Microgrid

@luigisemenzato.bsky.social did you see my writeup on modern battery systems? My take is that they are creating a micro-grid in our houses (this may be US-specific - my take leverages that we have relatively easy to access meters where you can inject a battery)

pelegri.substack.com/p/modern-res...

Musings from California | Eduardo Pelegri-Llopart | Substack Commentary, News and Resources on our Energy Transition with some bias towards USA/California/SF Bay Area. Click to read Musings from California, by Eduardo Pelegri-Llopart, a Substack publication wit...

I want to write a post capturing what I understand about the different approaches to Load Management. For quite a while it was all pretty fuzzy to me

I write at pelegri.substack.com mostly as a way to force me to understand the topics I care about

A modern battery that also does load management and that has those appliances connected/managed can do what you suggest if it needs to

The ideal is to be able to do that when needed - long spikes - but even a relatively small battery by itself can just “smooth out” the spike

A Dybamic Price mechanism is continuously compensating the owner of the resource directly. The challenge is finding a tariff that is understandable and that compensates well the homeowners. Both in managing the load and in exports

IMHO, the enabler for Dybamic Rates are batteries and automation

So they provide little compensation and are called when consumers are most likely to want the resources

Another problem is that they pay little to the owner of the resource, the consumer

And these make it harder to convince consumers to sign for the programs

“VPP” is a fuzzy term. Ed is referring to a program like DGGS where aggregators are reacting to high demand events by managing resources they control

There are several problems with those. One is that they are event-driven, not continuous. They are triggered by high load events…

I have guesses about all of the above but I'd love to get real data / experience, even if only anecdotal

TIA

Compared to California's CalFUSE proposal, the Spanish tariffs are so much simpler to understand and reason about. I'm looking into
* public adoption / reaction
* impact on households bills
* concerns about RTP giving preferential treatment to specific classes of customers

Does anybody have pointers to / experience with Real Time Pricing tariffs in Spain? I'm looking into the proposals for California and I'd love to do a compare / contrast. I know what the rates are, what I'm looking for is customer feedback

#energysky

Compared to California's proposal...

Dynamic Rates were promised in 2001

pelegri.substack.com/p/dynamic-ra...

Looking at the rates also shows improvements on the CAISO grid from 2023 through 2024 into 2025

The Shape of A Dynamic Rate Data from the PG&E Hour Flex Pilot

The @californiapuc.bsky.social is discussing when & how to bring real-time pricing. The rates used in the PG&E Pilot show fairly low rates with narrow spikes & moderate peaks. A household can handle them with a residential battery to save money and help the grid

pelegri.substack.com/p/the-shape-...

Thanks, this is useful to know.

Inside the battery projects redefining PG&E’s grid upgrade playbook Two front-of-meter batteries are combining distribution deferral contracts and flexible interconnection to provide grid relief.

Want to know why it's so goddamn hard for utilities and battery project developers to do what might seem at first glance to be the relatively simple task of installing a battery to be a stand-in for grid upgrades? Check this out: www.latitudemedia.com/news/inside-...
#energysky

Nice!

Software is at the core of the new grid. Utilities need to up their game or will fall behind. Same for their regulators.

Do you know why this is configured as a 2 hour duration? Here in California we are doing 4 hours and beyond to time shift renewables

I only see how provide a comment on the Proceeding, but that proceeding has been active for a long time and it has 1622 comments (and over 700 documents). A comment on the latest PD feels lost in there

It would be very useful to have a per-PD comment mechanism

Kudos to you for soliciting feedback

How does a member of the public provide a comment to a Proposed Decision?

As a concrete case, on July 25, 2025 there was a PD on R.22-07-055. How can a member of the Public provide feedback on that PD? I only see how to...

Dynamic Rates - Awaiting a Promise from 2001 California's ratepayers have paid $4.5 Billion for Smart Meters but we still don’t have dynamic rates

California promised dynamic rates back in 2001 but they are not yet widely available even after spending $4.5B of ratepayers money in Smart Meters. New legislation AB-1117 wants to change this

open.substack.com/pub/pelegri/...

#energysky