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Solar-plus-storage capacity accreditation now splits three ways across PJM, MISO, and ERCOT, and the hybrid ELCC number is what actually anchors the PPA

Every hyperscaler-anchored solar-plus-storage project of the Steel River class runs on a PPA whose economics assume a specific quantity of capacity value. That capacity number is not a single figure. It is set by the market operator the project lives inside, and PJM, MISO, and ERCOT now use three fundamentally different methods to produce it. PJM ELCC, MISO seasonal accreditation, and ERCOT energy-only settlement each produce a different accreditation percentage, on a different clock, with a different sensitivity to how much storage has already been built ahead of the queue. Reading a hybrid capacity value at face is the mistake. The value depends on which market design the project cleared into and where it sits on the ELCC saturation curve.

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2,600+ GW
of clean power projects in US interconnection queues
20%
of US electricity from nuclear, the largest clean baseload source
5×
projected grid storage capacity growth by 2030
$10T+
energy transition investment by 2050 (BloombergNEF)
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Cypress Creek Energy ai-demanddata-centers

Google anchors 2.5 GW Arkansas solar-storage build, largest in US history

Cypress Creek Energy and Google broke ground this week on Steel River Energy Center in Mississippi County, Arkansas. Full build is 2.5 GWdc of solar plus 2.9 GWh of storage across three phases through 2029, with Google under PPA for the first two phases (1.6 GWdc, 1.9 GWh). Every major component is US-sourced: First Solar modules, 142,000-plus tons of structural steel from U.S. Steel's Big River facility in Osceola, LG Energy Solution Vertech battery systems assembled in the US.

Eos Energy Enterprises investor release, July 15, 2026 us-supplythesis-confirm

Eos preliminary Q2: record revenue, $807M backlog, second US battery line in production

Zinc-halide long-duration storage maker Eos Energy Enterprises pre-announced Q2 2026 revenue of $68 to $69 million on July 15, its highest quarter ever, with backlog up roughly 25 percent quarter-over-quarter to about $807 million. First-half 2026 revenue already exceeded all of 2025, and Battery Line 2 at the Thorn Hill, Pennsylvania plant has started commercial production, keeping the company on the path to a 4 GWh annual run-rate by year-end. The read-through: a non-lithium, US-domiciled long-duration storage supplier is finally clearing the scale threshold that offtake counterparties actually price.

McGuireWoods interconnectiondata-centers

FERC's large-load reform window opens: July 9 intervention passed, July 20 adequacy reports next

The six Section 206 show-cause orders FERC issued on June 18 have now moved into their working phase. The July 9 intervention window closed last week, resource adequacy informational reports from every RTO and ISO are due July 20, and the substantive tariff responses land August 17. The five reform categories set the terms of what a uniform federal large-load regime will actually look like.

Wood Mackenzie chinaeurope

EU ban on Chinese inverters would remove 14% of forecast solar demand through 2030

Wood Mackenzie puts a number on the European Commission's move to freeze Chinese inverters out of EU-funded clean energy projects: 28 GWdc of PV inverter demand at risk through 2030, 12% of forecast storage deployments exposed, and a redirection of roughly 4 to 5 GW per year away from Chinese vendors. Central and Eastern Europe carries the most concentrated hit.

Energy-Storage.News sodium-ionthesis-risk

US sodium-ion goes commercial: Peak, ESS Tech, and Unigrid all ship in the same week

Three US sodium-ion firms landed commercial milestones between July 8 and 10, 2026: Peak Energy announced a $71 million, 4 GWh Sacramento factory; ESS Tech launched a modular 4.8 MWh container product; and Unigrid delivered its first residential units. Individually small, together the announcements are the US-supply-chain counterpart to CATL's June sodium-ion offtake and a second hard data point on the published thesis-risk vector.

Leeward Renewable Energy (Business Wire) solarai-demand

Oklahoma solar starts converting the safe-harbor bank: 278 MW online, 725 MW committed under Google PPAs

Leeward Renewable Energy said Huckleberry Solar (125 MW) and Twelvemile Solar I and II (153 MW) reached commercial operation in Oklahoma, with three more sites totaling 447 MW still under construction, all supported by power purchase agreements with Google. The commissioning landed three days after the July 4 begin-construction cutoff for Section 48E and is the first clean marginal read on how quickly hyperscaler-financed capacity behind the safe-harbored bank starts to physically arrive.

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Utility scale solar array with battery storage containers (file photo standing in for the co-located solar-plus-storage projects that carry hybrid capacity accreditation).
capacityelcc

Solar-plus-storage capacity accreditation now splits three ways across PJM, MISO, and ERCOT, and the hybrid ELCC number is what actually anchors the PPA

Every hyperscaler-anchored solar-plus-storage project of the Steel River class runs on a PPA whose economics assume a specific quantity of capacity value. That capacity number is not a single figure. It is set by the market operator the project lives inside, and PJM, MISO, and ERCOT now use three fundamentally different methods to produce it. PJM ELCC, MISO seasonal accreditation, and ERCOT energy-only settlement each produce a different accreditation percentage, on a different clock, with a different sensitivity to how much storage has already been built ahead of the queue. Reading a hybrid capacity value at face is the mistake. The value depends on which market design the project cleared into and where it sits on the ELCC saturation curve.
Utility scale solar array under an open sky (file photo standing in for the tax equity and credit transfer market that finances projects of this class).
tax-equitytransferability

Section 6418 transferability clears at a spread that pays for four separate risks, and each of the four is starting to price on its own line

The tax credit transfer market that Section 6418 opened in 2023 clears at a discount to face that is often reported as a single number. It is not one number. It is four risks stacked in a single price: recapture, disallowance, credit-quality, and time value. The four are converging toward separate line items in transfer term sheets as the market matures and as the OBBBA transition pushes vintage differentiation into the front of the trade. This piece reads each of the four risks against how the price actually gets set, why the top of the market clears at a tighter spread than the middle, and what the recapture insurance market is now underwriting that used to be indemnified inside the transfer agreement itself.
High voltage transmission substation standing in for the six RTO and ISO systems now working against the July 20 generation adequacy filing and August 17 tariff response deadlines in the FERC Section 206 large load show cause dockets.
fercsection-206

The July 20 generation adequacy filings in the six FERC 206 show cause dockets are the last dated input before the August 17 tariff response deadline sets the co-location rules for every non-PJM ISO

Generation adequacy reports in the six large load Section 206 dockets FERC opened on June 18 are due Monday July 20, five sessions from Wednesday's close. The intervention window closed July 9. The 60-day tariff response deadline lands August 17. PJM already has a co-location tariff framework in flight from the December 2025 order; MISO, SPP, CAISO, ISO-NE, and NYISO now have to either justify their existing tariffs as still just and reasonable under the new large load facts, or file the equivalent of a Firm and Non-Firm Contract Demand structure inside the same August 17 window. The generation adequacy filings are the analytical foundation each ISO will use to defend or reform its rules. The five categories FERC named in the June 18 orders read as a menu of the answers the Commission expects.

Frequently asked

Why not just read general energy news?

Because generalist coverage buries the supply-chain and policy texture. A permitting decision on a transmission project, a DOE loan commitment to a lithium refinery, an NRC licensing milestone for an SMR, a FERC rulemaking on interconnection reform: these move capital in ways that earnings coverage misses. Clean Power Press is built for the people who track those signals.

Is this for traders or long-horizon investors?

Long-horizon. The thesis is a multi-decade buildout. The daily briefs work for tactical positioning, but the analytical frame is structural: supply-chain, policy, project-pipeline. If you're trading micro-moves on spot prices, this isn't your tool.

What verticals do you cover and how do they connect?

Energy storage and lithium, solar, nuclear and SMRs, grid and transmission, and critical minerals. Climate policy is the connective tissue. The verticals are separate editorial frames but they share a common insight: the bottleneck on every one of them is permitting, supply-chain concentration, and policy implementation, not the underlying technology.

What's your stance on climate change?

Climate change is established science. We don't give false balance to fossil-fuel-industry framing on the science. Our editorial stance is climate-forward: the clean energy transition is necessary, urgent, and one of the most consequential investment stories of the next several decades. That's not advocacy. We report facts, cover setbacks as well as progress, and don't oversell the pace of transition.

What's your analytical frame across verticals?

Track marginal, watch policy, ignore most price noise. The marginal capex dollar, the marginal project entering permitting, the marginal regulatory decision: these are where the structural story moves. Average inventory levels, spot price tapes, and quarterly headlines follow later and with lower signal value.

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