/daily ·03 AUG 2026 ·MONDAY ·2 MIN READ ·6 STORIES

Fusion gets its billion; perovskite breaks 28%

Commonwealth Fusion Systems closes a $1 billion round from institutional energy investors; perovskite-organic tandem cells hit 28% efficiency in Nature; and the grid's solar-hybrid limits get a frank assessment from Australia's largest renewable operator.

01 / The Day

MONDAY 03 AUG 2026, ranked

Commonwealth Fusion Systems raises $1 billion, adding institutional energy investors

CFS closed a $1 billion round — its largest since 2021 — bringing in institutional energy investors and sovereign wealth funds alongside its existing technology cap table. The company is developing SPARC, its planned first commercial fusion demonstration device.

Why it mattersInfrastructure-stage investors entering a fusion round signals that CFS's commissioning timeline is credible to a class of capital that typically waits for much later-stage validation.

01 heatmap.news↗

Perovskite-organic tandem solar cells reach 28.04% efficiency — published in Nature

Researchers at the Chinese Academy of Sciences fabricated perovskite-organic tandem solar cells achieving 28.04% steady-state photoelectric conversion efficiency with improved reverse-bias stability, addressing both the performance and durability gaps that have held perovskite solar back from commercialisation.

Why it mattersCrossing 28% with published stability data moves perovskite from a perpetually near-future technology to a near-term commercial candidate with a credible development roadmap.

02 pv-magazine.com↗

Trump administration bans new foreign-made solar inverters

The Trump administration issued an order prohibiting the import and installation of new foreign-manufactured grid-connected inverters, citing critical infrastructure security concerns — effectively targeting Chinese inverter brands that dominate US residential and commercial solar markets.

Why it mattersInverters are the power electronics connecting solar panels to the grid; a supply disruption in the dominant product category threatens installation timelines until domestic or compliant alternatives can scale.

03 heatmap.news↗

Solar-plus-storage heat pump systems cut grid electricity demand by ~60%

A modelling study found that integrating solar generation and battery storage with heat pump operation reduces grid electricity consumption by 59.89% compared to conventional heating and cooling, by matching solar output directly to heat pump cycles and storing surplus for evening peak periods.

Why it mattersHeat pumps are central to building decarbonisation; quantifying how much paired solar-storage reduces their grid demand changes the combined-install business case at both residential and commercial scale.

04 pv-magazine.com↗

TCL Solar to supply back-contact modules to the world's largest back-contact solar project

TCL Solar signed to supply n-type back-contact solar modules to an Australian project that will become the world's largest back-contact solar installation — a module design that eliminates front-side contact shading losses and was previously confined to premium residential applications.

Why it mattersBack-contact modules at utility scale validates that manufacturing cost reductions are far enough along to compete with mainstream module types, opening a higher-efficiency tier at grid-relevant volumes.

05 pv-magazine.com↗

Australia's largest renewable developer: the grid cannot run on solar hybrids alone

Squadron Energy's CEO argued publicly that while solar-hybrid systems are a viable component, building an entire electricity system around them is insufficient — drawing on Australia's 2026 grid experience and calling for investment in wind, hydro, and long-duration storage to provide system-level reliability.

Why it mattersThe statement carries particular weight coming from the operator with the largest renewable fleet in Australia rather than a sector critic — it is the field itself defining what the next build-out phase requires.

06 energy-storage.news↗

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Past days

The Daily Archive

/MON 03 AUGFusion gets its billion; perovskite breaks 28%/SUN 02 AUGSurplus signals /SAT 01 AUGThe Heat Is the Story /FRI 31 JULCalifornia hits 51% monthly solar; China sets record targets /THU 30 JULThe Billion-Dollar Build Edition /WED 29 JULWednesday, 29 July — Sodium-ion arrives; Australia breaks records /TUE 28 JULMalaysia orders the grid; Australia scales the cell /MON 27 JULA Solar Farm Becomes a Data Centre, Wisconsin Campaigns Against Solar, and LONGi Breaks the Tandem Efficiency Record /SUN 26 JULThe Build-Out Accelerates /SAT 25 JULUS battery storage breaks Q1 record; China tightens polysilicon /FRI 24 JULShock and Shine /WED 22 JUL194 gigawatts and a record solar cell /TUE 21 JULStorage everywhere, blockages everywhere /SUN 19 JULTwo US LFP milestones, one weekend /SAT 18 JULOvercapacity meets the taxman /FRI 17 JULFriday in Energy: Sodium Scales, Silicon Shines /WED 15 JULRecords fall, costs diverge /MON 13 JULSolid-state gets a quality stamp /SAT 11 JULThe grid just got bigger /FRI 10 JULSodium, Zinc, and CO2: Storage Diversifies Its Chemistry /THU 09 JULThe grid bottleneck, the cell plant, and the inverter ban