Radar · Industry landscape · the United States
Energy Landscape of the United States
21,647 Energy companies in the United States, in one picture: who is hiring, who is raising money, who founded them, where they are based, what the news is about, which skills employers want and where the research is going. Updated August 2026.
21,647companies tracked
$278.5Bdisclosed funding
2,028hiring right now
14,137events · 24 months
425,263news articles · 12 months
Who leads Energy in the United States
The leaderboard lists 21,647 U.S. energy firms, highlighting the 2,028 currently hiring and the 1,817 that have disclosed recent funding rounds, with top hiring firms named.
open roles
Hiring now
ranked by live open roles
- 01
Cummins13last posted Aug 2026
- 02
Fluor13last posted Aug 2026
- 03
Halliburton13last posted Aug 2026
- 04
GE Vernova13last posted Aug 2026
- 05
Holtec International12last posted Jul 2026
- 06
Enterprise Products12last posted Jul 2026
- 07
Lennox International Inc12last posted Jul 2026
- 08
Briggs & Stratton12last posted Jul 2026
2,028 companies hiring · 29 posted in the last 30 days
disclosed funding
Most funded
disclosed totals, all rounds
- 01
Alpha Generation$6BConventional Debt · Oct 2025
- 02
Dominion Energy$4BGrant (prize money) · May 2025
- 03
Ascent Resources$4BPost IPO · Jan 2019
- 04
PBF Energy$3.9BConventional Debt · May 2018
- 05
TerraForm Power$3.7BConventional Debt · Oct 2019
- 06
SolarCity$3.6BPost IPO · Sep 2016
- 07
Talen Energy$3.4BConventional Debt · Aug 2023
- 08
FourPoint Energy$3.2BSeries D · Jul 2022
1,817 companies with disclosed rounds · $278.5B total
revenue
Revenue leaders
official filings first, else latest snapshot
- 01
ENGIE$74.7BFY2022 filing
- 02
Marathon Petroleum$34.2BFY2026 filing
- 03
Phillips 66$32.5BFY2018 filing
- 04
Valero$32.4BFY2026 filing
- 05
HF Sinclair$18.4BFY2020 filing
- 06
- 07
Targa Resources$14.1BFY2019 filing
- 08
Kyocera$13.9Bsnapshot Mar 2024
280 companies with a revenue figure
headcount
Largest teams
ranked by tracked headcount
- 01
- 02
- 03
Quanta Services52,500tracked employees
- 04
McDermott International42,600tracked employees
- 05
Eni Next33,934tracked employees
- 06
National Oilwell Varco33,676tracked employees
- 07
- 08
Unitil29,455tracked employees
1,669 companies with headcount data
share of events
Share of voice
share of all tracked sector news events, 24 months
- 01
ExxonMobil2.4%429 tracked events
- 02
ConocoPhillips1.9%329 tracked events
- 03
- 04
Air Products1.5%260 tracked events
- 05
- 06
Baker Hughes1.2%207 tracked events
- 07
- 08
17,631 tracked events across 1,022 companies
articles
In the news
Prism news coverage, last 12 months
- 01
- 02
Fulham10,211articles in the window
- 03
- 04
Edgewater2,452articles in the window
- 05
Duke Energy1,943articles in the window
- 06
- 07
- 08
Oklo1,464articles in the window
693 of these companies drew sector coverage in the window
Radar
See all 21,647 Energy companies in the United States
Filter by funding, headcount, hiring and location, and export the list.
How the Energy ecosystem in the United States grew, 2016–2025
The chart shows yearly company foundations from 2016‑2025, peaking at 562 new firms in 2017 and dropping to 17 in 2025.
Companies founded / year
new Energy companies in the United States
20162025
peak 562 in 2017
Companies raising / year
with a disclosed round that year
20162025
peak 228 in 2025
Disclosed funding / year
sum of disclosed rounds (USD)
20162025
peak $39.1B in 2018
Where Energy companies in the United States are based
Hub 01
Houston
1,287 Energy companies
46% of the Energy companies across these hubs
1,287companies
$48.4Bdisclosed funding
172hiring now
Hub 02
New York City
290 Energy companies
10% of the Energy companies across these hubs
290companies
$13.4Bdisclosed funding
27hiring now
Hub 03
Dallas
270 Energy companies
10% of the Energy companies across these hubs
270companies
$15.6Bdisclosed funding
24hiring now
Hub 04
Denver
267 Energy companies
10% of the Energy companies across these hubs
267companies
$16.2Bdisclosed funding
28hiring now
Hub 05
Austin
194 Energy companies
7% of the Energy companies across these hubs
194companies
$4.9Bdisclosed funding
19hiring now
generated artwork
Hub 06
Tulsa
167 Energy companies
6% of the Energy companies across these hubs
167companies
$7.4Bdisclosed funding
18hiring now
generated artwork
Hub 07
Midland
166 Energy companies
6% of the Energy companies across these hubs
166companies
$8.4Bdisclosed funding
26hiring now
generated artwork
Hub 08
Oklahoma City
163 Energy companies
6% of the Energy companies across these hubs
163companies
$5.7Bdisclosed funding
24hiring now
The Energy market map of the United States: what these companies actually do
Sub‑categories are broken down, showing deep tech (243 firms) and enterprise tech (237) as the largest groups, while fee‑for‑service is the most common revenue model (9,196 firms).
- Deep Tech243 companies · $18.7B raised · 54 hiring
- Enterprise Tech237 companies · $12.5B raised · 36 hiring
- Inc 5000206 companies · $2.3B raised · 55 hiring
- Global 200088 companies · $19B raised · 46 hiring
- Consumer Digital87 companies · $2.7B raised · 9 hiring
- Fortune 50086 companies · $18.8B raised · 41 hiring
- Enterprise Software44 companies · $102.6M raised · 7 hiring
- Solar Energy Tech43 companies · $2.6B raised · 9 hiring
- SaaS27 companies · $124.2M raised · 4 hiring
- Masschallenge Batches20 companies · $41.6M raised · 3 hiring
- Smart Led Lights19 companies · $2.9M raised
- Nuclear Fusion18 companies · $6.7B raised · 3 hiring
Monetization
How Energy companies make money
How many companies earn revenue each way. Plenty use more than one model, so the counts add up to more than the sector.
Fee-For-Service9,196
Physical Commerce7,569
E-Commerce - Product5,630
Commission on Transaction3,679
E-Commerce - Service1,469
Advertising1,215
Subscription811
Sponsorship90
Funding, M&A and the deals moving Energy in the United States
In the past two years, 14,137 corporate events were tracked, including 4,683 earnings releases and 1,597 mergers and acquisitions.
Earnings 4,683M&A 1,597Announcement 1,585Contracts 1,406Leadership 1,388Assets 1,352Funding 559Lawsuit 267Capital 262Regulatory 235
- M&AOn May 1, 2026, Viper Energy, Inc. entered into a definitive purchase and sale agreement to acquire all of the equity interests of Riverbend Oil & Gas IX, L.L.C., an entity owning certain mineral and royalty interests, from Riverbend Oil & Gas IX (AIV), L.L.C. and ROG IX, L.L.C., in exchange for US$337 million in cash and approximately 3.7 million shares of Viper’s Class A common stock, subject to customary adjustments.2026-05-05
- M&AUS-headquartered fluid analysis company POLARIS Laboratories has acquired Oil Check Laboratory Services (OCLS).2026-05-05
- FundingCrossBoundary Energy has secured a $40m investment to fast-track commercial and industrial (C&I) renewable energy solutions throughout sub‑Saharan Africa.2026-05-05
- M&ATexas-based private equity firm Greenbelt Capital Partners recently bought Broomfield’s Peak Utility Services Group Inc. from ORIX Capital Partners, another PE company.2026-05-05
- FundingProPetro Holding Corp. today announced its intention to offer, subject to market and other conditions, $500,000,000 aggregate principal amount of convertible senior notes due 2031 in a private offering to persons reasonably believed to be qualified institutional buyers pursuant to Rule 144A under the Securities Act.2026-05-04
- M&AHubbell Incorporated (NYSE: HUBB) today announced it has entered into a definitive agreement to acquire NSI Industries, a portfolio company of Sentinel Capital Partners and a leading provider of electrical fittings, connectors, components and wire management products, for $3.0 billion in cash.2026-05-04
- M&ASun Financial Inc acquired a new stake in shares of GE Vernova Inc. (NYSE:GEV – Free Report) during the fourth quarter, according to its most recent disclosure with the Securities & Exchange Commission.2026-05-04
- M&AThe Brock Group, a leading provider of specialty industrial services, today announced the acquisition of a premier scaffolding business with five locations across major Florida metropolitan markets.2026-05-01
- M&ADevon Energy Corp. (NYSE: DVN ) is acquiring Coterra Energy in a deal expected to close soon, pending final closing conditions.2026-04-30
- M&ATwenty One Capital ... announced plans to acquire financial services company Strike and global bitcoin-mining platform Elektron.2026-04-30
Mergers and acquisitions
Deals from the last 24 months where a Energy company in the United States was the buyer or the one bought, newest first. “Undisclosed” means the price was never published — not that the deal was worth nothing.
| Acquirer | Target | Deal value | Status | Date |
|---|---|---|---|---|
| $16.5M | Completed | 2026-06-09 | ||
| Gamper Acquireco II | $1209.7B | Announced | 2026-06-02 | |
| CPP Investments and Global Infrastructure Partners | $6.2B | Announced | 2026-05-06 | |
| undisclosed | Announced | 2026-05-05 | ||
| Oil Check Laboratory Services | undisclosed | Announced | 2026-05-05 | |
| $3B | Announced | 2026-05-04 |
Who is listing, hiring leaders, launching and winning work
This view details specific events such as IPO filings, leadership changes, product launches and contract wins for the sector’s companies.
IPO pipeline
58 companies listed or filing · last 24 months
LegenceFollow-on Offering · Nasdaq · LGN · 13 reportsApr 2026
Mach Natural ResourcesOFS · NYSE · MNR · 1 reportApr 2026
Diamondback EnergyFollow-on Offering · NASDAQ · FANG · 3 reportsMar 2026
Controlled Thermal ResourcesSPAC · Nasdaq · CTRH · 2 reportsMar 2026
NRG EnergyFollow-on Offering · NYSE · NRG · 1 reportMar 2026
PPLFollow-on Offering · New York Stock Exchange · 1 reportFeb 2026
Energy Services of AmericaFollow-on Offering · NASDAQ · ESOA · 2 reportsFeb 2026
Portland General ElectricIPO · NYSE · POR · 1 reportFeb 2026
Leadership moves
220 tracked people moves · last 12 months
Clean Energy FuelsAndrew Littlefair · Resignation → Government Relations ConsultantMay 2026
Delek US HoldingsAmber Russell · Appointment → Executive Vice President, RefiningMay 2026
RheemJeff Stanek · Departure → Senior Vice President and General Manager, US Air at Rheem ManufacturingMay 2026
Westinghouse ElectricDan Sumner · Appointment → President and Chief Executive OfficerApr 2026
Product launches
tracked launches · last 12 months
Fractal EMSCustomer-First Pricing (Pricing)May 2026
Circle KElectrowave Peach (Electrolyte drink)Apr 2026
Excelerate EnergyExcelerate Acadia (Floating Storage & Regasification Unit)Apr 2026
ZumtobelRemanufacturing service (Service)Mar 2026
Contract wins
226 customer wins · last 24 months
Subsea Integration Alliancewon exxonmobilMay 2026
SLBwon equinorMay 2026
Workforce actions
28 companies cutting roles · last 24 months
Ultium Cells~700 roles reported · business downturnMar 2026
California Resources Corporation~56 roles reported · cost reductionFeb 2026
Regulatory & litigation
92 regulatory events · 36 tracked suits · 24 months
Mid-Atlantic Cooperative Solutionsfinal order approving Arrangements — Supreme Court of British ColumbiaMay 2026
- pomerantz llp v babcock & wilcox enterprisessecurities fraud · FiledApr 2026
- vineyard wind v ge vernovacontract termination dispute involving off-shore wind project · OngoingApr 2026
Earnings pulse
companies reporting results · last 24 months
414 companies reporting5,258 company-quarters trackedbeat 1168miss 464in line 105
Half of these companies grew revenue faster than +6.0%, half slower.
Who is building Energy in the United States
There are 4,585 founders and CEOs across 4,008 firms, with Stanford (51 alumni) and MIT (46) most represented, and former employers like McKinsey (8) and Goldman Sachs (7).
Founders and chief executives12 of 4,585, from the best-funded companies on this page
University of Colorado BS, University of Colorado-Denver MS
Partner-Tupper Lake Partners. Harvard Business School MBA, Texas A&M University BS.
ex-Indianapolis Colts. Texas Tech University - Rawls College of Business BBA 2003, Texas Tech University - Rawls College of Business MS 2004
University of North Carolina at Chapel Hill JD 1998
Founder Sunnova Energy Corporation, ex- Founder SunCap Financial & Standard Renewable Energy, Enron Energy Services…
Ex-SkyGen Energy, he Deerpath Group, Arthur Andersen.
CEO Sustainable Power Group. University of Utah
Energy Advisory Council. Texas A&M University BS, University of Texas MBA
Six One Commodities, ex-Noble, ex-Rbs Sempra Commodities, University of Adelaide, 1995
Where the founders studied
alma mater on record for 349 of 4,585 founders
Stanford University51
Massachusetts Institute of Technology46
Harvard University40
Harvard Business School21
University of California (Berkeley)21
Cornell University20
University of Pennsylvania18
Yale University17
Where they worked before
a previous employer on record for 29 of 4,585 founders
McKinsey8
Goldman Sachs7
Morgan Stanley5
Intel2
Airbnb2
Amazon2
Microsoft1
Google1
Founders flagged as repeat founders
of 2,809 founders with a profile on this page
7
carry a repeat-founder flag
- flagged as repeat founders7
- no repeat-founder flag2,802
Women and men among the founders
first names matched for 4,310 of 4,585 founders
7%
of matched founders are women
- women298
- men4,012
Inferred from first names, using 119 million people who state their own gender: a first name counts only where at least 20 of them share it and at least 90% of those share the same gender. The other 275 founders go in neither column.
Radar
Look up the people behind Energy companies in the United States
Search founders, executives and operators by company, role and location.
Who funds Energy in the United States
Since 2016, 3,008 funding rounds have been recorded from 1,345 investors, with a typical round size of $2.5 million.
| Investor · most active investors since 2016 | Rounds | Led | Latest |
|---|---|---|---|
| OSTI | 222 | — | Dec 2025 |
| Europa | 86 | — | Sep 2023 |
| National Science Foundation | 53 | 1 | Sep 2025 |
| United States Department of Agriculture | 51 | — | Jul 2025 |
| DOE | 44 | — | Feb 2026 |
| CalSEED | 25 | 1 | May 2022 |
| Breakthrough Energy | 24 | 7 | Feb 2026 |
| Climate Capital | 22 | 13 | Oct 2024 |
| America’s Seed Fund | 19 | — | Feb 2021 |
| NGP | 17 | 4 | Nov 2025 |
Stage mix · rounds since 2016
Seed & Angel675
Series A–B524
Series C+ / PE342
Grants, debt & other1,467
The typical round is $2.5M — half were bigger, half smaller.
The biggest Energy funding rounds in the United States
The largest disclosed round is a $1.8 billion Series B by CFS, and ten other large rounds are listed.
| Company | Round | Size | When | Backers |
|---|---|---|---|---|
| Series Bmega-round | $1.8B | Dec 2021 | Bill Gates, George Soros, Tiger Global Management +27 more | |
| Series Dmega-round | $1.4B | May 2023 | — | |
| Series Emega-round | $1.2B | May 2026 | Idemitsu Kosan, TAEF | |
| Series Dmega-round | $1B | Oct 2025 | CPP Investments | |
| Series Bmega-round | $863M | Aug 2025 | Brevan Howard, Morgan Stanley, Stanley Druckenmiller +33 more | |
| Series Fmega-round | $775M | Jan 2022 | Manulife Investment Management, Mountain Group Partners, Shell +1 more | |
| Series Dmega-round | $750M | Jun 2022 | The Rise Fund, CAI, Trilantic Capital Partners North America | |
| Series Cmega-round | $750M | Aug 2022 | SK | |
| Series Dmega-round | $700M | Nov 2025 | Jane Street, ARK Investment Management, Galvanize +9 more | |
| Series Dmega-round | $650M | Jun 2025 | NVentures, Hd-Hyundai |
Venture round sizes · 2023–2025
<$1M115
$1–10M130
$10–50M84
$50–250M32
>$250M23
384 venture rounds with a disclosed amount in the window.
Fresh cheques · last 6 months
Series E$1.2BMay 2026
Post IPO$600MMay 2026
Conventional Debt$600MMay 2026
Conventional Debt$500MMay 2026
Post IPO$42MMay 2026
Conventional Debt$35MMay 2026
PEundisclosedMay 2026
Grant (prize money)undisclosedMay 2026
What the news says about Energy in the United States
Over the last year, 425,263 news articles covered the sector, focusing on oil and gas market trends, solar PV systems, geopolitical supply factors and new product launches.
News volume
Energy coverage across United States · articles per quarter
2021Q22026Q1
peak 155,727 in 2025Q1 · 425,263 articles in the last 12 tracked months
Tone of coverage
share of articles by dominant sentiment (positive / neutral / negative)
202120232025
Positive-tone share moved 62% → 62%, negative 37% → 37% across 2021–2025.
What the coverage is about
The subjects that dominate Energy news in United States. The arrow shows whether each one is being written about more or less than a year ago.
- Oil and gas market trends61,005▲+127%
- Solar photovoltaic (pv) energy systems32,121→+5%
- Geopolitical factors in oil supply31,993▲+294%
- New product launches and innovations20,195▲+15%
- Professional league updates19,691→-4%
- Climate change mitigation strategies19,393→-6%
- Sustainability initiatives and esg reporting18,625▼-12%
- Strategic partnerships and collaborations18,136▲+25%
- Renewable energy sources and technologies18,066→-3%
- Natural gas liquefaction processes15,804▲+76%
Most-covered companies · last 12 months
- 11,142
- 10,211
- 2,694
- 2,452
- 1,943
- 1,652
- 1,615
- 1,464
- 1,417
- 1,375
693 Energy companies here were named in the news over this period.
Prism
Watch Energy coverage in United States as it happens
Prism follows these subjects story by story — which companies are named, what is said about them and how the tone moves.
Momentum
The words getting louder — and quieter
Which terms are showing up in more stories than a year ago, and which are fading. The percentage is the change in how many articles mention them.
oil price volatility+101%commodity trading+111%export sanctions+227%opec policies+222%crude oil prices+45%tanker routing+814%aframax tankers+614%suezmax tankers+413%fuel price disparities+55%cross-country pipelines+46%
fire impact study-74%wildfire control-72%fire suppression-76%organic recycling-33%hurricane mitigation-56%
The pressures the press keeps returning to
Three recurring angles in United States Energy coverage, and whether each is getting more attention year on year (through 2025).
Regulatory Risk ▲ rising
464,159 articles touch this dimension · 50.7% critical tone
20212025
signals: clean energy mandates, solar electricity generation, stock performance
Funding Momentum ▲ rising
118,174 articles touch this dimension · 43.6% critical tone
20212025
signals: solar electricity generation, investment deal, solar pv
Growth ▲ rising
187,250 articles touch this dimension · 42.7% critical tone
20212025
signals: dc fast-charging deployment, charging corridor development, pipeline construction
Energy jobs in the United States: who is hiring and what they ask for
Companies posted 51,161 jobs in the past year, most often requiring Excel, Microsoft Office and AutoCAD skills, with a median advertised salary of $80 k per year.
51,161postings · last 12 months
77,960postings tracked overall
1,828employers advertising
$80kmedian advertised salary/yr (n=6449)
Demand
The Skills Employers Ask For
What Energy employers in the United States put in their job ads. The bar is how many postings ask for it; the arrow shows whether demand grew or shrank against the year before.
- excel1,025▲
- microsoft office688▲
- autocad596▲
- word522▲
- hazmat endorsement485▲
- cdl448▲
- hvac396▲
- microsoft office suite381▲
- tanker endorsement341▲
- electrical engineering339▲
What level are these roles?
Entry2,694
Intern1,759
Senior6,538
Lead1,973
Manager11,798
What they pay, by level
- Manager$115k/yr (n=1076)
- Senior$115k/yr (n=555)
- Entry$69k/yr (n=414)
- Lead$110k/yr (n=194)
- Intern$53k/yr (n=50)
Most advertised titles
- 1,306
- 403
- 332
- 285
- 276
- 276
What Energy research in the United States is working on
Researchers from India contributed 5,941 papers, of which 4,401 identify opportunities, 607 discuss common problems, and 191 issue cautions.
How this field talks about itself
United States-affiliated Energy papers (gold) against all published research (grey)
Promising41.5% · 37.6%≈ par
Breakthrough32.6% · 25.7%1.3×
Problem-identifying9.8% · 9.4%≈ par
Descriptive8.1% · 17.8%0.5×
Comparative4.4% · 3.9%≈ par
Cautionary3.2% · 4.6%0.7×
How the work is done
Methods-led56.4%
Empirical23.3%
Reviews16.8%
Position pieces2.9%
Theoretical0.6%
How the research reads
96% positive · 3% neutral · 1% negative, across 5,941 papers.
The institutions doing the work · United States
- 45k
- 44k
- 33k
- 31k
- 31k
- 28k
ranked by how often their work is cited
Leading researchers · United States-affiliated work
Bruce Dunn · Patrice Simon · Yury Gogotsi · Haresh Kamath · Jean‐Marie Tarascon · Arumugam Manthiram · Yi Cui · John B. Goodenough
The most-cited breakthroughs
- Challenges and Prospects of Lithium–Sulfur Batteries · 2k cites
- Smaller Sulfur Molecules Promise Better Lithium–Sulfur Batteries · 2k cites
- Stretchable, Porous, and Conductive Energy Textiles · 1k cites
- Three-dimensional holey-graphene/niobia composite architectures for ultrahigh-rate energy storage · 1k cites
- Rechargeable nickel–3D zinc batteries: An energy-dense, safer alternative to lithium-ion · 1k cites
Common problems researchers identify588 papers · 7 recurring themes
Problems · theme 01
Challenges in Large‑Scale Energy Storage
141 papers · 24.0% of this block
▲ +38% share2022→2025 share of research on this subject
Researchers highlight technical and integration barriers limiting storage of renewable and thermal energy.
Energy storage · Renewable energy · Energy · Thermal energy storage
“History, Evolution, and Future Status of Energy Storage”
141 of these papers raise it as a problem
Problems · theme 02
Battery Chemistry Limitations
100 papers · 17.0% of this block
▲ +8% share2022→2025 share of research on this subject
Issues with anode, cathode, and electrolyte design impede performance of sodium and lithium batteries.
Anode · Cathode · Battery · Electrochemistry
“Room‐Temperature Sodium–Sulfur Batteries and Beyond: Realizing Practical High Energy Systems through Anode, Cathode, and Electrolyte Enginee”
100 of these papers raise it as a problem
Problems · theme 03
Renewable Power‑Grid Compatibility
91 papers · 15.5% of this block
▲ +33% share2022→2025 share of research on this subject
Studies point to difficulties coupling photovoltaics, wind, and EV charging with existing grids.
Electric power system · Renewable energy · Photovoltaic system · Electric vehicle
“A Review of Hybrid Renewable/Alternative Energy Systems for Electric Power Generation: Configurations, Control, and Applications”
91 of these papers raise it as a problem
Problems · theme 04
Nanomaterial‑Based Supercapacitor Hurdles
88 papers · 15.0% of this block
▼ -24% share2022→2025 share of research on this subject
Barriers in nanotech fabrication and stability restrict next‑generation electrochemical storage devices.
Supercapacitor · Nanotechnology · Energy storage · Electrochemical energy storage
“Energy storage: The future enabled by nanomaterials”
88 of these papers raise it as a problem
Problems · theme 05
Electrolyte and Diagnostic Gaps
79 papers · 13.4% of this block
▲ +2% share2022→2025 share of research on this subject
Limited understanding of electrolyte behavior and lack of robust diagnostics slow battery advancement.
Electrolyte · Electrochemistry · Battery · Lithium
“Challenges in Developing Electrodes, Electrolytes, and Diagnostics Tools to Understand and Advance Sodium‐Ion Batteries”
79 of these papers raise it as a problem
Problems · theme 06
Energy‑Density Ceiling for Batteries
60 papers · 10.2% of this block
▲ +37% share2022→2025 share of research on this subject
Current lithium‑ion and lithium‑oxygen technologies approach fundamental limits on stored energy.
Battery · Lithium · Energy storage · Energy density
“Electrical energy storage for transportation—approaching the limits of, and going beyond, lithium-ion batteries”
60 of these papers raise it as a problem
Problems · theme 07
Redox Flow Battery Development Issues
29 papers · 4.9% of this block
▲ +13% share2022→2025 share of research on this subject
Material stability, cost, and membrane performance hinder scalable flow‑type storage solutions.
Flow battery · Redox · Vanadium · Energy storage
“Recent Progress in Redox Flow Battery Research and Development”
29 of these papers raise it as a problem
Cautions184 papers · 4 recurring themes
Cautions · theme 01
Grid Reliability Under High Renewables
58 papers · 31.5% of this block
▲ +35% share2022→2025 share of research on this subject
Authors warn that climate impacts and storage scarcity could threaten grid adequacy.
Renewable energy · Photovoltaic system · Grid · Wind power
“Potential Impacts of Climate Change on Renewable Energy and Storage Requirements for Grid Reliability and Resource Adequacy”
58 of these papers raise it as a problem
Cautions · theme 02
Storage Integration Trade‑offs
57 papers · 31.0% of this block
▲ +15% share2022→2025 share of research on this subject
Caution is urged over efficiency losses and system complexity when adding storage to intermittent sources.
Energy storage · Energy · Thermal energy storage · Hydrogen storage
“Electricity storage for intermittent renewable sources”
57 of these papers raise it as a problem
Cautions · theme 03
Lithium Battery Safety Concerns
40 papers · 21.7% of this block
▲ +8% share2022→2025 share of research on this subject
Thick electrodes and fast‑charge demands raise safety and degradation risks.
Anode · Cathode · Electrolyte · Lithium
“Electrode Materials for Rechargeable Sodium‐Ion Batteries: Potential Alternatives to Current Lithium‐Ion Batteries”
40 of these papers raise it as a problem
Cautions · theme 04
Vanadium Flow Battery Reliability
29 papers · 15.8% of this block
▲ +13% share2022→2025 share of research on this subject
Voltage limits and membrane durability pose reliability challenges for vanadium redox systems.
Flow battery · Redox · Vanadium · Membrane
“Investigating Manganese–Vanadium Redox Flow Batteries for Energy Storage and Subsequent Hydrogen Generation”
29 of these papers raise it as a problem
Opportunities4,239 papers · 7 recurring themes
Opportunities · theme 01
Advanced Electrode Materials
1,077 papers · 25.4% of this block
▲ +8% share2022→2025 share of research on this subject
Innovations in cathodes, anodes, and solid‑state electrolytes promise higher performance batteries.
Cathode · Anode · Electrolyte · Lithium
“Progress in High‐Voltage Cathode Materials for Rechargeable Sodium‐Ion Batteries”
Opportunities · theme 02
Hybrid Storage‑Renewable Optimization
884 papers · 20.9% of this block
▲ +36% share2022→2025 share of research on this subject
Coordinated battery charging, swapping, and renewable integration can reduce costs and improve flexibility.
Energy storage · Renewable energy · Energy · Photovoltaic system
“Hybrid Energy Storage System Optimization With Battery Charging and Swapping Coordination”
Opportunities · theme 03
Smart Microgrid Energy Management
656 papers · 15.5% of this block
▲ +36% share2022→2025 share of research on this subject
Dynamic control of distributed resources enables efficient operation of solar‑battery microgrids.
Renewable energy · Microgrid · Photovoltaic system · Grid
“Dynamic Control and Optimization of Distributed Energy Resources in a Microgrid”
Opportunities · theme 04
Nanostructured Energy Conversion
637 papers · 15.0% of this block
▼ -26% share2022→2025 share of research on this subject
Nanomaterials offer pathways to higher capacitance and faster charge‑discharge cycles.
Dielectric · Energy storage · Nanotechnology · Electrochemical energy storage
“Nanomaterials for energy conversion and storage”
Opportunities · theme 05
Graphene‑Based Supercapacitors
425 papers · 10.0% of this block
▼ -31% share2022→2025 share of research on this subject
Graphene and metal‑oxide composites improve capacitance and cycle life for rapid‑response storage.
Supercapacitor · Capacitance · Graphene · Electrode
“Enhancing the Supercapacitor Performance of Graphene/MnO<sub>2</sub> Nanostructured Electrodes by Conductive Wrapping”
Opportunities · theme 06
Phase‑Change Thermal Storage
337 papers · 7.9% of this block
▲ +33% share2022→2025 share of research on this subject
Advanced phase‑change materials enable higher density thermal storage using solar and waste heat.
Thermal energy storage · Thermal · Energy storage · Phase-change material
“The development and performance evaluation of an alternative energy-based hybrid cold storage system”
Opportunities · theme 07
Next‑Generation Redox Flow Designs
223 papers · 5.3% of this block
▲ +13% share2022→2025 share of research on this subject
Organic and non‑aqueous chemistries expand performance horizons for flow batteries.
Flow battery · Redox · Vanadium · Flow
“An All‐Organic Non‐aqueous Lithium‐Ion Redox Flow Battery”
Which of these themes are growing fastest
This section tracks how the share of different research themes has changed globally from 2022 to 2025.
Problems
how much more (or less) of the world’s research on this subject each theme took up, 2022→2025
gaining sharelosing share
Challenges in Large‑Scale Energy Storage▲+38%
Energy‑Density Ceiling for Batteries▲+37%
Renewable Power‑Grid Compatibility▲+33%
Redox Flow Battery Development Issues▲+13%
Battery Chemistry Limitations▲+8%
Electrolyte and Diagnostic Gaps▲+2%
Nanomaterial‑Based Supercapacitor Hurdles▼-24%
Cautions
how much more (or less) of the world’s research on this subject each theme took up, 2022→2025
gaining sharelosing share
Grid Reliability Under High Renewables▲+35%
Storage Integration Trade‑offs▲+15%
Vanadium Flow Battery Reliability▲+13%
Lithium Battery Safety Concerns▲+8%
Opportunities
how much more (or less) of the world’s research on this subject each theme took up, 2022→2025
gaining sharelosing share
Smart Microgrid Energy Management▲+36%
Hybrid Storage‑Renewable Optimization▲+36%
Phase‑Change Thermal Storage▲+33%
Next‑Generation Redox Flow Designs▲+13%
Advanced Electrode Materials▲+8%
Nanostructured Energy Conversion▼-26%
Graphene‑Based Supercapacitors▼-31%
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About this data: built from Fliar's company, founder, funding, hiring, jobs, news and research trackers, covering the United States. Counts are of companies we track, not of every company that exists. Updated August 2026.
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