Radar · Industry landscape · the United States
Energy Tech Industry Landscape of the United States
8,158 Energy Tech 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 September 2026.
8,158companies tracked
$183.9Bdisclosed funding
626hiring right now
6,426events · 24 months
414,834news articles · 12 months
Who leads Energy Tech in the United States
Tracks 8,158 U.S. energy‑tech firms, highlighting the top hiring firms, the best‑funded companies, and the 626 firms currently recruiting.
open roles
Hiring now
ranked by live open roles
- 01
Bloom Energy13last posted Aug 2026
- 02
Plug Power12last posted Jul 2026
- 03
Enverus12last posted Aug 2026
- 04
First Solar12last posted Aug 2026
- 05
Oceaneering International12last posted Aug 2026
- 06
Nextracker12last posted Aug 2026
- 07
Resideo11last posted Jun 2026
- 08
Rivian11last posted Jun 2026
626 companies hiring · 23 posted in the last 30 days
disclosed funding
Most funded
disclosed totals, all rounds
- 01Tesla$12.4BPost IPO · Feb 2024
- 02
- 03
BlueOval SK$9.2BConventional Debt · Jun 2023
- 04
VoltaGrid$5.9BSeries D · May 2026
- 05
Crusoe$4.6BConventional Debt · Feb 2026
- 06
View$4.2BPost IPO · Oct 2022
- 07
Faraday Future$4.2BPost IPO · Apr 2026
- 08
Lucid$3.3BPost IPO · Apr 2026
1,988 companies with disclosed rounds · $183.9B total
revenue
Revenue leaders
official filings first, else latest snapshot
- 01
tesla$22.4BFY2023 filing
- 02
Air Products$3.2BFY2023 filing
- 03
Vertiv$2.6BFY2026 filing
- 04
- 05
- 06
Acuity Brands$1.1BFY2026 filing
- 07
EnerSys$919.1MFY2024 filing
- 08
Nabors$783.5MFY2022 filing
88 companies with a revenue figure
headcount
Largest teams
ranked by tracked headcount
- 01
Schlumberger135,125tracked employees
- 02
KORE Power132,692tracked employees
- 03
- 04
trane29,600tracked employees
- 05
- 06
Orbia24,736tracked employees
- 07
- 08
646 companies with headcount data
share of events
Share of voice
share of all tracked sector news events, 24 months
- 01
- 02
- 03
Joby Aviation3.2%310 tracked events
- 04
- 05
- 06
Archer2.1%205 tracked events
- 07
- 08
9,720 tracked events across 568 companies
articles
In the news
Prism news coverage, last 12 months
- 01
ERP7,460articles in the window
- 02
Ballard3,601articles in the window
- 03
GasBuddy2,109articles in the window
- 04
SLB1,251articles in the window
- 05
NEP1,120articles in the window
- 06
Blue Tech1,102articles in the window
- 07
Raritan968articles in the window
- 08
668 of these companies drew sector coverage in the window
Radar
See all 8,158 Energy Tech companies in the United States
Filter by funding, headcount, hiring and location, and export the list.
How the Energy Tech ecosystem in the United States grew, 2016–2025
Shows annual company founding counts, with a peak of 446 new firms in 2019 and 43 in 2025.
Companies founded / year
new Energy Tech companies in the United States
20162025
peak 446 in 2019
Companies raising / year
with a disclosed round that year
20162025
peak 403 in 2022
Disclosed funding / year
sum of disclosed rounds (USD)
20162025
peak $25.4B in 2025
Where Energy Tech companies in the United States are based
Lists the cities with the most energy‑tech companies, led by Houston (372) and San Francisco (283).
Hub 01
Houston
372 Energy Tech companies
25% of the Energy Tech companies across these hubs
372companies
$6.9Bdisclosed funding
35hiring now
Hub 02
San Francisco
283 Energy Tech companies
19% of the Energy Tech companies across these hubs
283companies
$12Bdisclosed funding
45hiring now
Hub 03
New York City
218 Energy Tech companies
15% of the Energy Tech companies across these hubs
218companies
$4.6Bdisclosed funding
12hiring now
Hub 04
Los Angeles
176 Energy Tech companies
12% of the Energy Tech companies across these hubs
176companies
$7.2Bdisclosed funding
11hiring now
Hub 05
Austin
150 Energy Tech companies
10% of the Energy Tech companies across these hubs
150companies
$15.8Bdisclosed funding
12hiring now
generated artwork
Hub 06
San Diego
104 Energy Tech companies
7% of the Energy Tech companies across these hubs
104companies
$1.2Bdisclosed funding
8hiring now
Hub 07
Boston
95 Energy Tech companies
6% of the Energy Tech companies across these hubs
95companies
$3.6Bdisclosed funding
12hiring now
Hub 08
Chicago
94 Energy Tech companies
6% of the Energy Tech companies across these hubs
94companies
$757.5Mdisclosed funding
8hiring now
The Energy Tech market map of the United States: what these companies actually do
Breaks down product sub‑categories and revenue models, noting the largest groups such as enterprise tech (5,231 firms) and the most common models like physical commerce (3,420 firms).
- Enterprise Tech5,231 companies · $145.1B raised · 491 hiring
- Consumer Digital2,284 companies · $52.5B raised · 140 hiring
- Deep Tech1,878 companies · $73.6B raised · 188 hiring
- Green Transport1,810 companies · $70.6B raised · 114 hiring
- Enterprise Software1,664 companies · $20.8B raised · 143 hiring
- SaaS1,149 companies · $26.3B raised · 98 hiring
- Energy SaaS994 companies · $13.9B raised · 78 hiring
- Smart Buildings720 companies · $6.5B raised · 46 hiring
- Electric Vehicle Charging550 companies · $6.2B raised · 32 hiring
- Sustainable Batteries549 companies · $28.5B raised · 56 hiring
- Building Energy Management System497 companies · $3.2B raised · 29 hiring
- Digital Oilfield411 companies · $2.3B raised · 33 hiring
Monetization
How Energy Tech 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.
Physical Commerce3,420
Subscription3,092
E-Commerce - Product2,211
Fee-For-Service1,197
Commission on Transaction949
E-Commerce - Service410
Advertising248
Renting / Leasing70
Funding, M&A and the deals moving Energy Tech in the United States
Earnings 1,289Announcement 1,151Leadership 720Contracts 691Funding 657M&A 412Assets 380Lawsuit 249Jobs 193Capital 190
- M&AConsulting.us Arcadia, a Washington, DC-based provider of energy intelligence software for businesses, has agreed to acquire Engie Impact.2026-05-05
- IPOFervo Energy said on Monday it was targeting a valuation of up to US$6.5 billion in its initial public offering in the United States. The Houston-based energy developer also said it is aiming to raise up to $1.3 billion in the IPO by offering 55.6 million shares priced between $21 and $24 apiece.2026-05-04
- FundingReliON closes a $3M financing round2026-05-01
- FundingUber in 2025 will invest up to US$1.25bn in Rivian through 2031 conditional on milestone achievement, with an initial US$300m investment expected to close in the second quarter.2026-05-01
- M&AStem announced it has acquired software assets from raicoon, a solar fault-detection software provider, in a tech M&A deal.2026-04-29
- M&AJohnson Controls International PLC has acquired Nantum AI, a building operations and energy optimization software vendor, in a tech M&A deal aimed at enhancing its smart building capabilities.2026-04-29
- FundingNexamp, a developer of solar and battery storage projects, secured a $200 million credit facility from Nuveen Energy Infrastructure Credit, acting as the sole lender. The facility is structured as a delayed-draw term loan, with an initial commitment of $125 million and the option to access an additional $75 million.2026-04-29
- M&ABanneker Partners announced it has acquired a majority stake in ResFrac, a hydraulic fracturing and reservoir simulation software specialist, in a tech M&A deal.2026-04-28
- M&AVertiv Acquires Strategic Thermal Labs2026-04-28
- FundingMadison Bond LLC is a primary stakeholder and long-term investor of Solidion Technology.2026-04-28
Mergers and acquisitions
Deals from the last 24 months where a Energy Tech 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 |
|---|---|---|---|---|
| Hon Hai Technology Group | undisclosed | Announced | 2026-05-11 | |
| undisclosed | Announced | 2026-05-05 | ||
| undisclosed | Announced | 2026-05-01 | ||
| undisclosed | Announced | 2026-04-29 | ||
| undisclosed | Announced | 2026-04-28 | ||
| Strategic Thermal Labs | undisclosed | Announced | 2026-04-28 |
Who is listing, hiring leaders, launching and winning work
Details specific event types such as IPO filings, leadership changes, product launches, and contract wins.
IPO pipeline
30 companies listed or filing · last 24 months
Fervo EnergyIPO · Nasdaq · FRVO · 3 reportsMay 2026
Factorial EnergySPAC · 1 reportApr 2026
eosIPO · EOSE · 2 reportsApr 2026
InnovexFollow-on Offering · NYSE · INVX · 1 reportFeb 2026
FuelCell EnergyFollow-on Offering · NASDAQ · FCEL · 1 reportJan 2026
Leadership moves
210 tracked people moves · last 12 months
Scoot NetworksVinod Kannan · Appointment → Chief Commercial OfficerMay 2026
KULR TechnologyDr. Mike Kimel · Appointment → Board DirectorApr 2026
IBCTim Banham · Appointment → Chief Commercial OfficerApr 2026
PinnacleJames Mitchell · Appointment → Sales DirectorApr 2026
POWWRMartin Eade · Appointment → Chief Operating OfficerApr 2026
Product launches
tracked launches · last 12 months
ProterraOnyx battery platform (Battery platform)May 2026
PDI TechnologiesPDIQ (AI foundation)Mar 2026
LiminalTeam SpacesMar 2026
WindrosePlug&Charge feature (Charging)Mar 2026
Contract wins
230 customer wins · last 24 months
Sinexcelwon Zhongfu IndustrialMay 2026
Workhorse Groupwon Gateway FleetsApr 2026
Workforce actions
33 companies cutting roles · last 24 months
Skipscale undisclosed · cost reductionApr 2026
Monarch Tractor~10% of workforce reported · cost reductionApr 2026
Regulatory & litigation
89 regulatory events · 34 tracked suits · 24 months
new energy riskapproved for tax credit insurance operations — Lloyd\'sMay 2026
Anthro Energyapproved for next phase of $24.9 million award — U.S. Department of Energy Office of Critical Minerals and Energy Innovation (DOE CMEI)Apr 2026
- dennis, leslie, tyler, Noelle Hansen, bradley, Jordan Nelson v UBS Financial Services Inc.arbitration award appeal · VerdictMay 2026
- purchasers of Eos Energy Enterprises, Inc. (NASDAQ: EOSE) co v Eos Energy Enterprisessecurities laws violations · FiledApr 2026
Earnings pulse
companies reporting results · last 24 months
112 companies reporting1,416 company-quarters trackedbeat 294miss 161in line 20
Half of these companies grew revenue faster than +11.1%, half slower.
Who is building Energy Tech in the United States
Profiles 4,428 founders and CEOs, noting frequent alma maters like Stanford (140) and common prior employers such as Google (22).
Founders and chief executives12 of 4,428, from the best-funded companies on this page
Co-Founder SpaceX, Neuralink & The Boring, ex-Co-Founder PayPal.
CEO Atieva, ex-Tesla Motors, CEO Lumina Office Products. University of Illinois at Urbana-Champaign
Ex-Google, Two Sigma · University of Otago BSc 2001, Carnegie Mellon University MS 2006
Ex-Co-Founder Valere Power, Bell Laboratories. Temple University BS, Duke University MS
PJC, ex-Upside, SparkCharge, Solar Energy Industries Association, Retroficiency. Brown University AB 1999, HBS MBA 2006, Harvard University MBA 2007
Worcester Polytechnic Institute. Tianjin University, University of Windsor PhD
Ex-Kinzon Capital, Tencent, NORICT Beijing, IBM. University of California Berkeley, Haas School of Business MBA 2005
Ex- BHP, Ford. Stanford University Graduate School of Business MBA 2017, The University of Tulsa BSc 2012
Founder Cover, Archer, ex-Vettery, Various Startups. University of Florida 2008
Where the founders studied
alma mater on record for 747 of 4,428 founders
Stanford University140
Massachusetts Institute of Technology120
Harvard University74
University of California (Berkeley)54
Cornell University46
Harvard Business School40
Columbia University32
University of Pennsylvania32
Where they worked before
a previous employer on record for 141 of 4,428 founders
Google22
Microsoft22
McKinsey19
Amazon14
Morgan Stanley12
Intel11
Goldman Sachs10
Apple9
Founders flagged as repeat founders
of 3,546 founders with a profile on this page
22
carry a repeat-founder flag
- flagged as repeat founders22
- no repeat-founder flag3,524
Women and men among the founders
first names matched for 4,045 of 4,428 founders
8%
of matched founders are women
- women322
- men3,723
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 383 founders go in neither column.
Radar
Look up the people behind Energy Tech companies in the United States
Search founders, executives and operators by company, role and location.
Who funds Energy Tech in the United States
Records 5,069 funding rounds since 2016 from 3,285 investors, with a typical round size of $3.2 million.
| Investor · most active investors since 2016 | Rounds | Led | Latest |
|---|---|---|---|
| OSTI | 389 | — | Dec 2025 |
| National Science Foundation | 112 | — | May 2025 |
| DOE | 88 | 1 | Apr 2025 |
| Climate Capital | 83 | 47 | Mar 2026 |
| Y Combinator | 71 | 28 | Jan 2026 |
| Europa | 69 | — | Mar 2024 |
| Breakthrough Energy | 65 | 20 | Jan 2026 |
| Energy Impact Partners | 58 | 28 | Feb 2026 |
| Techstars | 56 | 28 | Mar 2026 |
| America’s Seed Fund | 49 | — | Sep 2024 |
Stage mix · rounds since 2016
Seed & Angel1,363
Series A–B1,511
Series C+ / PE608
Grants, debt & other1,587
The typical round is $3.2M — half were bigger, half smaller.
The biggest Energy Tech funding rounds in the United States
Highlights the largest disclosed round—Rivian’s $2.6 billion Series E—and lists ten other large recent rounds.
| Company | Round | Size | When | Backers |
|---|---|---|---|---|
| Series Emega-round | $2.6B | Jan 2021 | T. Rowe Price, Coatue, Fidelity Investments +1 more | |
| Series Emega-round | $2.5B | Jul 2021 | The Climate Pledge, Ford, T. Rowe Price +4 more | |
| Series Emega-round | $2.5B | Jul 2020 | T. Rowe Price, Coatue, Amazon +3 more | |
| Series Emega-round | $1.4B | Oct 2025 | Valor Equity Partners, Mubadala, Nvidia +3 more | |
| Series Dmega-round | $1.3B | Dec 2019 | T. Rowe Price, Ford, BlackRock +1 more | |
| Series Hmega-round | $1.1B | Nov 2018 | SoftBank Vision Fund | |
| Series Cmega-round | $1B | Oct 2025 | Addition, CapitalG, Spark Capital +7 more | |
| Series Dmega-round | $1B | Sep 2018 | Public Investment Fund | |
| Series Amega-round | $1B | Sep 2022 | Vision Ridge Partners, Keyframe, Cyrus Capital Partners | |
| Series Bmega-round | $940M | Feb 2019 | SoftBank Vision Fund |
Venture round sizes · 2023–2025
<$1M148
$1–10M292
$10–50M238
$50–250M85
>$250M21
784 venture rounds with a disclosed amount in the window.
Fresh cheques · last 6 months
Series A$65MMay 2026
Series A$64MMay 2026
Conventional Debt$35MMay 2026
Series G$15MMay 2026
Series A$12.5MMay 2026
Seed$10MMay 2026
Series A$5.3MMay 2026
What the news says about Energy Tech in the United States
Indexes 414,834 news articles from the last year, covering topics such as oil and gas market trends, solar PV systems, and new product launches.
News volume
Energy Tech coverage across United States · articles per quarter
2021Q22026Q1
peak 151,711 in 2025Q1 · 414,834 articles in the last 12 tracked months
Tone of coverage
share of articles by dominant sentiment (positive / neutral / negative)
202120232025
Positive-tone share moved 66% → 66%, negative 33% → 33% across 2021–2025.
What the coverage is about
The subjects that dominate Energy Tech 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 trends61,003▲+128%
- Solar photovoltaic (pv) energy systems32,121→+5%
- Geopolitical factors in oil supply31,991▲+296%
- New product launches and innovations22,127→+9%
- Strategic partnerships and collaborations19,536▲+20%
- Professional league updates19,455→-4%
- Climate change mitigation strategies19,136→-6%
- Lunar and martian exploration missions18,791▲+84%
- Renewable energy sources and technologies18,558→-2%
- Sustainability initiatives and esg reporting18,360▼-14%
Most-covered companies · last 12 months
- 7,460
- 3,601
- 2,109
- 1,251
- 1,120
- 1,102
- 968
- 885
- 850
- 771
668 Energy Tech companies here were named in the news over this period.
Prism
Watch Energy Tech 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+104%commodity trading+114%export sanctions+227%opec policies+220%tanker routing+815%aframax tankers+625%artemis program+1127%suezmax tankers+420%fuel price disparities+51%cross-country pipelines+48%
fire impact study-74%wildfire control-74%fire suppression-77%organic recycling-34%solar hydrogen-33%
The pressures the press keeps returning to
Three recurring angles in United States Energy Tech coverage, and whether each is getting more attention year on year (through 2025).
Regulatory Risk ▲ rising
447,887 articles touch this dimension · 49.4% critical tone
20212025
signals: clean energy mandates, solar electricity generation, oil price volatility
Funding Momentum ▲ rising
124,971 articles touch this dimension · 44.4% critical tone
20212025
signals: satellite telecommunication, solar electricity generation, satellite ground stations
Growth ▲ rising
184,602 articles touch this dimension · 41.6% critical tone
20212025
signals: dc fast-charging deployment, charging corridor development, pipeline construction
Energy Tech jobs in the United States: who is hiring and what they ask for
Aggregates 15,850 job postings from 824 firms, noting top skills like Excel and Python and a median advertised salary of $94 k per year.
15,850postings · last 12 months
26,071postings tracked overall
824employers advertising
$94kmedian advertised salary/yr (n=2496)
Demand
The Skills Employers Ask For
What Energy Tech 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.
- excel459▲
- python397▲
- sql240▲
- kubernetes219▲
- aws208▲
- microsoft office176▲
- react160▲
- typescript157▲
- word156▲
- salesforce140▲
What level are these roles?
Entry424
Intern341
Senior2,127
Lead693
Manager3,852
What they pay, by level
- Manager$118k/yr (n=350)
- Senior$135k/yr (n=226)
- Lead$134k/yr (n=66)
- Entry$60k/yr (n=42)
Most advertised titles
- 316
- 248
- 162
- 118
- 117
- 103
What Energy Tech research in the United States is working on
Summarizes 5,941 U.S. academic papers, with most focusing on opportunities (4,401 papers) and fewer on cautions (191 papers).
How this field talks about itself
United States-affiliated Energy Tech papers (gold) against all published research (grey)
Promising41.5% · 36.6%≈ par
Breakthrough32.6% · 26.6%1.2×
Problem-identifying9.8% · 9.4%≈ par
Descriptive8.1% · 17.7%0.5×
Comparative4.4% · 4.0%≈ par
Cautionary3.2% · 4.8%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
Energy Storage System Challenges
141 papers · 24.0% of this block
▲ +38% share2022→2025 share of research on this subject
Researchers highlight barriers and limitations in current thermal and renewable energy storage technologies.
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 Electrode Chemistry Issues
100 papers · 17.0% of this block
▲ +8% share2022→2025 share of research on this subject
Studies point to difficulties in anode, cathode, and electrolyte design for 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
Integration of Renewables with Power Grids
91 papers · 15.5% of this block
▲ +33% share2022→2025 share of research on this subject
Papers discuss obstacles in coupling photovoltaic, wind, and electric vehicle loads to 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 Limits
88 papers · 15.0% of this block
▼ -24% share2022→2025 share of research on this subject
Research flags performance and scalability concerns for nanotechnology‑enabled 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 Tool Gaps
79 papers · 13.4% of this block
▲ +2% share2022→2025 share of research on this subject
Authors note insufficient electrolyte formulations and diagnostic methods for advancing sodium‑ion and lithium batteries.
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 Constraints in Batteries
60 papers · 10.2% of this block
▲ +37% share2022→2025 share of research on this subject
Works identify the approaching limits of lithium‑ion systems and the need for higher‑density alternatives.
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 Hurdles
29 papers · 4.9% of this block
▲ +13% share2022→2025 share of research on this subject
Studies outline material stability and system efficiency challenges for vanadium and organic flow batteries.
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
Researchers caution about climate impacts and storage needs to maintain grid adequacy with large renewable shares.
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 Solutions for Intermittent Sources
57 papers · 31.0% of this block
▲ +15% share2022→2025 share of research on this subject
Papers warn of technical and economic risks when deploying thermal, hydrogen, and other storage for variable renewables.
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 Material Trade‑offs
40 papers · 21.7% of this block
▲ +8% share2022→2025 share of research on this subject
Analyses highlight safety, lifespan, and fast‑charge compromises linked to electrode thickness and lithium chemistry.
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
Flow Battery Voltage and Membrane Risks
29 papers · 15.8% of this block
▲ +13% share2022→2025 share of research on this subject
Works raise concerns about voltage limits and membrane durability affecting long‑term flow battery performance.
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 Cathode and Electrolyte Designs
1,077 papers · 25.4% of this block
▲ +8% share2022→2025 share of research on this subject
Research explores high‑voltage cathodes and solid‑state electrolytes to boost rechargeable battery performance.
Cathode · Anode · Electrolyte · Lithium
“Progress in High‐Voltage Cathode Materials for Rechargeable Sodium‐Ion Batteries”
Opportunities · theme 02
Hybrid Storage and Renewable Optimization
884 papers · 20.9% of this block
▲ +36% share2022→2025 share of research on this subject
Studies propose coordinated battery charging, swapping, and renewable integration to reduce electricity costs.
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
Papers present dynamic control strategies for distributed solar and storage within resilient microgrids.
Renewable energy · Microgrid · Photovoltaic system · Grid
“Dynamic Control and Optimization of Distributed Energy Resources in a Microgrid”
Opportunities · theme 04
Nanomaterial‑Enabled Energy Conversion
637 papers · 15.0% of this block
▼ -26% share2022→2025 share of research on this subject
Research highlights nanostructured dielectrics and pseudocapacitive materials for high‑performance storage.
Dielectric · Energy storage · Nanotechnology · Electrochemical energy storage
“Nanomaterials for energy conversion and storage”
Opportunities · theme 05
Graphene‑Based Supercapacitor Enhancements
425 papers · 10.0% of this block
▼ -31% share2022→2025 share of research on this subject
Works demonstrate graphene and metal‑oxide composites delivering higher capacitance and efficiency.
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 Innovations
337 papers · 7.9% of this block
▲ +33% share2022→2025 share of research on this subject
Studies develop hybrid thermal systems using solar and waste heat to increase storage density.
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 Batteries
223 papers · 5.3% of this block
▲ +13% share2022→2025 share of research on this subject
Research advances non‑aqueous and organic flow chemistries for higher energy density and stability.
Flow battery · Redox · Vanadium · Flow
“An All‐Organic Non‐aqueous Lithium‐Ion Redox Flow Battery”
Which of these themes are growing fastest
Tracks the changing share of research themes worldwide between 2022 and 2025.
Problems
how much more (or less) of the world’s research on this subject each theme took up, 2022→2025
gaining sharelosing share
Energy Storage System Challenges▲+38%
Energy Density Constraints in Batteries▲+37%
Integration of Renewables with Power Grids▲+33%
Redox Flow Battery Development Hurdles▲+13%
Battery Electrode Chemistry Issues▲+8%
Electrolyte and Diagnostic Tool Gaps▲+2%
Nanomaterial‑Based Supercapacitor Limits▼-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 Solutions for Intermittent Sources▲+15%
Flow Battery Voltage and Membrane Risks▲+13%
Lithium Battery Material Trade‑offs▲+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 and Renewable Optimization▲+36%
Phase‑Change Thermal Storage Innovations▲+33%
Next‑Generation Redox Flow Batteries▲+13%
Advanced Cathode and Electrolyte Designs▲+8%
Nanomaterial‑Enabled Energy Conversion▼-26%
Graphene‑Based Supercapacitor Enhancements▼-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 September 2026.
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