Booost

Notes compiled from publicly available sources. Last updated: 2026-10-11. Every figure is linked to the source it came from and dated. Verify against primary sources before relying on them.

TL;DR

Booost (Booost株式会社 / Booost, Inc.; corporate number 7010001167327) is a Tokyo-based company founded on 2015-04-15. It sells booost Sustainability, which it calls a "サステナビリティERP" (sustainability ERP): a SaaS platform for collecting, approving, calculating and disclosing ESG and greenhouse-gas data across corporate groups and supply chains, aimed mainly at large Japanese listed companies preparing for SSBJ disclosure. The same legal entity was registered as 株式会社日本新電力総合研究所, renamed booost technologies株式会社 on 2020-04-01 and Booost株式会社 on 2025-04-02 (NTA corporate number register; accessed 2026-10-11). The business started in electricity energy management and still lists a retail electricity registration (company profile; accessed 2026-10-11).

• Company-stated adoption: 95+ countries, about 6,500 companies (cumulative) and 197,000+ sites as of December 2025 (2026-01-14). In September 2025 the same metric read about 2,000 companies (2025-09-29) — see Notes.
• Latest round: シリーズC 1stクローズ, 7億円, from One Capital (lead) and プロネクサス, scheduled to complete 2026-03-31; the company says this brings funding since the Series A to 41.5億円 (2026-03-26). Earlier company figures for the same cumulative total do not add up — see Notes.
• Headcount: 100 in 2025 on the company's own chart, up from 55 in 2021 (company introduction deck; accessed 2026-10-11). As of November 2025, 47% of employees (excluding officers) were in product roles and 10% were foreign nationals (same deck).
• Engineering: PHP/Laravel (partly Python) backend, React.js / Vue.js / TypeScript frontend, MySQL, on AWS, per current job postings (HRMOS; accessed 2026-10-11); the company's Zenn articles describe a Laravel monolith with a new React SPA (2025-09-18). Engineering postings require Japanese; hybrid work with one office day a week (Wednesday) in Tokyo or Osaka.

Basic

Memberships and recognitions listed by the company: 一般社団法人 新経済連盟, スマートシティ官民連携プラットフォーム (observer), 日本気候リーダーズ・パートナーシップ (JCLP), Green x Digitalコンソーシアム, ロボット革命・産業IoTイニシアティブ協議会 and IFRS Sustainability Alliance (company profile); UN Global Compact signatory (2023-09-28); SBT validation of a 2035 net-zero target (2023-11-22); 第4回 IP BASE AWARD 奨励賞 (IP strategy page). The company was not on the J-Startup company list as of 2026-10-11.

Identity and legal entities

Registered head-office history: 千代田区丸の内1-3-1 → 丸の内1-6-2 (2016-12-16) → 永田町2-11-1 山王パークタワー (2018-01-16) → 品川区大崎1-6-4 (2022-12-14) (NTA register).

Market context as stated by the company

• SSBJ standards apply from the fiscal year ending March 2027 to TSE Prime companies with market capitalization of ¥3 trillion or more (about 70 companies), then ¥1 trillion or more (about 200), then ¥500 billion or more (about 300), with eventual application expected for all ~1,600 Prime companies (2026-04-15).
• The company coined "サステナビリティ2026問題" for what it describes as companies being late and insufficiently alarmed in preparing for mandatory disclosure, and launched a 「日本をSX先進国へ」 project around it in November 2024 (2024-11-28).
• In a company survey, 12.7% of companies said their SSBJ work was led by the CFO line, while sustainability departments led in 30.9%, the most common answer (2026-08-05).

Product

booost Sustainability is presented as an "統合型SXプラットフォーム" handling "1,200以上のデータポイント" across environment, social and governance, with multi-level approval flows across group companies and supply chains and design for third-party assurance (2026-03-26). Customers combine modules (deck, slide 37). Product pages are on booost-ai.com.

What it is and its feature areas

Standards-related claims made by the company: GRI Licensed Software & Tools Partner (2025-04-23); ABtC application certification for automotive/battery traceability (2025-04-14); conformance with PACT Technical Specifications V3 (2026-02-26) and PACT solution-provider membership from 2026-04-01 (2026-04-30); SGS Japan validation of booost PCF against ISO 14067 (2025-11-17).

Commercialization

• Sold as SaaS together with consulting ("Sustainability コンサルティングサービス") (company profile).
• The terms of service (revision effective 2025-08-20) set a one-year contract term from provisioning, renewing automatically unless either party gives notice three months before expiry, with fees per a separately supplied rate table. No public price list was found.
• booost CBAM is offered free of charge on request (2026-04-01, CBAM page).
• Indirect channels: the product was to be sold through 伊藤忠商事's divisions and CTC, including to about 270 consolidated 伊藤忠 group companies (2024-11-27); BIPROGY began offering it (2025-07-11); プロネクサス and Booost plan joint development and sales to both companies' customer bases, プロネクサス citing about 2,200 listed-company clients (2026-03-26).

Reported scale over time

Announced customers and partners

The 2026-01-14 release also names ダイキン工業, ニトリホールディングス, ブリヂストン, イオン and 荏原製作所 among customers with market capitalization of ¥500 billion or more. Government-commissioned work announced by the company includes METI's 令和7年度 battery-sustainability platform demonstration (2025-10-24) and a 令和7年度 METI decarbonization conference/survey project (2025-12-01).

Stated plans

• Series C use of funds: product development around booost Sustainability, booost Impact and booost Disclosure plus AI agents; joint development of an integrated disclosure platform with プロネクサス; hiring "AIエンジニアやプロダクト人材" and disclosure/regulation specialists (2026-03-26).
• Positioning as a "サステナビリティ×AIカンパニー", extending AI into data collection, quality control, disclosure drafting, regulatory updates, assurance preparation and financial-impact analysis (2026-07-01).
• Target of 20% share in each Prime market-cap tier (¥3 trillion, ¥1 trillion, ¥500 billion) (note, 2025-02-18).
• The recruiting deck states the company is aiming for an IPO and describes a long-term plan to spin off marketplace businesses as group companies (deck, slides 7 and 48); engineering postings refer to "数年後のIPOを見据えた" growth (HRMOS).

Founder

青井 宏憲 (Hirokazu Aoi) — founder, 代表取締役 (company profile).

• 2010: joined a consulting firm and led its smart energy business team (deck, slide 4). A company-authored PR TIMES STORY describes it as a "東証一部コンサルティング会社" where he managed the smart energy business team, without naming it (2024-11-28).
• 2015-04: established the company (deck, slide 4); the register shows it as 株式会社日本新電力総合研究所 until 2020 (NTA register). The company says it started in 2015, the year retail electricity was fully liberalized, with an electricity energy-management business (team page).
• No education history was found in company sources.

Selected leadership

Other officers on the team page: 柴田 学 (執行役員 CSuO), 青井 洸樹 and 中野 創 (執行役員), 鈴木 智博 (監査役). Advisors listed there: 宮田 善孝, 笹埜 健斗 (Keio SFC; 2024-06-04) and 田中 謙司 (University of Tokyo professor). Separately announced: former FSA Commissioner 栗田 照久 as 特別顧問 from 2025-09-24 (2025-09-29), and former Mercari Group CTO 若狭 建 as advisor (2024-04-03); neither appears on the current team page.

Member roles on the team page include プロダクト開発, プロダクトサイト開発, テクニカルサポート, プロフェッショナルサービス, ドメインエキスパート, 知財戦略, アライアンス and マーケットプレイス. The deck's org chart (slide 59) places a プロダクト開発本部 under the CTO, with a プロダクトマネジメント部 (energy-management/reduction, organization-level, product-level and design groups), an エンジニアリング部 (groups 1–6) and a consulting group; it also shows a トレーディング本部 under the CEO.

Funding

All three corporate Series B investors also signed capital and business alliance agreements: BIPROGY and パーソルビジネスプロセスデザイン on 2024-10-29 and 伊藤忠商事 on 2024-11-27. One Capital led both the Series B and the Series C; プロネクサス had signed a basic agreement on a strategic alliance in September 2025 before investing (2026-03-26). The Series B was announced together with the 「日本をSX先進国へ」 project and a survey of 600 people at Prime-listed companies; the Series C release describes it as a "1stクローズ", but no later close was found as of 2026-10-11. The company counts funding only "シリーズA以降"; no release describing earlier financing was found.

Engineering

Technology stack and platforms

Labelled by evidence type.

• Backend — confirmed by technical writing and postings: PHP with Laravel; postings say "PHP（一部Python）". A company Zenn article describes "Laravelをベースとしたモノリシックな構成" serving several services (2025-09-18); other Zenn posts cover Laravel upgrades and Carbon 3 (Zenn publication). An engineering-blog article on DDD uses a PHP GHG-emission aggregate as a teaching example (2025-06-27).
• Frontend — confirmed by technical writing: the existing product is an MPA built with Vue.js, TypeScript, Laravel Blade and Bootstrap 4; a new product uses a React SPA with TypeScript, Tailwind CSS, shadcn/ui, React Router, TanStack Query and react-hook-form, tested with Storybook and Vitest in GitHub Actions (2025-09-18). Postings list "React.js、Vue.js、TypeScript".
• Database — from postings: MySQL (Web Application Engineer).
• Cloud and infrastructure — postings and technical writing: AWS (EC2, RDS, ALB, GuardDuty, CloudWatch named in the SRE postings); IaC listed as "OpenTofu（terraform)" and Ansible in the SRE postings and "AWS cdk" and Docker in the EM posting. A December 2024 Zenn post said infrastructure was coded in AWS CDK, with partial migration to Terraform under consideration (2024-12-25).
• CI/CD — from postings: GitHub Actions, AWS CodePipeline/CodeBuild.
• Observability and security — postings and technical writing: New Relic (SRE posting; a 2026-05-19 Zenn post on New Relic Flex), Wiz (2025-06-13) and Vanta (SRE posting).
• AI development tools — from postings and the recruiting page: Claude / Claude Code, ChatGPT / Codex, Cursor, CodeRabbit for AI code review, Notion AI; the QA posting names GitHub Copilot instead of Claude Code (product-development recruiting page, QA posting).
• Collaboration: Slack, Asana, Gather (adopted in the development organization per 2024-10-29), Notion; design in Figma and Adobe XD.
• Standards and external data — confirmed by company releases: PACT data model and Technical Specifications V3; Open Data Spaces Protocols / ODS-RAM referenced by booost Data EX-PF (2026-06-11); METI's ウラノス・エコシステム (2024-06-14); AIST-IDEA emission factors updated via API (2026-05-12); XBRL.

The cloud region, container orchestration and any data-store other than MySQL are not stated in the reviewed sources.

Systems

The CTO says the server design, application design and implementation environment are built for large organizations with complex group structures of many entities and sites (note, 2024-11-27).

Technical background sought

From current HRMOS postings (Undated; accessed 2026-10-11):

• Web Application Engineer — required: 2+ years of web application development in PHP, Python, Ruby, Java or similar; detailed design through implementation and testing; RDB design and operation; Git/GitHub team development; work experience in Japanese at a Japanese company; interest in AI-assisted development. Preferred: PHP/Laravel, React.js/Vue.js/TypeScript, basic AWS (posting).
• Senior Engineer — required: 3+ years of backend development, frontend experience, requirements definition and basic design, improving quality through code review, development with AI tools. Preferred: AWS design and build, CI/CD, SaaS or enterprise products, leading a team (posting).
• Backend Tech Lead — required: 5+ years of B2B web development, RDBMS data modelling and operation, mentoring, mid- to long-term technical strategy. Preferred: container-based systems, performance tuning such as ISUCON, tech-lead decision ownership, test code, OSS contributions, climate/energy development. The role includes defining architecture "ドメイン駆動、クリーンアーキテクチャなど" (posting).
• SRE (leader / manager candidates) — required: design, build and operation of three-tier web architecture on AWS, Linux servers, Infrastructure as Code; the manager role adds managing 2–3 people and roadmap planning. Preferred: large-scale infrastructure, leading SRE practice (SLI/SLO), CI/CD, container architecture, Python 3 scripting (leader, manager).
• QA Engineer — required: 3+ years testing B2B web applications, test planning/design/execution, translating complex business domains into test design. Preferred: shift-left involvement, quality metrics, unit/API/E2E automation, non-functional testing (posting).
• Product Manager — required: B2B web product or project management, requirements definition with customers. Preferred: screen and DB design, enterprise services, mid- to large-scale SI project management, SQL; candidates from SIers or IT consulting are explicitly welcomed (posting).

Industry domain

The work sits on corporate sustainability disclosure and carbon accounting: ISSB/IFRS S1–S2, SSBJ, CSRD/ESRS, GRI and TCFD; GHG Protocol Scope 1–3 and emission-factor databases; product carbon footprints (ISO 14067, PACT); EU/UK CBAM, the EU ESPR and digital product passports, and battery traceability; XBRL and EDINET taxonomies; third-party assurance and internal control; and Japanese electricity markets (retail supply, JEPX, smart-meter data, renewable procurement).

Engineering postings state "入社時点でサステナビリティ領域の知識・経験は必要ございません" and that knowledge is acquired through training, work and certification support (Web Application Engineer). Climate or energy-industry development experience is listed as preferred for the Backend Tech Lead, SRE and EM roles; sustainability/energy experience is preferred for the Product Manager. The company says it encourages all employees to take サステナ経営検定 grade 2 and lists other supported certifications such as GX検定 and 炭素会計アドバイザー (deck, slides 63–64).

Working conditions

Notes

Not publicly disclosed

Search scope for the findings below (2026-10-11): booost.inc (sitemap, company, team, news, recruit pages), booost-ai.com (sitemap, product, legal, IP and security pages), the PR TIMES company page and RSS (200 most recent releases, plus older releases opened individually), note, the Zenn publication, Speaker Deck, HRMOS postings, the product-development Notion page, Green, Japan Dev and TokyoDev (TokyoDev returned a bot challenge); the NTA register, ISMS-AC and JIPDEC registries, the JPX new-listing page and the J-Startup list; GitHub organization lookups for booost, booost-tech, booost-technologies, booostinc, booost-inc, booost-ai, booosttech and booost-sustainability, plus user/organization search; INITIAL as a lead only. Searches used Booost, booost technologies, 日本新電力総合研究所 and product names in Japanese and English.

• Revenue, ARR and profitability. Not disclosed. One Capital's comment in the Series C release mentions ARR growth without a figure. No published financial-statement notice (決算公告) was found by web search; the 官報 itself was not searched.
• Series B amount and valuation. The Series B is disclosed only through cumulative totals, which do not reconcile (see below). No valuation is published by the company.
• Financing before the Series A. Not found.
• Current engineering headcount. Not published. The deck gives product roles as 47% of non-officer employees (2025-11), and the team page shows 24 member entries labelled プロダクト開発 or プロダクトサイト開発, some by initials only and four without names (accessed 2026-10-11); neither is an engineering count.
• Public price list and public API reference. Neither was found. The CBAM page mentions a "PACT技術仕様に準拠したAPI" without public documentation.
• Cloud region, hosting topology, status page or SLA. Not found.
• Open source. The GitHub organization jepco-system is named "Booost" and links to booost.inc; it has one public repository, pact-catalog, a TypeScript fork of wbcsd/pact-catalog described as "booostGX for pact-catalog", last pushed 2023-07-13. An organization named Booost-ai exists with no public repositories and no profile metadata; it could not be tied to the company. The org metadata lists no X account or email.
• Visa sponsorship, English-language engineering roles and new-graduate engineering hiring. None found in the postings reviewed.
• Turnover. Not published.

Inconsistencies across sources

• Cumulative funding since the Series A: 33.5億円 after the Series B (2024-11-28 release; deck, slide 8); 36.5億円 after the Series B (note, 2025-02-18); 41.5億円 after adding the 7億円 Series C 1st close (2026-03-26). 33.5 + 7 = 40.5 and 36.5 + 7 = 43.5; the company does not explain the differences.
• Series C timing: the deck's history slide says "2024年シリーズCで総額41.5億円の資金調達を実施" (slide 7), while its next slide and the release date the Series C to March 2026.
• Series A timing: announced 2022-02-02 (release); the extension release says the Series A was raised "2022年1月" (2022-04-07); the Series B release says the Series A round was completed in April 2022 (2024-11-28).
• Rename date: the register records the change to Booost株式会社 on 2025-04-02 (NTA); the company announced it as taking effect on 2025-04-15 (release).
• Name at founding: company materials say booost technologies was founded or established in April 2015 (deck, slide 7; PR TIMES STORY); the register shows the entity as 株式会社日本新電力総合研究所 until 2020-04-01.
• Customer count: about 2,000 companies in September 2025 (2025-09-29, SOC 2 Type 1 release) versus about 6,500 cumulative in December 2025 (2026-01-14); only the later figure is labelled cumulative, and neither release defines what counts as a company. Sites for end of October 2024 are given as 180,000+ in the Itochu release and 186,000+ in the Series B release a day later.
• ITR share for FY2024: 22.4% (forecast, ITR 2025 edition; 2025-07-01) versus 22.0% (ITR 2026 edition; 2026-04-15).
• Infrastructure as Code: AWS CDK with Terraform migration under consideration (Zenn, 2024-12-25); "AWS cdk" in the EM posting; "OpenTofu（terraform)" and Ansible in the SRE postings.
• Reduced hours for childcare: "小学4年生まで" on the recruiting page and deck, slide 62 versus "3歳に満たない子を養育する従業員" in the HRMOS posting.
• Hiring process: about three interviews and 2–4 weeks (recruiting page) versus 2–4 interviews and about a month (deck, slide 67).

Other

• Electricity origins. The company profile still lists a retail electricity registration (A0244) and JEPX trading membership, the deck's org chart includes a トレーディング本部, and the booost Energy Marketplace terms were revised on 2026-08-07 (company profile, terms). The 2022 Series A release described the products as ENERGY X ("CO2フリー電気の調達、供給が可能なクラウド型エネルギーマネジメントシステム") and ENERGY X GREEN (2022-02-02).
• Domains. Corporate site booost.inc since 2025-04-15; service site moved from booost-tech.com to booost-ai.com on 2026-07-01; some booost.inc links still point to booost-tech.com (accessed 2026-10-11).
• Release mix. Of the 20 most recent PR TIMES releases as of 2026-10-11, 12 announce seminars, community sessions, conferences, roundtables or speaking slots (PR TIMES company page). The company also runs the Sustainability Leadership Community (SLC), which it says passed 1,000 members (2026-04-03).
• Speaker Deck dating. The company introduction deck shows a 2025-04-14 posting date but contains figures as of November 2025 and March 2026; it is cited here as accessed 2026-10-11.
• Tech talks. Company engineers wrote about speaking at PHPerKaigi 2025 and 2026 and PHP conferences in Kansai, Fukuoka and Hokkaido (Zenn publication).

Resources

Official

• Corporate site (JA) · EN
• Company profile · Team · News · Recruit
• Service site — booost Sustainability
• booost GX · booost Energy · booost PCF · booost Disclosure · booost Impact
• booost Data EX-PF · booost CBAM · AI · Energy Marketplace
• Terms of service · Energy Marketplace terms · Information security policy · IP strategy
• Product-development recruiting page (Notion)
• HRMOS job listings — Web Application Engineer, Senior Engineer, Backend Tech Lead, EM, SRE leader, SRE manager, QA Engineer, Product Manager
• Zenn publication (JA) — frontend selection in a Laravel monolith, SRE team, New Relic Flex, Wiz, DDD with GHG emissions, Gather
• note (JA) — CTO interview, Series B investor endorsements
• Company introduction deck (Speaker Deck, JA)
• GitHub organization jepco-system · pact-catalog fork

Press releases (PR TIMES, JA — newest first)

• Company page and full release index
• Product Compliance Suite — 2026-08-28
• 伊藤忠ファッションシステム ESPR-T project — 2026-08-27
• booost DPP — 2026-08-26
• SSBJ survey — 2026-08-05
• 大日本印刷 adoption — 2026-07-23
• SGホールディングス with ABeam — 2026-07-22
• Sustainability × AI and domain change — 2026-07-01
• booost Data EX-PF update (ODP) — 2026-06-11
• 岡村 articles — 2026-06-03
• AIST-IDEA API integration — 2026-05-12
• AI functions — 2026-04-30
• PACT solution-provider member — 2026-04-30
• ITR share, second year — 2026-04-15
• SLC passes 1,000 members — 2026-04-03
• booost CBAM free — 2026-04-01
• Series C 1st close, 7億円 — 2026-03-26
• SOC 2 Type 2 — 2026-03-03
• PACT Technical Specifications V3 conformance — 2026-02-26
• booost Data EX-PF — 2026-02-26
• About 6,500 companies — 2026-01-14
• 阪急阪神ホールディングス — 2025-12-23
• ERM alliance — 2025-12-16
• SOC 2 Type 1 — 2025-12-15
• METI decarbonization conference project — 2025-12-01
• booost Automotive — 2025-11-27
• booost PCF ISO 14067 validation — 2025-11-17
• booost Logistics — 2025-11-05
• METI battery platform project — 2025-10-24
• アシックス adoption — 2025-10-10
• Financial impact function — 2025-10-06
• プロネクサス basic agreement — 2025-09-30
• Multi-reporting and XBRL — 2025-09-30
• Special advisor 栗田 照久 — 2025-09-29
• booost Transition Driver — 2025-09-01
• booost Manufacturing — 2025-07-31
• BIPROGY resale — 2025-07-11
• ITR share 22.4% — 2025-07-01
• GRI Licensed Software & Tools Partner — 2025-04-23
• Rename to Booost — 2025-04-15
• ABtC certification — 2025-04-14
• CRO appointment — 2025-03-04
• アビームコンサルティング alliance — 2025-01-30
• デロイト トーマツ alliance — 2024-12-20
• Series B and 「日本をSX先進国へ」 project — 2024-11-28
• 伊藤忠商事 capital and business alliance — 2024-11-27
• BIPROGY and パーソルビジネスプロセスデザイン alliances — 2024-10-29
• Expansion into SX — 2024-10-22
• 日本ハム — 2024-09-24
• Smart-meter Scope 2 — 2024-07-02
• ウラノス・エコシステム — 2024-06-14
• Advisor 笹埜 健斗 — 2024-06-04
• トラスコ中山 — 2024-05-23
• Advisor 若狭 建 — 2024-04-03
• Advisor 岡村 — 2024-01-29
• SBT validation — 2023-11-22
• TSIホールディングス — 2023-10-17
• UN Global Compact — 2023-09-28
• シスコシステムズ partnership — 2022-03-15
• Series A extension — 2022-04-07
• Series A, 12億円 — 2022-02-02

Registries, coverage and profiles

• 国税庁 法人番号公表サイト — 7010001167327 (JA)
• ISMS-AC registry — JP24/00000231 (JA)
• JIPDEC Privacy Mark registry — 17003780 (JA)
• JPX new listings (JA) · J-Startup company list
• BRIDGE — Series C, 2026-03 (JA)
• PR TIMES STORY — CEO on the 2026 problem, 2024-11-28 (JA)
• Green — company page (JA)
• INITIAL / Speeda (JA)