Sizable Energy

Sizable Energy is a Milan, Italy based clean-energy company developing offshore pumped hydro energy storage. Its patented system pairs subsea and floating reservoirs connected by pipes with reversible pump-turbines that move saturated sea-salt brine between them to deliver long-duration, grid-scale energy storage. The modular, scalable design leverages proven pumped-hydro technology with zero land use and integrates with floating wind and solar installations. It was added to the API Evangelist network as a portfolio company of Playground Global; as of this enrichment pass the company publishes no public API, developer portal, or SDKs.

Sizable Energy is profiled on the APIs.io network. Tagged areas include Company, Energy Transition, Energy Storage, Pumped Hydro, and Offshore.

Sizable Energy’s developer surface includes engineering blog and 3 more developer resources.

🌐 Visit website 📡 Source on GitHub
9.3/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyEnergy TransitionEnergy StoragePumped HydroOffshoreLong-Duration Energy StorageRenewable EnergyClean Energy

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 9.3/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.4 / 20
Commercial Clarity 2.1 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/sizable-energy: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Sizable Energy Domain Security

TLSv1.3 · DNSSEC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: sizable-energy
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/sizable-energy.png
name: Sizable Energy
description: Sizable Energy is a Milan, Italy based clean-energy company developing offshore pumped hydro energy storage.
  Its patented system pairs subsea and floating reservoirs connected by pipes with reversible pump-turbines that move saturated
  sea-salt brine between them to deliver long-duration, grid-scale energy storage. The modular, scalable design leverages
  proven pumped-hydro technology with zero land use and integrates with floating wind and solar installations. It was added
  to the API Evangelist network as a portfolio company of Playground Global; as of this enrichment pass the company publishes
  no public API, developer portal, or SDKs.
url: https://raw.githubusercontent.com/api-evangelist/sizable-energy/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- playground-global
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Energy Transition
- Energy Storage
- Pumped Hydro
- Offshore
- Long-Duration Energy Storage
- Renewable Energy
- Clean Energy
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://sizableenergy.com/
- type: DomainSecurity
  url: security/sizable-energy-domain-security.yml
- type: Blog
  url: https://sizableenergy.com/news
- type: PrivacyPolicy
  url: https://sizableenergy.com/privacy-policy
x-enrichment:
  date: '2026-07-21'
  status: minimal
  artifacts_added: 1
  pass: local-v1