Tool Comparison
EIA Open Data vs Similarweb
- Paid from
- —
- Free plan
- Yes
- Platforms
- Web, API
Best if
- You want calendar and official sources.
- Paid from
- On request
- Free plan
- Yes
- Platforms
- Web, API
Best if
- You want app & website traffic.
Pick EIA Open Data if
EIA Open Data
Free · Web · API
- You want calendar and official sources.
Pick Similarweb if
Similarweb
Free • Contact for pricing · Web · API
- You want app & website traffic.
Skip both if: Neither one clicks with how you research; there are strong third options.
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Our take
The bottom line
EIA Open Data and Similarweb cover a lot of the same ground (3 shared categories, APIs & data feeds, data visualizations, and sheets / excel add-ins), so for the basics you won't go far wrong with either. EIA Open Data includes calendar and official sources, and Similarweb includes app & website traffic.
What readers say
EIA Open Data
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Similarweb
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Key differences at a glance
- Asset coverage
- EIA Open DataAdds commodities
- Free plan
- Both
What EIA Open Data does best
- Energy data across electricity, petroleum, natural gas, coal, renewables, nuclear, consumption, prices, reserves, and international markets.
- API v2 with hierarchical dataset discovery, facets, date filters, pagination, and JSON or XML responses.
- API v2 reads EIA's public databases directly and receives continuous, dataset-specific updates.
- Hourly electricity operating data alongside daily, weekly, monthly, quarterly, and annual statistical series where available.
- Bulk-file downloads, browser data tools, widgets, and a Microsoft Excel add-in.
What Similarweb does best
- Analysis of website traffic, engagement, channels, keyword demand, referral sources, competitors, company profiles, technologies, and app intelligence where plan access allows.
- Free public tools for high-level samples such as traffic checks, app analytics, keyword tools, top websites or apps, and company or technology profiles.
- Similarweb API V5 in REST or Batch mode with API-key authentication, standardized responses, multi-metric requests, MCP and AI support, and one key across endpoint families.
- Subscriptions to daily or monthly release notifications through webhooks where API workflow access is available.
- Export support for data through no-code Data Exporter, scheduled email delivery, CSV downloads, dashboards, tables, Excel, PDF, PPT, and PNG formats depending on product access.
Side by side
Pricing comparison
See for yourself
Side by side
Price, platforms, data, and market coverage.ShowHide
Side by side
| Attribute | ||
|---|---|---|
| Pricing & plans | ||
Starting price | Free | Free • Contact for pricing |
Free tier | Yes | Yes |
Free trial | — | — |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | No | No |
API access | Yes | Yes |
Integrations | Microsoft Excel Add-In | Microsoft Excel, Google Sheets +8 more |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Best for | Analysts, Quants/Developers +2 more | — |
Categories covered | 5 | 4 |
Regions | North America, Europe, APAC, LatAm, Middle East, Africa | North America, Europe, APAC, LatAm, Middle East, Africa |
| Data & capabilities | ||
Data quality | — | Latency: End of Day and Granularity: EOD |
Security | — | SOC2 and ISO27001 |
| Try it | Visit EIA Open Data | Visit Similarweb |
Standout features
The best features of EIA Open Data and Similarweb.ShowHide
Standout features
What EIA Open Data does best
- Energy data across electricity, petroleum, natural gas, coal, renewables, nuclear, consumption, prices, reserves, and international markets.
- API v2 with hierarchical dataset discovery, facets, date filters, pagination, and JSON or XML responses.
- API v2 reads EIA's public databases directly and receives continuous, dataset-specific updates.
- Hourly electricity operating data alongside daily, weekly, monthly, quarterly, and annual statistical series where available.
- Bulk-file downloads, browser data tools, widgets, and a Microsoft Excel add-in.
What Similarweb does best
- Analysis of website traffic, engagement, channels, keyword demand, referral sources, competitors, company profiles, technologies, and app intelligence where plan access allows.
- Free public tools for high-level samples such as traffic checks, app analytics, keyword tools, top websites or apps, and company or technology profiles.
- Similarweb API V5 in REST or Batch mode with API-key authentication, standardized responses, multi-metric requests, MCP and AI support, and one key across endpoint families.
- Subscriptions to daily or monthly release notifications through webhooks where API workflow access is available.
- Export support for data through no-code Data Exporter, scheduled email delivery, CSV downloads, dashboards, tables, Excel, PDF, PPT, and PNG formats depending on product access.
All details
Every attribute we track for EIA Open Data and Similarweb.ShowHide
All details
| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | CommoditiesOther | Other |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Target audience | AnalystsQuants/DevelopersInstitutional InvestorsStudents/Researchers | Not specified |
Regions | North AmericaEuropeAPACLatAmMiddle EastAfrica | North AmericaEuropeAPACLatAmMiddle EastAfrica |
Coverage details | Countries: US | Not specified |
| Data | ||
Data freshness | Not specified | End of Day |
Data granularity | Not specified | EOD |
| Access & integrations | ||
API protocols | REST | REST |
API auth & delivery | Auth: APIKeyDocs | Auth: APIKeyWebhooks |
Import methods | Not specified | CSV |
Integrations | Microsoft Excel Add-In | Microsoft ExcelGoogle SheetsGoogle Looker StudioTableauPower BISnowflakeDatabricksSalesforce+2 more |
Export formats | CSVExcelJSONXML | CSVExcelJSONPDFImage |
| Plans & trust | ||
Security & compliance | Not specified | SOC2ISO27001 |
Vendor & support | U.S. Energy Information Administration (EIA)Country: USSupport: Email and Phone | Similarweb Ltd.Support: Email |
Curation ratings | Not specified | Methodology 4/5Reliability 4/5UX 4/5 |
Green tags are exclusive to that tool in this comparison.
Pricing
Plans, billing, free trials, and monthly prices.ShowHide
Pricing
| Tier | ||
|---|---|---|
| Free plan | Free“Free public access” | Free |
| Entry paid plan | — | Subscription“Self-service packages” |
| Custom / enterprise | — | Contact sales“Business and Enterprise” |
Free alternatives
Questions we keep getting
What's the difference between EIA Open Data and Similarweb?
EIA Open Data leans toward APIs & data feeds, data visualizations, and calendar, while Similarweb puts more weight on app & website traffic, APIs & data feeds, and sheets / excel add-ins. They overlap in 3 categories, so for most people it comes down to workflow preference and price.
How much do EIA Open Data and Similarweb cost?
Good news: both EIA Open Data and Similarweb have free plans, so you can run them side by side and only pay if you hit a wall.
Do EIA Open Data and Similarweb have APIs?
Yes, both offer API access, so developers and quants can pull data programmatically or wire up their own integrations.
Should I choose EIA Open Data or Similarweb?
It depends on what you're after. Pick EIA Open Data if calendar and official sources matter to you; go with Similarweb if you'd rather have app & website traffic. And if you only need the basics both share, let price decide.
What asset classes do EIA Open Data and Similarweb cover?
Both cover other. EIA Open Data also handles commodities.
Can I export data from EIA Open Data and Similarweb?
Yes, both export to spreadsheets (CSV and Excel), which is handy if you like running your own numbers.
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Curation & Accuracy
This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).
Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.