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constellationenergy.com

https://constellationenergy.com· First analyzed 03 May 2026· Updated 03 May 2026
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constellationenergy.com
Desktop screenshot of constellationenergy.com
Mobile screenshot of constellationenergy.com
Mobile

Sponsored

Hosting Provider

CONSTELLATION ENERGY GENERATION, LLC

IP Address

159.214.199.37

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Oswego, United States

ASN

AS10953

Organization

CONSTELLATION ENERGY GENERATION, LLC

Server

Apache

CDN

Azure Cdn

Nameservers

ns4-38.azure-dns.info.ns1-38.azure-dns.com.ns2-38.azure-dns.net.ns3-38.azure-dns.org.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
686 ms10%
Speed Index
892 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
29.2 MB
46 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
CMS
Adobe Experience Manager
Infrastructure
Hosting
CONSTELLATION ENERGY GENERATION, LLC
CDN
Azure Cdn

Technology Stack

5 Technologies Detected

CSS Frameworks

2
Tailwind CSS
Ant Design

Analytics

1
Google Analytics

Tag Managers

1
Google Tag Manager

Web Servers

1
Apache

SEO Analysis

B74/100
22
4
1
Meta Tags9/15
Content9/12
Headings7/8
Technical22/25
E-E-A-T2/7
Images3/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
C
constellationenergy.comconstellationenergy.com

America's Leader in Clean Energy & Low-Carbon Solutions | Constella...

Discover how Constellation’s strategy and purpose makes us the nation’s largest producer of clean, reliable energy for homes, businesses and industries.

Title truncated.
Title Length71 chars

Recommended: 50-60 chars (~423px / 580px)

Description Length152 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (71 chars, ~423px). Will be truncated in search results.

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

675 URLs

robots.txt

4 rules

Sitemap reference found

Local SEO

Local Search Readiness

25/100
Needs Work
7 14

Sponsored

AI & LLM Readiness

D41/100
Bot Access
20/25
Machine Read.
8/25
Schema Data
3/25
Citation
10/25

AI Bot Access

14/14 accessible
AI Search
OAI-SearchBot
PerplexityBot
Claude-SearchBot
Gemini-Deep-Research
DuckAssistBot
Training
GPTBot
ClaudeBot
Google-Extended
Meta-ExternalAgent
Bytespiderinfo
Amazonbot
Applebot-Extended
CCBotinfo
Fetch
ChatGPT-User

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
nav
Text ratio:2%
Words:882
Token eff.:Optimal
Depth:1/5

Structured Data

1 JSON-LD
Organization×1.1
sameAs entity links

Citation Readiness

Opening Summary
Descriptive Headings
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
AI readiness recommendation preview...
Upgrade to view recommendations

Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
B
74/100
10
Passed
3
Critical
0
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
10/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
15/15
Verifies form fields have labels, error messages are clear, and inputs are properly associated.
Color & Contrast
15/15
Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
Keyboard & Focus
13/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
6/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 recommendations
  • •Accessibility recommendation preview...
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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
28/100
F
3.70 g
CO₂e / view
29.2 MB
Page Weight
5%
Cleaner Than
New Visitor
4.23 g
vs
Returning (cached)
2.11 g
Annual (10K/mo)
444.1 kg
Emission Segments
Data Center
827 mg
Network
888 mg
Device
1.99 g
Resource Breakdown
JavaScript
166.4 KB
Images
2.1 MB
CSS
399.1 KB
HTML
15.0 KB
Other
26.6 MB
Green Hosting Not Verified
CONSTELLATION ENERGY GENERATION, LLC
6 recommendations
  • •Carbon footprint recommendation preview...
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D

Security Score

41%Poor
Interactive

HTTPS

No WAF

180d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

15.04.2026

Valid Until

30.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

www.constellation.comconstellation.comadmin.constellation.comrenew.constellation.comsignup.constellation.comsmallbusiness.constellation.commy.constellation.comwww.my.constellation.com+12 more

SHA-256 Fingerprint

96:00:04:DC:B0:45:66:06:89:B2:18:A0:3B:BA:7D:C4:1E:71:FF:76...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
content-encoding
📦 Gzip(gzip)
content-type
text/html;charset=utf-8
date
Sun, 03 May 2026 10:13:07 GMT
etag
"20162-650b2ac75a76e-gzip"
last-modified
Thu, 30 Apr 2026 19:43:08 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

0

SPF
DKIM
DMARC

Domain Information

constellationenergy.com

Domain Age
27y 2m

Created

26.02.1999

Expires

26.02.2027

Last Updated

22.02.2026

Registrar

CSC Corporate Domains, Inc.

DNSSEC
Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner
OneTrust
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: OneTrust
Privacy policy page linked
Data Protection Officer mentioned

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
B
70/100
Mobile Friendly1 breakpoint
Viewport Meta
The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
Responsive Design
Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
Touch Icons
Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
Readable Font Size
Base font size should be at least 16px on mobile to ensure text is readable without zooming.
Relative Units
Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
No H-Scroll Risk
No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
Tap Targets OK
Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
No Fixed Widths
No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
Viewport
width=device-width, initial-scale=1
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

WorkSans

WCAG AA
72/100
Readability
/30
23/30

16px · LH 1.50

Hierarchy
/20
12/20

4.5x ratio

WCAG
/25
17/25

5.03:1 min contrast

Performance
/25
20/25

1 font · 3 req

Heading Font

WorkSans

Sans72px

Body Font

WorkSans

Sans16px

Contrast Ratio

5.03:1

WCAG AA (≥4.5:1)

Reading Comfort

~35 CPL

Narrow lines
72px
h1
56px
h2
40px
h3
16px
p

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 23/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.0:1).

❌ Broken heading hierarchy: 2 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

✅ Strong hierarchy: Headlines are 4.5x larger than body text.

Buy on MyFontsFlesch 23

Color Palette

12 unique colors
2.63:1 Fail Light
#d5d8d9
Other· 4.6%
#828483
Other· 3.7%
#111509
Primary· 15%
#f4f5f7
Secondary· 14.2%
#242815
Secondary· 13.100000000000001%
#576e80
Secondary· 9.2%
#29424a
Secondary· 9.100000000000001%
#6283a4
Secondary· 8.8%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

1
OneTrustEnterprise

Cookie consent and privacy compliance tools

2

Categories

3

Total Tools

1

Enterprise

0

Mid-Market

Assessment: Well-developed marketing technology stack

Sponsored

Scripts & Styles

11 Resources

8
Scripts
3
Styles
1
Async
1
Defer

Top Script Sources

local(4)cdn.cookielaw.org(2)googletagmanager.com(1)rum.hlx.page(1)

Website Identity

Constellation

Constellation

Organization
www.constellationenergy.com
27 years old

1310 Point Street, Baltimore, MD

21231, Baltimore, MD

Location detected: 🇺🇸 United Statesvia ip
CSC Corporate Domains, Inc.enEst. 2022

Sponsored

Last analyzed: 03 May 2026 at 10:13

Historical Analysis & Change Tracking