https://powerhouseconsulting.group
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
70
GRADE
C
FIX
2
REVIEW
2
PASS
3
INFO
1
Checks
83 PASS 2 REVIEW 2 FIX
FCO2 Per Page LoadAction2.79g CO2 per viewFIX
CO2 Per Page Load
Action2.79g CO2 per view
2.79g CO2 per view
Critical::
2.79g CO2 per page view
This page transfers 11.8 MB, producing an estimated 2.79g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.07g, network 0.58g, end-user device 2.14g.
Got: 2.79g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 334.3 kg CO2/year
With 10,000 page views per month, this page would generate approximately 334.3 kg of CO2 annually — equivalent to charging 41783 smartphones.
Info::
Green hosting reduces data center emissions
2.79g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 11.8 MB
Your site
2.79g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.07g
Network
0.58g
End-user device
2.14g
At 10,000 monthly views: Monthly: 27.9 kg · Annual: 334.3 kg · ≈ 41783 smartphone charges
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
2.79g CO2 — above the median website (0.60g)
Heavier than an estimated 5% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 95th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
2.79g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 364% more
vs Target 457% more
BWeb Font Weight VariantsNo detectable Google Fonts weightsREVIEW
Web Font Weight Variants
No detectable Google Fonts weights
No detectable Google Fonts weights
Info::
No detectable Google Fonts weights
The analyzer detects font weights via Google Fonts URL parameters (~70% of font-using sites). Self-hosted fonts and non-Google CDN fonts aren't visible to URL-based detection. If you self-host fonts, manually audit how many @font-face weights you ship -- 2-3 weights per family is typically enough; 5+ is usually unused payload.
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
ActionWhether the site is served from green-energy infrastructure
Green Hosting
No green hosting detected
AGreen HostingGreen (cdn)PASS
Green Hosting
Green (cdn)
Green (cdn)
Info::
Cloudflare CDN uses renewable energy
Since most traffic is served through the CDN, the majority of data transfer energy is renewable.
Info::
Cloudflare: 100% renewable energy for global network since 2019
Info::
Green hosting status based on known provider commitments
Green hosting detection uses a curated database of provider renewable energy commitments. This is not a real-time verification. For authoritative checks, visit thegreenwebfoundation.org.
Green Hosting✓ Green Hosted
Hosting Not identified✗CDN Cloudflare✓
Cloudflare: 100% renewable energy for global network since 2019
Based on known provider commitments. Verify at thegreenwebfoundation.org
A+Repeat Visit Weight98% cachedPASS
Repeat Visit Weight
98% cached
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 222 KB (vs 12051 KB first visit). 215 of 231 resources are served from browser cache, saving 2.73g CO2 per repeat visit.
Info::
Repeat visit: 0.05g CO2 (first visit: 2.79g)
First visit
12051 KB
Repeat visit
222 KB
98% reduction on repeat visits
Saving 2.73g CO2 per returning visitor
215 resources served from cache · 16 resources re-downloaded
A+Transfer Efficiency95% efficientPASS
Transfer Efficiency
95% efficient
95% efficient
Info::
Transfer efficiency: 95%
Only 550 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 550 KB (5% of page weight)
Unused JS 550 KB
0.13g unnecessary CO2 per visit
Actual transfer 12051 KB
Theoretical minimum 11500 KB
Potential savings 550 KB (0.13g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization1 images, 8 KB total, 8 KB wastedINFO
Image Optimization
1 images, 8 KB total, 8 KB wasted
Image Optimization Audit
Total Images
1
Total Size
8 KB
Oversized
1
Wasted
8 KB
1 missing dimensions
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.