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rredc.nrel.gov: Solar Resource Data and Tools | Grid Modernization | NREL

The Renewable Resource Data Center Web (RReDC) site provides publications, data, and maps on biomass, geothermal, solar radiation, and wind resources in the United States.

Page load speed analysis

  • 88/100

    Good result
  • 6

    Successful tests
  • 2

    Failed tests
  • First response

    151 ms

  • Resources loaded

    346 ms

  • Page rendered

    132 ms

  • Total page load time

    629 ms

Click here to check amazing Rredc NREL content for United States. Otherwise, check out these important facts you probably never knew about rredc.nrel.gov

We analyzed Rredc.nrel.gov page load time and found that the first response time was 151 ms and then it took 478 ms to load all DOM resources and completely render a web page. This is an excellent result, as only 5% of websites can load faster.

Page optimization

  • HTML 1.6 kB
    Images 45.6 kB
    Javascripts 0 B
    CSS 1.3 kB

    In fact, the total size of Rredc.nrel.gov main page is 48.4 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 45.6 kB which makes up the majority of the site volume.

    • Original 1.6 kB
    • After minification 1.5 kB
    • After compression 677 B

    HTML optimization

    HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 873 B or 56% of the original size.

    • Original 45.6 kB
    • After optimization 45.5 kB

    Image optimization

    Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Rredc NREL images are well optimized though.

    • Original 1.3 kB
    • After minification 1.1 kB
    • After compression 287 B

    CSS optimization

    CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Rredc.nrel.gov needs all CSS files to be minified and compressed as it can save up to 968 B or 77% of the original size.

Network requests diagram

  • rredc.nrel.gov
  • style1.css
  • RReDC_logo_spicules_lines.jpg

Our browser made a total of 3 requests to load all elements on the main page. We found that all of those requests were addressed to Rredc.nrel.gov and no external sources were called. The less responsive or slowest element that took the longest time to load (189 ms) belongs to the original domain Rredc.nrel.gov.

Additional info on rredc.nrel.gov

Related solutions

Requests

The browser has sent 2 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rredc NREL. According to our analytics all requests are already optimized.

1

Images

1

CSS

2

All

Possible request optimization

1

Images

1

CSS

0

Optimized

2

All

Good result

IP address

This IP address is dedicated to Rredc.nrel.gov. This is the best domain hosting practice .

Normal result

IP Trace

rredc.nrel.gov

192.174.63.81

DNS records

Type Host Target/ip TTL Other
A

rredc.nrel.gov

192.174.63.81 3600
AAAA

rredc.nrel.gov

3600 Ipv6: 2620:d0:8000:7::81

Language and encoding

Normal result

Language

EN en language flag

Detected

N/A  language flag

Claimed

Encoding

UTF-8

Claimed

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rredc.nrel.gov can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Rredc.nrel.gov main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

HTTPS certificate

SSL Certificate

Rredc.nrel.gov has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.

Poor result

Visitor World Map

Country of origin for 38.9% of all visits is United States. It’s good for Rredc.nrel.gov that their server is also located in United States, as that enables the majority of their visitors to benefit from a much faster page load time.

Good result

Poor result

Social Sharing Optimization

Open Graph description is not detected on the main page of Rredc NREL. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks:

rredc.nrel.gov

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