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Nationwide Utility Rates Now on Open EI

By Bill Scanion, NREL
September 7, 2011   |   5 Comments

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5 Reader Comments
Comment
1 of 5
September 8, 2011
I've used OpenEI to do research on rates and have even spent development dollars to take advantage of their API. After reviewing the data, of the 700 or so entries, only 5 made any sense - the data seemed either completely wrong or outdated.

This was in March of this year - has NREL made any improvements to their Open EI system or are they pretending like it is a new product to make more people go to the site and populate the data?
Comment
2 of 5
September 9, 2011
Exactly what 700 entries are you specifically referring to?
Comment
3 of 5
September 9, 2011
I went back and looked - at the time there were 318 entries - not sure where I remembered the 700 from. Going back to their site: http://en.openei.org/wiki/Gateway:Utilities#Browse_Utility_Rates, it appears they have 404 rates in their database. My question remains - how good is the data, because it wasn't good when we pulled it 5 months ago.

Do you have any experience with the data?
Comment
4 of 5
September 9, 2011
As good as the tariffs released by the utilities i would guess.
Comment
5 of 5
September 13, 2011
OpenEI was released about a year ago, and as far as I can tell, it's the nation's first free database of utility rates. Big projects like these take time – even Google doesn't get things 100% perfect when they release a new product. The rates in the database are useful -take a look at this study, which uses rates from the database: http://www.nrel.gov/docs/fy11osti/51694.pdf

Although the rates may not be 100% perfect at this point, I'd say the vast majority of them are accurate, at least to within 5%, and far better than anything you can get today for free (I think the closest thing would be EIA's listing of average rates by utility.)

The good news is that things will only get better from here. The US Department of Energy has recently awarded about $1 million to Illinois State University to populate the database with more rates, and ensure that those rates – and the rates currently in the database – are as accurate as possible. See this link for more info on the award: http://www1.eere.energy.gov/solar/pdfs/sunshot_awards_bycategory_2011_09_01.pdf

Also, don't forget: It's a crowd-sourcing tool, so if you see something out of place, you have the ability to fix it!
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