From: Wilson, Erika 

Sent: Friday, December 19, 2014 3:49 PM

To: M. V. Ramana

Cc: Bremer, Kristen; Hackel, Angela; Risley, David

Subject: RE: Website Comment: Carbon Pollution Standards

Hello

For the full EE calculations, please see the data file titled "GHG Abatement - Scenario 1" 

(http://www2.epa.gov/sites/production/files/2014-06/20140602tsd-ghg-abatement-measuresscenario1.xlsx) of the GHG Abatement Measures TSD (available here: http://www2.epa.gov/carbonpollution-standards/clean-power-plan-proposed-rule-technical-documents). Both the spreadsheet and 

TSD walk through the calculation. In your email, you noted that to get your numbers you multiplied the 

incremental savings (%) by the BAU sales demand. To replicate our calculation, you should multiply the 

incremental savings by the previous year's "sales after net EE." See p. 5-41 of GHG Abatement TSD for 

more information.

Thank you for your inquiry and your interest in the Clean Power Plan.

Erika Wilson

Clean Air Markets Division

Office of Atmospheric Programs

Office of Air and Radiation

U.S. EPA

202.343.9113

wilson.erika@epa.gov

________________________________________

From: Bremer, Kristen

Sent: Monday, October 27, 2014 9:36 AM

To: M. V. Ramana

Subject: RE: Website Comment: Carbon Pollution Standards

Yes - I received your email and passed it along to our technical team on Wednesday. Please know that 

we value all questions and comments and will do our best to respond in a timely manner; however, 

given current workloads and schedules it may take longer to receive a response.

______________________________

Kristen Bremer

Policy Analysis & Communications

U.S. EPA, Office of Air Quality Planning & Standards

Email: bremer.kristen@epa.gov

Phone: 919.541.9424

Cell: 919.321.7652
-----Original Message-----

From: M. V. Ramana [mailto:ramana@Princeton.EDU]

Sent: Saturday, October 25, 2014 8:38 AM

To: Bremer, Kristen

Subject: Fwd: Website Comment: Carbon Pollution Standards

Dear Kristen,

I was just checking if you did get this email of mine.

Thank you,

Ramana

Begin forwarded message:

From: "M.V. Ramana" <ramana@exchange.princeton.edu>

Subject: Re: Website Comment: Carbon Pollution Standards

Date: October 22, 2014 at 3:38:32 PM EDT

To: "Bremer, Kristen" <Bremer.Kristen@epa.gov>

Dear Kristen,

I was trying to reproduce the example case for energy efficiency in the technical support document on 

GHG abatement measures (Docket ID No. EPA-HQ-OAR-2013-0602). In the document, on page 5-45, in 

table 5-20, the results for South Carolina are listed as:

2017 2018 2019 2020 2021 2022 2023 2024 2025

82,451 83,359 84,278 85,206 86,145 87,094 88,054 89,024 90,005

0.34% 0.54% 0.74% 0.94% 1.14% 1.34% 1.50% 1.50% 1.50%

274 440 608 777 945 1,113 1,250 1,249 1,249

82,177 82,660 83,008 83,229 83,333 83,329 83,258 83,264 83,346

0 14 38 70 110 160 219 285 350

274 700 1,270 1,977 2,812 3,765 4,796 5,760 6,659

0.33% 0.84% 1.51% 2.32% 3.26% 4.32% 5.45% 6.47% 7.40%

However, if you carry out the operations that are mentioned in the TSD, the figures I get for the third 

and fourth rows are:

276 440 614 786 962 1142 1290 1302 1317

82,175 82,643 82,949 83,090 83,067 82,874 82,544 82,212 81,876

Some of the discrepancies are probably because of round-off but the latter discrepancies are too large 

to explain this way. Further, the last three columns have the same savings percentage, but because the 

BAU generation is increasing, the annual incremental savings should also be increasing. Instead, these 

numbers are decreasing slightly. I am attaching my spread sheet in which I did these calculations and 

derived the above figures.
I tried to look for the underlying calculations in the spreadsheets but I can't seem to find it. The numbers 

themselves are in the abatement measures scenario1.xlsx file in the Sorted by State tab (row 845 and 

846, colums J through R). But that doesn't calculate anything. Each cell points to a cell in 

Sorted_by_State, which then points to a table in the IntermediateData tab, which then leads me 

nowhere. So where are these figures actually calculated? I assume that somewhere in the spreadsheet 

90,005 must be multiplied by 1.50 % to derive the 1,249 figure. And so on. But it is not apparent where 

that is.

Please forward this question to the appropriate person.

Thank you very much,

Ramana

On Oct 22, 2014, at 10:49 AM, Bremer, Kristen <Bremer.Kristen@epa.gov> wrote:

You may contact me with any questions and I will forward them to the appropriate technical staff.

______________________________

Kristen Bremer

Policy Analysis & Communications

U.S. EPA, Office of Air Quality Planning & Standards

Email: bremer.kristen@epa.gov

Phone: 919.541.9424

Cell: 919.321.7652

----

M. V. Ramana

Nuclear Futures Laboratory & Program on Science and Global Security Woodrow Wilson School of Public 

and International Affairs Princeton University

221 Nassau Street, Floor 2

Princeton NJ 08542

Email: ramana@princeton.edu

Webpages: nuclearfutures.princeton.edu & www.princeton.edu/sgs