--Hello all,
It would be really helpful if prior to our next meeting on Thursday (6:00-8:00pm, Room 1117 in One Judiciary Square), the group could think about how to align all of our target goals. For example, the Institute for Local Self Reliance did a study (see attached) that said the District could offset a total 19% of energy consumption (2007 demand numbers) using rooftop solar (generation inside the city limits), and another 13% using CHP (we don’t have wind capacity and the study didn’t include tidal/river generation, waste-to-energy, biomass, etc.). But we have voted on these goals:
35% renewable by 2025
65% renewable by 2050
and
5% energy reductions by 2015
25% energy reductions by 2025
60% energy reductions by 2035
There is a green roof study of DC that stated that we have about 75 million square feet of potential green roof space in the District (assuming 80% of total area of roofs greater than 10,000 square feet). If we translated that into solar, it would add up to around 215-380 MW of capacity (depending on the panel efficiencies and other things). Now, 80% coverage is overly generous of course given that some plants can grow in shade and solar doesn’t. But, given that the green roof study was only for buildings greater than 10,000 square feet, which leaves out most single family homes in the District, perhaps the number is OK to use for now. 215-380MW would offset a small percentage of current total consumption. According to the ILSR study, the District would need 32.3% of its total land area in order to be totally self-reliant, which of course is not likely.
The SEU is charged with reducing energy consumption in the District by 1% per year, and our energy efficiency targets are more than twice that over time and nearly triple that by 2035. So we need to figure out how to augment what the SEU is doing to achieve our targets. This also does not factor in growth in energy demand due to new development and the increase in the number of residents in DC.
So thinking on how we get there would also be very useful as we further refine our goals and actions. Just some food for thought—see you all at our next meeting!
Bill Updike
Program Analyst
Government of the District of Columbia
Department of the Environment
1200 First Street, NE 5th Floor
Washington, DC 20002
(202) 535-1337 - Direct
Join Mayor Gray’s One City • One Hire - 10,000 Jobs Campaign
“Putting District Residents Back to Work – One Hire at a Time”
Learn more at http://onecityonehire.org
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Prof. Schwartzman -No one in the work-groups is denying that we are spewing CO2 irresponsibly and ought to be slapped into reality. The reality-check includes how technology is likely to evolve and how soon we can transform our profligate economy into one that is truly sustainable. (I might also point out that sustainable may not mean carbon-zero, but reducing per capita emissions by 80%, a number compatible with the IPCC 450 ppm target.)
That said, we definitely should include big improvements in solar panel efficiency in our projections. Affordable rooftop solar panels a decade from now will likely have 50% higher efficiency than we have today. By 2050, who knows. For the near-term the super high-efficiency multi-junction cells are likely to be restricted to large solar installations with sun-tracking and cooling, not very likely on residences, but possible in some DC solar-fields.
On another front, one of our present awkward issues is the advent of cheap natural gas, which may be encouraging the transition from coal for electricity generation, but is discouraging the next step to carbon-free sources for electricity, transport, and heating. This suggests a great university project: converting the abundant natural gas into hydrogen and storing the carbon. A hydrogen energy economy is clearly a great final goal.
- Gene
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Other information sources for renewable energy include:
Rocky Mountain Institute: http://www.rmi.org/Knowledge-Center/ReinventingFire
RAND Corporation: http://www.ens-newswire.com/ens/nov2006/2006-11-13-05.asp
Scientific American: http://www.scientificamerican.com/article.cfm?id=a-path-to-sustainable-energy-by-2030
The U.S. military plans to generate 50% renewable energy by 2025.
Germany has blown past its aggressive renewable energy goals of 2020. The overall Eurozone goal was 20% renewables by 2020, a goal Germany reached for itself in 2011.
Steve Seuser
On Feb 23, 2012, at 2:13 PM, Brett Wiley wrote:
> Hi All,
>
> For energy efficiency, our goals are aggressive and I feel like they
> fall in line with the American Council for an Energy Efficiency
> Economy's report "The Long-Term Energy Efficiency Potential: What the
> Evidence Suggests". They cite a 40-60% reduction in total energy
> consumption by 2050 based on today's level using only existing
> technology. Pragmatic and progressive seems entirely possible using
> existing knowledge of the energy efficiency market and potential in
> DC.
>
> http://www.aceee.org/research-report/e121
>
> I'm looking forward to the meeting tonight.
>
> in community,
> Brett Wiley | Lead Organizer, Strong Homes Program
>
> Groundswell | 1850 M Street NW Suite 1150 Washington, D.C. 20036 l
> www.groundswell.org | 202.630.5586 | Twitter: @grndswell
>
> *The DC Project changed its name to Groundswell. To find new resources
> and discover opportunities to take action, visit our new
> site:www.groundswell.org.
>
> On Feb 21, 4:50 pm, "Updike, William (DDOE)" <william.upd...@dc.gov>
> wrote:
>> Hello all,
>>
>> It would be really helpful if prior to our next meeting on Thursday (6:00-8:00pm, Room 1117 in One Judiciary Square), the group could think about how to align all of our target goals. For example, the Institute for Local Self Reliance did a study (see attached) that said the District could offset a total 19% of energy consumption (2007 demand numbers) using rooftop solar (generation inside the city limits), and another 13% using CHP (we don't have wind capacity and the study didn't include tidal/river generation, waste-to-energy, biomass, etc.). But we have voted on these goals:
>>
>> 35% renewable by 2025
>> 65% renewable by 2050
>> and
>> 5% energy reductions by 2015
>> 25% energy reductions by 2025
>> 60% energy reductions by 2035
>>
>> There is a green roof study of DC that stated that we have about 75 million square feet of potential green roof space in the District (assuming 80% of total area of roofs greater than 10,000 square feet). If we translated that into solar, it would add up to around 215-380 MW of capacity (depending on the panel efficiencies and other things). Now, 80% coverage is overly generous of course given that some plants can grow in shade and solar doesn't. But, given that the green roof study was only for buildings greater than 10,000 square feet, which leaves out most single family homes in the District, perhaps the number is OK to use for now. 215-380MW would offset a small percentage of current total consumption. According to the ILSR study, the District would need 32.3% of its total land area in order to be totally self-reliant, which of course is not likely.
>>
>> The SEU is charged with reducing energy consumption in the District by 1% per year, and our energy efficiency targets are more than twice that over time and nearly triple that by 2035. So we need to figure out how to augment what the SEU is doing to achieve our targets. This also does not factor in growth in energy demand due to new development and the increase in the number of residents in DC.
>>
>> So thinking on how we get there would also be very useful as we further refine our goals and actions. Just some food for thought-see you all at our next meeting!
>>
>> Bill Updike
>> Program Analyst
>> Government of the District of Columbia
>> Department of the Environment
>> 1200 First Street, NE 5th Floor
>> Washington, DC 20002
>> (202) 535-1337 - Direct
>> green.dc.gov
>>
>> [cid:image002....@01CCF0B8.F90D5130]
>>
>> Join Mayor Gray's One City * One Hire - 10,000 Jobs Campaign
>> "Putting District Residents Back to Work - One Hire at a Time"
>> Learn more athttp://onecityonehire.org
>>
>> image002.jpg
>> 5KViewDownload
>>
>> Institute for Local Self-Reliance Renewables Study.pdf
>> 3864KViewDownload
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Judy -A carbon tax would be great, if only to see how Congress would react.One qualm I've heard is the equity issue. Typically there is refund of some of the tax for low income homeowners. If this refund is 100% then there is no motivation for energy efficiency. Any refund less than 100% reduces the funds available for energy efficiency Thus any carbon tax needs to tie these taxpayers to public funds for EE - presumably from the carbon tax revenues.Has anyone in the transportation subgroup proposed a sliding scale for automobile registrations, depending on EPA MPG or equivalent?- Gene(62 MPG over the last 11 yrs - when I'm not riding Metro)
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