should we get our electricity by burning trees?should we get our electricity by burning trees? prof....

14
Should we get our electricity by burning trees? Prof. Bill Moomaw Tufts University Dr. Mary Booth Massachusetts Dr. Mary Booth Massachusetts Environmental Energy Alliance

Upload: others

Post on 31-Dec-2019

1 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Should we get our electricity by burning trees?Should we get our electricity by burning trees? Prof. Bill Moomaw Tufts University Dr. Mary Booth Massachusetts ... • As a result,

Should we get our electricity by burning  trees?

Prof. Bill Moomaw  Tufts University

Dr. Mary Booth MassachusettsDr. Mary Booth  Massachusetts Environmental Energy Alliance

Page 2: Should we get our electricity by burning trees?Should we get our electricity by burning trees? Prof. Bill Moomaw Tufts University Dr. Mary Booth Massachusetts ... • As a result,

Using wood for heat and power seems l k h d dlike such a good idea

• A lot of forest has regrown in New England inA lot of forest has regrown in New England in the past 100 years – wood is abundant

• Many of us heat with wood that we gatherMany of us heat with wood that we gather and cut locally so we are familiar with it

• The assumption of carbon neutralityThe assumption of carbon neutrality– Cutting and burning a tree releases the carbon dioxide that the tree absorbed while growing

– A new tree will grow and reabsorb the released carbon dioxide

Page 3: Should we get our electricity by burning trees?Should we get our electricity by burning trees? Prof. Bill Moomaw Tufts University Dr. Mary Booth Massachusetts ... • As a result,
Page 4: Should we get our electricity by burning trees?Should we get our electricity by burning trees? Prof. Bill Moomaw Tufts University Dr. Mary Booth Massachusetts ... • As a result,

State, national and international policy hsupports these propositions

• All states that have a renewable portfolioAll states that have a renewable portfolio standard treat burning  biomass to produce heat or electricity as carbon neutralheat or electricity as carbon neutral

• As a result, it is eligible for carbon credit payments from the federal governmentpayments from the federal government

• European governments also make this i llassumption as well

Page 5: Should we get our electricity by burning trees?Should we get our electricity by burning trees? Prof. Bill Moomaw Tufts University Dr. Mary Booth Massachusetts ... • As a result,

Additional benefits of biomassAdditional benefits of biomass

• It is a national resource that will reduce ourIt is a national resource that will reduce our dependence on foreign energy

• Biomass is lower in sulfur dioxide emissions• Biomass is lower in sulfur dioxide emissions (acid rain) and mercury

I ill l l j b• It will create local jobs

Page 6: Should we get our electricity by burning trees?Should we get our electricity by burning trees? Prof. Bill Moomaw Tufts University Dr. Mary Booth Massachusetts ... • As a result,

Unfortunately, there are some h d datmospheric downsides

• It is not carbon neutral, but emits moreIt is not carbon neutral, but emits more carbon dioxide than a coal burning powerplant

• The carbon is released in a minute, but can take a century to be reabsorbed by replacement trees

• Wood burning produces much higher serious air pollutants including asthma causing particulate matter and additional components h d lthan does coal 

Page 7: Should we get our electricity by burning trees?Should we get our electricity by burning trees? Prof. Bill Moomaw Tufts University Dr. Mary Booth Massachusetts ... • As a result,

The demand for biomass exceeds lsupply

• Biomass power plants exceed the supplyBiomass power plants exceed the supply several times over

• This problem will get worse as Europe imports• This problem will get worse as Europe imports wood from the US to “reduce” its own carbon emissions by co firing wood with coalemissions by co‐firing wood with coal

Page 8: Should we get our electricity by burning trees?Should we get our electricity by burning trees? Prof. Bill Moomaw Tufts University Dr. Mary Booth Massachusetts ... • As a result,

Biomass electricity will compete with h fother forest services

• Forests provide multiple services and benefits– Biodiversity– Water quality and quantity including flood control– Biodiversity and wildlifey– Carbon sequestration– Timber– Air qualityq y– Soils production and erosion control

• New England forests have been lost twice since European settlementsettlement

• One of the reasons that carbon dioxide is building up as slowly as it does is because of the regrowth of Eastern forestsforests

Page 9: Should we get our electricity by burning trees?Should we get our electricity by burning trees? Prof. Bill Moomaw Tufts University Dr. Mary Booth Massachusetts ... • As a result,

It is important to examine the science f b d d d llof carbon dioxide and pollution

• It is essential to do the carbon accountingIt is essential to do the carbon accounting correctly before we start handing out subsidies that might cause more harm thansubsidies that might cause more harm than good

• It is essential to get the pollution damage• It is essential to get the pollution  damage costs right 

Th li i h ld b d i b h f d• The policies should be driven by the facts and not the politics of any energy source

Page 10: Should we get our electricity by burning trees?Should we get our electricity by burning trees? Prof. Bill Moomaw Tufts University Dr. Mary Booth Massachusetts ... • As a result,

We each have a responsibility to use l lelectricity wisely

• Each of our demand for electricity services generates demand for more electric power generation

• Each of us can meet our electricity service needs with less electricityless electricity 

• We should all be aware of the damage that our current consumption of electricity causes

Sh ld ti t b l t d l t i it f– Should we continue to buy coal generated electricity from mountain top removal?

– Should we continue to spew one‐third of all carbon dioxide from our electricity consumption?from our electricity consumption?

– What sources can we use that lower damages to our health, the climate system and the environment?

Page 11: Should we get our electricity by burning trees?Should we get our electricity by burning trees? Prof. Bill Moomaw Tufts University Dr. Mary Booth Massachusetts ... • As a result,
Page 12: Should we get our electricity by burning trees?Should we get our electricity by burning trees? Prof. Bill Moomaw Tufts University Dr. Mary Booth Massachusetts ... • As a result,
Page 13: Should we get our electricity by burning trees?Should we get our electricity by burning trees? Prof. Bill Moomaw Tufts University Dr. Mary Booth Massachusetts ... • As a result,
Page 14: Should we get our electricity by burning trees?Should we get our electricity by burning trees? Prof. Bill Moomaw Tufts University Dr. Mary Booth Massachusetts ... • As a result,