Dagnija blumberga presentation

Rīgas Tehniskā universitāte
Enerģētikas un elektrotehnikas fakultāte
Vides aizsardzības un siltuma sistēmu institūts
www.videszinatne.lv

Renewables vs Fossil
Fuels
Dr. Dagnija Blumberga profesor,
Director of Institute of Energy Systems and
Environment
Dr. Andra Blumberga profesor,
Riga Technical University

2

Development of Energy Sector in Latvia

 Share of renewable energy resources in 2020
 EU 20%
 Latvia 40%

Is it possible for Latvia ro reach target?


3

RES target for Latvia (info: Ministry of Economy
December,2009)


4
Primary Energy use. Alternative Scenario
Kopējā PER piegāde

elektroenerģija
60000

bioetanols un biodīzeļdegviela
50000
citi resursi (salmi,kūdra)

naftas produkti un degakmens eļļa
40000

ogles (ietver koksu un nolietotās
riepas)
GWh

30000
dabasgāze

biogāze
20000
koksne

10000

0
2007 2010 2012 2014 2016 2018 2020


5

Development of Latvian energy sector. Alternative 1.

Investments in
 Natural gas power station
400 MW + 400 MW + ...
or
 Coal power station
400 MW
or
 Nuclear power station
???

6

Development of Latvian energy sector.Alternative 2

Investments in
 Energy efficiency improvements
 Development of renewable energy resources:
 Biomass cogeneration
120 MWe + 5 cities * 50 MWe
 Wind energy
1000 MWe offshore
500 MWe onshore
 Replacement of natural gas installations in DH
and decentralised systems


7

Some economical calculation


8

Some Economical Calculations for RES today
 Data from Latvenergo (published B&B 05/05/2010) about
green energy additional costs
Market price
21 (28) Ls/MWh
Higher tariff than market price of electricity
 70 Ls/MWh -21 (28) Ls/MWh = 49 (42) Ls/MWh
Paid green energy in 2009
 150 000 MWh/year
Total exceeded payment for green energy
 49 (42) Ls/MWh * 150 000 MWh/year = 7,35 (6,36)
million Ls/year


9

Some Economical Calculations. Alternative 1

 Costs for RTEC 2 -2 step (with no heat load for
DH system in Riga). No data available from
Latvenergo
 Investments costs 35 million Ls/year
July 2012 fuel costs 55 Ls/MWhe + 85 Ls/MWh
+ x/MWhe = 140 Ls/MWhe + 20 Ls/MWh
 Market price
21 (28) Ls/MWh
 Higher tariff than market price of electricity
160 - 21 (28) = 139 (132) Ls/MWh


10

Comparison of electricity purchase tariffs

 Large natural gas power stations has
uppermost support in Latvia ~ 160 Ls/MWh
 Larger natural gas power stations 400 MWe has
higher support than smaler cogeneration
 RES –E from biomass power station has less
support ~ 100 Ls/MWh than large natural gas
power station


11


 Import increases: Natural gas use costs
 RTEC 2 -1step 18 000 000 – 144 000 000 Ls/year
 RTEC 2 -2step 22 000 000 – 176 000 000 Ls/year
 Greenhouse gases increase
 RTEC 2 -1step 1,6 million – 12,8 milion t CO2/year
 RTEC 2 -2step 1,6 million – 12,8 milion t CO2/year

In 20 years Latvia will pay for import of natural gas
for 2 RTEC -2
6 - 8 bilion Ls

Ls / MWh

10
15
20
25
30
35
40
45
50
55
60
"Ludzas Bio-Enerģija"/"Ludzas
Apsaimiekotājs"
Talsi -"Bio - Enerģija"

Valka

"Madonas Siltums"

"Kuldīgas Siltumtīkli"

"Tukuma Siltums"

Alūksne - "Simone"

Ventspils

"Limbažu Siltums"

"Krāslavas Nami"

"Valmieras Siltums"

"Pļaviņu KP
Heat energy tariffs

"Komforts", Tukums

"Vangažu Namsaimnieks"

"Aizkraukles Siltums"

Ogres PA "Mālkalne"

Bauskas siltums

"Rīgas Siltums"

"Wesemann - Sigulda"

"Lielvārdes Remte"

"Jēkabpils Siltums"

Cēsis, SIA "CB"

"Daugavpils Siltumtīkli"

"Saldus Siltums"
Apstiprinātie Latvijas pilsētu siltumtarifi 2008./2009. apkures sezonā, bez PVN
Sarkans - koģenerācija, zaļš - šķelda, pārējie - pamatā dabasgāze vai cits kurināmais

Rēzekne

"Fortum Jelgava"

"Jūrmalas Siltums"

Olaine

"Salaspils Siltums"

"Liepājas Enerģija"
12

13


 Biomass use
 New jobs 100 000 jobs/year
 Local fuel 10 Ls/MWh (natural gas 35 Ls/MWh)
 Development of local technologies - taxes 10 – 100
million Ls
 Less tariffs for energy

 Wind energy use
 Solar Energy


14

What is going on with RES in Latvija

From system dynamic analysis it is easy to explain


15

delay delay2
DEPENDANCE

ALCOHOL short term long term
STRESS SPORTS
solution solution


16

delay delay2
DEPENDANCE

NATURAL GAS short term ENERGY long term RENEWABLE
solution CONSUMPTION solution ENERGY SOURCES


17

delay delay2
DEPENDANCE

NATURAL GAS short term ENERGY long term RENEWABLE
solution CONSUMPTION solution ENERGY SOURCES

misinformation


18

Enerģijas patēriņš

Dabas gāze

Atjaunojamie energoresursi

laiks

19

EU target possible is to reach if

 to change state energy policy
 to increase energy efficiency
 to increase share of
 biomass in electricity and heat energy production
 wind energy production

 to support only efficient renewable energy
resources (no support for fossil fuel)
 to start solar energy use
 To renew small scale hydropower stations


20

Changes in legislation

 Changes in state support for fossil electricity:
 No payment for installed capacity for fossil fuel power
stations
 To avoid low efficiency operation of power stations
including in tariffs
 Changes in regulation of tariffs: bussiness
approach
 Sustainable energy development - energy plans
of municipalities
 .....


21

Influence of RES Policy (info: Ministry of Economy
December,2009)


22

More information

 RTU Institute of Energy Systems and
Environment
 Kronvalda bulvaris 1
 LV-1010, Riga, Latvia
 Tel.: +371 – 67089 - 908
 Fax: +371 – 67089 - 908
 E-Mail: info@videszinatne.lv
 Web: www.videszinatne.lv


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