microgrid minimises power consumption from
the public grid by storing excess energy from the
PV system when output is greater than demand,
and by releasing that stored power into the
microgrid during peak hours.
38
Taking into account annual sunshine hours at
Henan University, PV power generation from the
microgrid could supply about 880,000 kWh of
electricity per year, helping the university save
RMB 492,800 annually. If its service life is
20 years,
39 the cumulative power output will be 20
GWh, which means a saving of RMB 11.2 million
in the university’s energy spend. Calculations
based on the demonstration results show that the
project will generate 2.336 GWh of electricity per
year, amounting to 58.40 GWh in 25 years. This
means direct economic benefits of RMB 32.704
million. Compared to thermal power, the microgrid
could save about 21,030 tonnes of SCE and avoid
39,960 tonnes of CO 2 , 684 tonnes of SO 2 , 615
tonnes of NO x , 975 tonnes of dust and 19,565
tonnes of ash.
40
6.1.3 Outlook
The smart grid is an important enabler of the
energy revolution. Statistics from the International Energy Agency
41 show that energy conservation and energy efficiency improvements
enabled by the smart grid can reduce CO 2
Fig. 39 Monthly increase/reduction of SO x , NO x and PM2.5 with SMART Shift, SMART Shift Plus and SMART
Choice. Source AEP Ohio, Final Technical Report, 2014, pp. 118–119
38
Successful joint debugging of the first distributed PV
power generation and grid operation and control pilot
project in Henan, http://news.163.com/11/0214/09/
6SRI3GBM00014AED.html.
39
Successful joint debugging of the first distributed PV
power generation and grid operation and control pilot
project in Henan, http://news.163.com/11/0214/09/
6SRI3GBM00014AED.html.
40
Successful joint debugging of the first distributed PV
power generation and grid operation and control pilot
project in Henan, http://news.163.com/11/0214/09/
6SRI3GBM00014AED.html.
41
IEA, Technology Roadmaps: Smart Grids, 2011, p. 28.
Special Report 3: A Study of China’s Technology Revolution
335
the public grid by storing excess energy from the
PV system when output is greater than demand,
and by releasing that stored power into the
microgrid during peak hours.
38
Taking into account annual sunshine hours at
Henan University, PV power generation from the
microgrid could supply about 880,000 kWh of
electricity per year, helping the university save
RMB 492,800 annually. If its service life is
20 years,
39 the cumulative power output will be 20
GWh, which means a saving of RMB 11.2 million
in the university’s energy spend. Calculations
based on the demonstration results show that the
project will generate 2.336 GWh of electricity per
year, amounting to 58.40 GWh in 25 years. This
means direct economic benefits of RMB 32.704
million. Compared to thermal power, the microgrid
could save about 21,030 tonnes of SCE and avoid
39,960 tonnes of CO 2 , 684 tonnes of SO 2 , 615
tonnes of NO x , 975 tonnes of dust and 19,565
tonnes of ash.
40
6.1.3 Outlook
The smart grid is an important enabler of the
energy revolution. Statistics from the International Energy Agency
41 show that energy conservation and energy efficiency improvements
enabled by the smart grid can reduce CO 2
Fig. 39 Monthly increase/reduction of SO x , NO x and PM2.5 with SMART Shift, SMART Shift Plus and SMART
Choice. Source AEP Ohio, Final Technical Report, 2014, pp. 118–119
38
Successful joint debugging of the first distributed PV
power generation and grid operation and control pilot
project in Henan, http://news.163.com/11/0214/09/
6SRI3GBM00014AED.html.
39
Successful joint debugging of the first distributed PV
power generation and grid operation and control pilot
project in Henan, http://news.163.com/11/0214/09/
6SRI3GBM00014AED.html.
40
Successful joint debugging of the first distributed PV
power generation and grid operation and control pilot
project in Henan, http://news.163.com/11/0214/09/
6SRI3GBM00014AED.html.
41
IEA, Technology Roadmaps: Smart Grids, 2011, p. 28.
Special Report 3: A Study of China’s Technology Revolution
335