Solar power in Vermont

This article needs to be updated. Please help update this article to reflect recent events or newly available information. (April 2018)

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Overview of solar power in the U.S. state of Vermont

Solar panels at Middlebury CollegeU.S. solar potential

Solar power in Vermont provides almost 11% of the state's in-state electricity production as of 2018.[1] A 2009 study indicated that distributed solar on rooftops can provide 18% of all electricity used in Vermont.[2] A 2012 estimate suggests that a typical 5 kW system costing $25,000 before credits and utility savings will pay for itself in 10 years, and generate a profit of $34,956 over the rest of its 25-year life.[3]

Net metering is available for up to at least 500 kW generation, but is capped at 15% of utilities peak demand. Excess generation is rolled over each month but is lost once each year. Group net metering is also allowed.[4] Vermont is given an A for net metering and a C for interconnection.[5] A feed-in tariff was created in 2009, but is limited to 50 MW and is fully subscribed. The cap increases by 5 to 10 MW/year starting in 2013 until it reaches 127.5 MW in 2022. It is available for solar, wind, methane, and biomass.[6][7] Seven solar projects are receiving payments, of $0.30/kWh, for 25 years.[8]

## Installed capacity[edit]

Grid-Connected PV Capacity (MW)[9][10][11][12][13][14][15][16][17][18]

Year  | Capacity  | Change  | % Change
2007 | 0.7 | 0.2 | 40%
2008 | 1.1 | 0.4 | 57%
2009 | 1.7 | 0.6 | 55%
2010 | 3.9 | 2.2 | 129%
2011 | 11.7 | 7.8 | 200%
2012 | 28.0 | 16.3 | 139%
2013 | 41.5 | 13.6 | 49%
2014 | 64 | 22.5 | 54%
2015 | 107 | 43 | 67%
2016 | 185 | 78 | 73%
2017 | 220 | 35 | 19%
2018 | 302 | 82 | 37%
2019 | 355 | 53 | 18%
2020 | 379 | 24 | 7%
2021 | 397.6 | 18.6 | %
2022 | 417 | 19.4 | %

## Solar farms[edit]

See also: List of power stations in Vermont § Solar

Source: NREL[19]

In 2012, Vermont had five solar arrays of at least 1 MW, the 2.2 MW SunGen Sharon 1 in Sharon.[20] the 2.1 MW concentrating photovoltaics array installed in July 2011 in South Burlington,[21][22] the 1.5 MW photovoltaic array also in South Burlington installed in October 2011,[23] the 1 MW photovoltaic array in Ferrisburgh,[24] and the 2 MW Williamstown Solar Project.[25]

As of 2019, Green Mountain Power (GMP) has further constructed several solar arrays as large as 5 MW.[26] In 2015, the 20 MW Coolidge solar farm near Ludlow was opposed by GMP, which claimed that there was no need for such utility-scale solar in the state.[27] The farm was completed by NextEra Energy at the end of 2018.[28]

## Generation[edit]

Using data available from the U.S. Energy Information Agency's Electric Power Annual 2017[29] and "Electric Power Monthly Data Browser",[30][31][32][33] the following table summarizes Vermonts’s solar energy posture.

2017 VT Solar Energy Generation Profile Solar-electric generation in Vermont  Year  | Facilities  | Summer capacity (MW)  | Electric energy (GWh or M kWh)  | Capacity factor | Yearly growth of generating capacity  | Yearly growth of produced energy  | % of VT renewable electric energy  | % of VT generated electric energy  | % of U.S. Solar electric energy

|
|
|
|
|
|
|
|
|

2018 | 34 | 98.7 | 143 | 0.165 | 33% | 44.4% | 6.09% | 6.07% | 0.27%
2017 | 31 | 74.2 | 99 | 0.152 | 13% | 67.8% | 4.64% | 4.62% | 0.19%
2016 |  | 65.7 | 59 | 0.103 | 118% | 23% | 3.10% | 3.08% | 0.16%
2015 |  | 32.4 | 48 | 0.169 | 7% | 100% | 2.4% | 2.42% | 0.19%
2014 |  | 30.2 | 24 | .091 |  | 41% | 2.10% | 0.34% | 0.13%

Capacity factor for each year was computed from the end-of-year summer capacity. 2017 data is from Electric Power Monthly and is subject to change.

2017 15KW Vermont Farm Solar Energy Generation Profile

A small-scale 15KW installation at a homestead in middle Vermont generated 19,480 kWh of electrical energy at a Capacity Factor of 0.15. The homestead was sending energy to the utility when it was produced and taking energy from the utility when needed. Overall, the homestead consumed 80% of its generation and sold the remaining 20% to the utility. The generation profile is shown in the chart.

Beginning with the 2014 data year, the Energy Information Administration (EIA) has estimated the distributed solar-photovoltaic generation and distributed solar-photovoltaic capacity.[34] These non-utility-scale appraisals evaluate that Vermont generated the following amounts of additional solar energy:

Estimated distributed solar electric generation in Vermont[35][36] Year  | Summer capacity (MW)  | Electric energy (GWh or M kWh)

|
|

2018  | 102.3 | 130
2017  | 90.3 | 111
2016  | 59.8 | 76
2015  | 49.9 | 48
2014  | 27.9 | 33

## See also[edit]

* Wind power in Vermont
* Solar power in the United States
* Renewable energy in the United States

## References[edit]

1. ^ "Solar Spotlight - Vermont" (PDF). www.seia.org. June 2019. Retrieved August 11, 2019.
2. ^ Witkin, Jim (October 30, 2009). "Report Argues for a Decentralized System of Renewable Power Generation". Green Blog.
3. ^ "Guide to Vermont Home Solar Incentives, Rebates, and Tax Credits". Solar Power Rocks.
4. ^ Vermont Net Metering Archived 2012-05-10 at the Wayback Machine
5. ^ Freeing the grid Archived 2012-06-16 at the Wayback Machine
6. ^ Standard Offer Program Archived 2012-07-27 at the Wayback Machine
7. ^ Standard Offer for Qualifying SPEED Resources Archived 2012-05-27 at the Wayback Machine
8. ^ Monthly Production Archived 2012-07-27 at the Wayback Machine
9. ^ Sherwood, Larry (August 2012). "U.S. Solar Market Trends 2011" (PDF). Interstate Renewable Energy Council (IREC). Archived from the original (PDF) on September 6, 2012. Retrieved August 16, 2012.
10. ^ Sherwood, Larry (June 2011). "U.S. Solar Market Trends 2010" (PDF). Interstate Renewable Energy Council (IREC). Retrieved June 29, 2011.
11. ^ Sherwood, Larry (July 2010). "U.S. Solar Market Trends 2009" (PDF). Interstate Renewable Energy Council (IREC). Archived from the original (PDF) on September 25, 2010. Retrieved July 28, 2010.
12. ^ Sherwood, Larry (July 2009). "U.S. Solar Market Trends 2008" (PDF). Interstate Renewable Energy Council (IREC). Archived from the original (PDF) on November 23, 2009. Retrieved July 24, 2010.
13. ^ Sherwood, Larry (August 2008). "U.S. Solar Market Trends 2007" (PDF). Interstate Renewable Energy Council (IREC). Archived from the original (PDF) on July 22, 2012. Retrieved July 24, 2010.[permanent dead link]
14. ^ US Solar Market Insight Report Archived 2012-04-18 at the Wayback Machine
15. ^ Sherwood, Larry (July 2009). "U.S. Solar Market Trends 2008" (PDF). Interstate Renewable Energy Council (IREC). p. 16\. Archived from the original (PDF) on November 23, 2009. Retrieved July 24, 2010.
16. ^ Sherwood, Larry (July 2012). "U.S. Solar Market Trends 2012" (PDF). Interstate Renewable Energy Council (IREC). p. 16. Retrieved October 11, 2013.
17. ^ Sherwood, Larry (July 2014). "U.S. Solar Market Trends 2013" (PDF). Interstate Renewable Energy Council (IREC). Retrieved September 26, 2014.
18. ^ "Vermont Solar" SEIA
19. ^ "PV Watts". NREL. Retrieved July 23, 2012.
20. ^ "Talmage Solar Engineering, Inc. Unveils Largest Smart Array in North America". Business Wire. July 31, 2012.
21. ^ Griset, Todd (July 28, 2011). "Vermont's largest solar array compared to California's". Energy Policy Update.
22. ^ "Site #316 Production Report | AllEarth Renewables Energy Production Report". www.allearthrenewables.com.
23. ^ "Military Invests in Solar at Vermont National Guard Base". Archived from the original on July 26, 2012.
24. ^ "Ferrisburgh Solar Farm". Archived from the original on March 27, 2012.
25. ^ "Williamstown solar array to be among state's biggest". Rutland Herald. July 31, 2012. Archived from the original on April 11, 2013.
26. ^ Bill Opalka (January 28, 2019). "Vermont solar storage projects aim to lower costs during peak demand". Vermont Journal.
27. ^ Polhamus, Mike (December 6, 2015). "20-megawatt solar project needed, developers' report says". VTDigger.
28. ^ Sharon Huntley (October 17, 2018). "Coolidge Solar Project on schedule and expected to go live in December". Vermont Journal.
29. ^ "Electric Power Annual State Data". 1990-2017 Existing Name Plate and Summer Capacity by Energy Source and State. Retrieved March 17, 2019.
30. ^ "Table 1.17B". Electric Power Monthly Data Browser. Retrieved March 15, 2019.
31. ^ "Report 1.14". Electric Power Monthly Data Browser. Retrieved June 17, 2017.
32. ^ "Report 1.13". Electric Power Monthly Data Browser. Retrieved March 17, 2019.
33. ^ "Report 1.6". Electric Power Monthly Data Browser. Retrieved March 17, 2019.
34. ^ "Electric Power Annual". Retrieved June 17, 2017.
35. ^ "Electric Power Monthly (February 2018 with data for December 2017) - Table 1.17.B. Net Generation from Solar Photovoltaic" (PDF). Electric Power Monthly. Retrieved May 29, 2018.
36. ^ "Electric Power Monthly (February 2018 with data for December 2017) - Table 6.2.B. Net Capacity from Solar Photovoltaic" (PDF). Electric Power Monthly. Retrieved July 27, 2018.

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