Solar power in Massachusetts has been increasing rapidly, due to Section 1603 grants for installations that began before December 31, 2011, [2] and the sale of SRECs for $0.30/kWh, [3] which allows payback for the system within 5 or 6 years, and generates income for the life of the system. For systems installed after December 31, 2011, and before December 31, 2016, the 30% tax grant becomes a 30% tax credit. There has been an appeal to the Congress to extend the 1603 program, the grant program, for an additional year. [4] [5]
Net metering is available with no aggregate limit for systems less than 10 kW, or three phase connected systems less than 25 kW. Larger systems are limited to 3% of total peak load. [6] Approximately 40 municipalities are exempt from net metering. Of these, most choose not to offer it.
The first solar park in the country is the 100 kW array installed in 1981 at Beverly High School. [7] The largest campus to have a solar program is Harvard's 555 kW array. [8] [9]
Massachusetts' largest privately owned solar array is the 7.1 MW Happy Hollow Community Solar and Storage Farm, completed in March 2019. [10] The town of Harvard, Massachusetts has the most solar installations with 75 planned, of which 21 have been installed. [11] Holyoke is home to two arrays which total 4.5 MW which were completed on December 20, 2011. [12] A 1.8 MW solar farm in Pittsfield was completed in 2010.[ citation needed ] A 5.75 MW solar park in Canton was completed in 2012. [13] [14] Two 6 MW solar parks are being built, one in Berkley, and the other in Carver. [15] As of August 2012, a total of 129 MW has been installed in the state. [16]
State officials had set a target of installing 250 MW of solar PV statewide by 2017 and in May 2013 upped the target to 1,600 MW by 2020 as the 250 MW goal had been met four years ahead of schedule. [17] Exceeding projections again, cumulative solar PV capacity in the state reached over 2 GW (2,000 MW) at the end of 2017. [18] The American Solar Energy Industries Association forecasts that another ~1.5 GW of solar PV will be installed in the state over the next four years (2018-2021). [19]
The U.S. Energy Information Administration meanwhile reports that solar power, including both utility-scale and small-scale projects, accounted for 7.7% of the electricity generated in Massachusetts in 2017 - the 5th highest percentage nationwide among the 50 states. [20] [21] [22]
Massachusetts has a robust program for solar on closed landfills, with more than 80 projects with over 250 MW of capacity. [23]
In July 2015, the administration of Massachusetts Governor Charlie Baker announced that Baker would file legislation to raise net metering caps on solar energy, with officials stating that "The administration looks forward to filing legislation that builds upon the success and continued growth of Massachusetts' solar industry while ensuring a long-term, sustainable solar program that facilitates industry growth, minimizes ratepayer impact and achieves our goal of 1,600 megawatts by 2020". [24] The administration submitted the legislation the following month, [25] and on April 11, 2016, Baker signed the legislation into law. [26] The cap increase prompted a subsequent overhaul the following year of the state's solar incentive program that cut the cost of solar installations to ratepayers in half. [27]
In December 2015, Baker's administration launched a $30 million residential solar loan program to increase direct ownership of solar electricity by lowering fixed interest rates to homeowners purchasing solar panels, with Baker himself stating "Massachusetts is a national leader in solar energy, and this program provides another way for residents to access solar energy while diversifying the Commonwealth's energy portfolio and reducing our overall carbon footprint". [28] In January 2018, when President Trump imposed tariffs on solar panels manufactured outside the United States, [29] Baker's administration criticized the decision, stating that it was "disappointed" but "remains committed to supporting solar energy as an important component of the Commonwealth's diverse energy portfolio and source of clean energy jobs." [30] In February 2018, Baker's administration announced that solar capacity in Massachusetts had increased to 2,000 megawatts. [31]
In late 2020, the Baker Administration released a Decarbonization Roadmap that aims for net zero greenhouse gas emissions by 2050. The plan calls for major investments in solar energy, along with offshore wind, which is considered complimentary. [32] [33]
The average insolation in Massachusetts is about 4 sun hours per day, and ranges from less than 2 in the winter to over 5 in the summer. [34]
Massachusetts electricity consumption in 2015 was 54,621 million kWh (54.6 TWh). The state is a net importer of electricity, having only generated 32,086 million kWh (32.0 TWh) that year. [36] Massachusetts has the potential for generating 799,344 million kWh/year (799.3 TWh/y) from 184,076 MW (0.184 TW) of offshore wind farms and 82,205 million kWh (82.2 TWh) from 51,568 MW (0.052 TW) of photovoltaic solar farms, and 26,000 million kWh (26 TWh) (47% of consumption) from 22,500 MW (0.023 TW) of rooftop photovoltaics.[ dubious ][ failed verification ] [37] [38]
In 2016, the net metering limits were reached in all utility areas, causing over 240 MW in over 550 projects to be delayed. [39] On April 11, 2016, Massachusetts Governor Charlie Baker signed a bill increasing caps on net metering for private projects from 4% of the utility's load to 7%. Government project caps are 1% higher. The value of net metering credits paid was reduced, with remuneration for large projects set closer to the wholesale electricity price, while smaller projects stay closer to the retail price. Utilities will be able to charge a minimum fee to pay for maintaining the grid. [40]
Massachusetts Grid-Connected PV Capacity (MW) [41] [42] [43] [44] [45] [46] | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Year | Capacity | Change | % Change | |||||||||
2003 | 0.15 | 0.03 | 25% | |||||||||
2004 | 0.21 | 0.06 | 40% | |||||||||
2005 | 0.28 | 0.07 | 33% | |||||||||
2006 | 2.18 | 1.90 | 679% | |||||||||
2007 | 3.83 | 1.67 | 76% | |||||||||
2008 | 7.36 | 3.53 | 92% | |||||||||
2009 | 16.95 | 9.59 | 130% | |||||||||
2010 | 40.07 | 23.12 | 136% | |||||||||
2011 | 74.6 | 36.4 | 86% | |||||||||
2012 | 207.3 | 123.2 | 165% | |||||||||
2013 | 445.0 | 237.7 | 115% | |||||||||
2014 | 734 | 289 | 65% | |||||||||
2015 | 1,020 | 286 | 39% | |||||||||
2016 | 1,360 | 340 | 33% | |||||||||
2017 | 1,699 | 304 | 22% | |||||||||
2018 | 2,465 | 766 | 45% | |||||||||
2019 | 2,767.68 | 302.68 | 12% | |||||||||
2020 | 3,046.7 | 279.02 | 10% | |||||||||
2021 | 3,607.4 | 560.7 | 18% | |||||||||
2022 | 4,158 | 550.6 | % |
Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2011 | 4 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
2012 | 30 | 0 | 0 | 1 | 2 | 3 | 4 | 4 | 4 | 4 | 3 | 3 | 2 |
2013 | 106 | 3 | 4 | 7 | 7 | 8 | 10 | 9 | 11 | 11 | 13 | 10 | 13 |
2014 | 307 | 9 | 10 | 16 | 21 | 28 | 34 | 34 | 36 | 37 | 34 | 28 | 20 |
2015 | 452 | 20 | 26 | 38 | 43 | 45 | 46 | 48 | 49 | 41 | 35 | 32 | 29 |
2016 | 609 | 23 | 47 | 41 | 47 | 58 | 58 | 66 | 65 | 62 | 55 | 48 | 39 |
2017 | 790 | 30 | 48 | 67 | 73 | 74 | 91 | 91 | 93 | 77 | 68 | 44 | 34 |
2018 | 977 | 46 | 51 | 82 | 92 | 116 | 114 | 134 | 110 | 69 | 67 | 40 | 56 |
2019 | 1,166 | 62 | 72 | 102 | 112 | 113 | 124 | 150 | 124 | 117 | 82 | 66 | 42 |
2020 | 1,406 | 63 | 83 | 127 | 122 | 171 | 164 | 161 | 152 | 133 | 97 | 70 | 63 |
2021 | 1,776 | 91 | 89 | 146 | 173 | 190 | 174 | 183 | 176 | 169 | 143 | 135 | 107 |
Solar power in Arizona has the potential to, according to then-Governor Janet Napolitano, make Arizona "the Persian Gulf of solar energy". In 2012, Arizona had 1,106 MW of photovoltaic (PV) solar power systems, and 6 MW of concentrated solar power (CSP), bringing the total to over 1,112 megawatts (MW) of solar power. As an example, the Solana Generating Station, a 280 MW parabolic trough solar plant, when commissioned in 2013, was the largest parabolic trough plant in the world and the first U.S. solar plant with molten salt thermal energy storage.
Solar power in Texas, a portion of total energy in Texas, includes utility-scale solar power plants as well as local distributed generation, mostly from rooftop photovoltaics. The western portion of the state especially has abundant open land areas, with some of the greatest solar and wind potential in the country. Development activities there are also encouraged by relatively simple permitting and significant available transmission capacity.
As of the first quarter of 2023, Washington State has 604 MW of solar power electricity generation. This is an increase from about 300 MW in 2021 and 27 MW in 2013.
Solar power in Kentucky has been growing in recent years due to new technological improvements and a variety of regulatory actions and financial incentives, particularly a 30% federal tax credit, available through 2016, for any size project. Kentucky could generate 10% of all of the electricity used in the United States from land cleared from coal mining in the state. Covering just one-fifth with photovoltaics would supply all of the state's electricity.
Solar power in Rhode Island has become economical due to new technological improvements and a variety of regulatory actions and financial incentives, particularly a 30% federal tax credit, available through 2016, for any size project. A typical residential installation could pay for itself in utility bill savings in 14 years, and generate a profit for the remainder of its 25 year life. Larger systems, from 10 kW to 5 MW, receive a feed-in tariff of up to 33.45¢/kWh.
Solar power in Indiana has been growing in recent years due to new technological improvements and a variety of regulatory actions and financial incentives, particularly a 30% federal tax credit for any size project.
Solar power in Iowa is limited but growing, with 137 megawatts (MW) installed by the end of 2019 and 27 MW installed during that year, ranking the state 40th among U.S. states. Iowa also generated 0.23% of the state's total electricity production in 2019 from solar energy; an amount sufficient to power over 17,000 Iowa homes. The state's early position as a major wind-power provider may have limited early large-scale solar investment.
Solar power in North Dakota has been a little-used resource. The state ranks last on installed solar power in the United States, with .47 MW of installed capacity. Solar on rooftops can provide 24.6% of all electricity used in North Dakota from 3,300 MW of solar panels. The most cost effective application for solar panels is for pumping water at remote wells where solar panels can be installed for $800 vs. running power lines for $15,000/mile.
Mississippi has substantial potential for solar power, though it remains an underutilized generation method. The rate of installations has increased in recent years, reaching 438 MW of installed capacity in early 2023, ranking 36th among the states. Rooftop photovoltaics could provide 31.2% of all electricity used in Mississippi from 11,700 MW if solar panels were installed on every available roof.
Solar power in Maine on rooftops, utilizing 6,300 megawatts (MW) of solar panels, can provide 60% of the electricity used in Maine according to a 2016 U.S. Department of Energy study. Maine and Vermont are tied for the second highest rooftop solar potential in the country, only behind the state of California. A 2020 estimate suggests that a typical 5.6 kilowatt (kW) residential system will pay for itself in 6-7 years and generate a profit of $45,000 over the rest of its 25-year life from the tax credits and utility savings.
Solar power in Oklahoma can provide 44.1% of all electricity used in Oklahoma from 19,300 MW of rooftop solar panels. This scenario is extremely unlikely though because the cost of electricity in Oklahoma is among the lowest in the nation.
Solar power in Arkansas on rooftops can provide 33.3% of all electricity used in Arkansas from 12,200 MW of solar panels.
Solar power in Alabama on rooftops could theoretically provide 29.8% of all electricity used in Alabama, with 20,400 MW of solar panels potentially installed on rooftops.
Solar power in Georgia on rooftops can provide 31% of all electricity used in Georgia.
Solar power in Minnesota expanded significantly in the early 2010s as a result of the cost decrease of photovoltaics and favorable policies. By 2016, it began to grow quickly.
Solar power in Maryland is supported by the state's legislation regarding the Renewable Portfolio Standard and Solar Renewable Energy Credit (SREC) program. The target for renewable energy as of 2017 is 20% by 2020, including 2% from solar power.
Solar power in Idaho comprised 550 MW in 2019. A 2016 report by the National Renewable Energy Laboratory estimated that rooftops alone have the potential to host 4,700 MW of solar panels, and thus provide 26.4% of all electricity used in Idaho. A large increase in the state's solar generating capacity began starting year 2015 when 461 MW of solar power was contracted to be built in Idaho.
Solar power in New Hampshire provides a small percentage of the state's electricity. State renewable requirements and declining prices have led to some installations. Photovoltaics on rooftops can provide 53.4% of all electricity used in New Hampshire, from 5,300 MW of solar panels, and 72% of the electricity used in Concord, New Hampshire. A 2016 estimate suggests that a typical 5 kW system costing $25,000 before credits and utility savings will pay for itself in 9 years, and generate a profit of $34,196 over the rest of its 25-year life. A loan or lease provides a net savings each year, including the first year. New Hampshire has a rebate program which pays $0.75/W for residential systems up to 5 kW, for up to 50% of the system cost, up to $3,750. However, New Hampshire's solar installation lagged behind nearby states such as Vermont and New York, which in 2013 had 10 times and 25 times more solar, respectively.
Solar power in Vermont provides almost 11% of the state's in-state electricity production as of 2018. A 2009 study indicated that distributed solar on rooftops can provide 18% of all electricity used in Vermont. 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.
Solar power in Wisconsin In 2026, Wisconsin rooftops can accommodate approximately 37 GWs of solar capacity and produce 44,183 GWh of electricity, nearly 70% of the statewide generation in 2019. Net metering is available for systems up to at least 20 kW, and excess generation is credited at retail rate to customers next bill. Some utilities allow net metering up to 100 kW. For Xcel customers, kilowatt credits are rolled over monthly and are reconciled annually at avoided cost. Best practices recommend no limits, either individually or aggregate, and perpetual roll over of kilowatt credits.
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