Solar Thermal Electric

Renewable Portfolio Standard

Note: Public Act 102-0662, the Climate and Equitable Jobs Act (CEJA), enacted in September 2021, increased the RPS to require 50% renewable energy by 2040. This law also says that it is the policy of the state to rapidly transition to 100% clean energy by 2050.

Under CEJA, the 25% target by 2025 remains in place, and will increase by at least 3% each year from 2025 to 2030 until reaching 40% in 2030. Thereafter, the Illinois Power Agency will determine the specific increase each year, attempting to procure 50% by delivery year 2040, taking into account energy demand, other

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Clean Energy Procurement

DGS purchases electricity in de-regulated power markets on behalf of all state agencies. Through an innovative electricity purchasing strategy for larger accounts, DGS hedges for a portion of the future power requirements of state facilities. By locking in rates for a portion of future power needs and purchasing the balance at real-time rates, favorable trends in power prices are exploited to the State's benefit. This strategy is referred to as “Block and Index.” Through these reverse auctions the state avoided costs of $4.7M in fiscal year 2019. The state's renewable portfolio standard requires that at least 30.8% of electricity procured

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Renewables Portfolio Standard

NOTE: A.B. 3723 enacted in May 2018 included several updates to the state's Renewable Energy Portfolio standard including i) increasing the RPS standard to 50% by 2030, ii) increasing the offshore wind carveout, iii) increases in the Solar carveout, iv) changes to the alternative compliance payments, and other several minor changes. 

Requirements:

New Jersey's Renewable Portfolio Standard (RPS) was first adopted in 1999 and has been updated several times. In May 2018, A.B. 3723 increased the total RPS requirement in New Jersey to 35% by 2025 and 50% by 2030 where the specified percentage of electricity sold in the the state

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Property Tax Exclusion for Solar Energy Systems and Solar Plus Storage System

Section 73 of the California Revenue and Taxation Code allows a property tax exclusion for certain types of solar energy systems installed between January 1, 1999, and December 31, 2024. This section was amended by AB 1451 in September 2008 to include the construction of an active solar energy system incorporated by an owner-builder in the initial construction of a new building that the owner-builder does not intend to occupy or use. This only applies if the owner-builder did not already receive an exclusion for the same active solar energy system and only if the initial purchaser purchased the new

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Net Metering

Wyoming enacted legislation in February 2001 that established statewide net metering. The law applies to investor-owned utilities, electric cooperatives and irrigation districts. Eligible technologies include solar, wind, biomass and hydropower systems up to 25 kilowatts (kW) in capacity. Systems must be intended primarily to offset part or all of the customer-generator's requirements for electricity.

Net excess generation (NEG) is treated as a kilowatt-hour (kWh) credit or other compensation on the customer's following bill.* At the beginning of the calendar year, a utility will purchase any unused credits at the utility's avoided-cost rate. Utilities may not charge net-metered customers any additional

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Net Metering

Note: S.B. 295 was signed in March 2023, and changes were approved by the Public Service Commission in late September 2023 via Order No. 7 in Docket No. 23-021-R.

In April 2001, Arkansas enacted legislation (H.B. 2325) directing the Arkansas Public Service Commission (PSC) to establish net-metering rules for certain renewable-energy systems.* The PSC approved final rules for net metering in July 2002. Net metering rules and related state statutes have been amended several times afterward, including through H.B. 2334 (April 2007; expanding net metering availability), H.B. 1004 (March 2015; revised rule provisions related to excess generation, increasing

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Renewable Energy Tax Credit

Note: This credit expired on December 31, 2014, and is not allowed for devices installed on or after January 1, 2015. However, wind energy systems whose construction began prior to January 1, 2015 and were completed by January 1, 2017 are eligible for this credit.

North Dakota offers a corporate income tax credit for the cost of acquiring and installing a geothermal, solar, biomass, or wind energy system in a building or on a property owned or leased by a North Dakota taxpayer. For systems installed after December 31, 2000, and before January 1, 2015, the credit is equal to

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Corporate Property Tax Reduction for New/Expanded Generating Facilities

Montana generating plants producing one megawatt (MW) or more with an alternative renewable energy source* are eligible for the new or expanded industry property tax reduction. This incentive reduces the local mill levy during the first nine years of operation, subject to approval by the local government. If approved, the facility is taxed at 25% or 50% of its taxable value in the first five years following the issuance of the construction permit. Each year thereafter, the tax reduction decreases and the taxable value percentage is increased in equal increments until the full taxable value is attained in the tenth

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Renewable Energy Resources Trust Fund

According to § 20 ILCS 687/6-4, the statute this trust is under will be repealed on December 31, 2021. 

Illinois's 1997 electric-industry restructuring legislation created separate public benefits funds that support renewable energy and residential energy efficiency. The Renewable Energy Resources Trust Fund (RERTF) supports renewables through grants, loans and other incentives administered by the Illinois Department of Commerce and Economic Opportunity (DCEO). The funding mechanism was established for 10 years in January 1998. In August 2007, funding was extended through December 12, 2015.

Renewable-energy projects eligible for RERTF support include wind energy, solar-thermal energy, photovoltaics, dedicated crops

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Renewable Portfolio Standard

Note: Legislation (S.B. 2967) signed in November 2024 adds fusion energy to the state's RPS and sets Class II Waste Energy Minimum Standard to 3.7% in 2026 and all years thereafter.

Massachusetts' 1997 electric-utility restructuring legislation created the framework for a renewable portfolio standard (RPS). In April 2002, the Massachusetts Department of Energy Resources (DOER) adopted RPS regulations. The RPS was significantly expanded by legislation enacted in July 2008 (Green Communities Act, S.B. 2768), which established two separate renewable standards -- a standard for “Class I” renewables, and a standard for “Class II” renewables -- as

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