2024

1. California Proposition 4, Parks, Environment, Energy, and Water Bond Measure (2024)
2. Louisiana Outer Continental Shelf Revenues for Coastal Protection and Restoration Fund Amendment (2024)
3. Washington Initiative 2117, Repeal Carbon Cap and Invest Program Measure (2024)

2023

1. Maine Question 1, Voter Approval of Borrowing Above $1 Billion by State Entities and Electric Cooperatives Initiative (2023)

2020

1. Louisiana Amendment 2, Include Oil and Gas Value in Tax Assessment of Wells Amendment (2020)

2010

1. California Proposition 16, Require Supermajority Voter Approval to Expand Utility Services Initiative (June 2010)
2. Georgia Amendment 4, Energy Efficient Project Contracts Measure (2010)
3. Idaho Municipal Electric Bonds, HJR 7 (2010)
4. Washington Bonds for Energy Efficiency Projects, Referendum 52 (2010)

2005

1. California Proposition 80, Regulation of Electric Service Providers Initiative (2005)

2004

1. Colorado Amendment 37, Renewable Energy Sources for Utilities Initiative (2004)

1990

1. North Dakota Resources Trust Fund, Measure 2 (1990)

1988

1. Washington HJR 4223, Extension of Energy Conservation Amendment (1988)

1987

1. Maine Question 1, Yankee Nuclear Power Plant Waste Measure (1987)

1985

1. Maine Question 3, Bond Issue to Fund Centers for Advanced Technology Measure (1985)

1983

1. Louisiana Windfall Revenue Amendment (October 1983)

1980

1. California Proposition 7, Property Valuation with Solar Energy Systems Amendment (1980)
2. California Proposition 8, Bonds for Alternative Energy Sources Amendment (June 1980)
3. Maine Prohibit Nuclear Fission for Electricity Measure (September 1980)
4. Oregon Measure 3, Bonds for Local Energy Projects Amendment (May 1980)

1979

1. Washington SJR 120, Energy Conservation Financing Amendment (1979)

1978

1. California Proposition 3, Alternative Energy Systems Tax Exemption Amendment (June 1978)

1976

1. California Proposition 12, Loans for Energy Product Installations Amendment (1976)
2. California Proposition 3, Solar Heating and Cooling and Energy Insulation Bond Measure (1976)
3. Georgia Amendment 6, Solar Energy Tax Exemptions Measure (1976)
4. Ohio Bonds and Loans for Energy Facilities Amendment (June 1976)
5. Ohio Legislative Approval, Hearings, and Liability for Nuclear Power Plants Initiative (1976)

1974

1. Colorado Amendment No. 4, Municipal Partnership in the Development of Energy Resources Amendment (1974)

1972

1. California Proposition 9, Energy, Fuel, and Air Pollution Regulations Initiative (June 1972)

1964

1. Washington Initiative 215, Marine Recreation Land Act Measure (1964)

1962

1. North Dakota Power Generating Facilities Bonds, Initiative 1 (1962)

1958

1. Oregon Measure 10, State Power Development Amendment (1958)

1948

1. Oregon Measure Nos. 306-307, Licensing and Acquisition Provisions of the Hydroelectric Commission Referendum (1948)

1936

1. Oregon Measure Nos. 312-313, State Development and Distribution of Hydroelectric Power and Creation of Energy Commission Initiative (1936)
2. Oregon Measure Nos. 314-315, State Hydroelectricity Administrative Board Initiative (1936)
3. Washington HJR 10, Public Energy Production and Development Amendment (1936)

1934

1. California Proposition 18, Water and Energy Use, Acquisition, and Development Amendment (1934)
2. Washington Referendum 18, Municipal Energy Measure (1934)

1933

1. Oregon Measure Nos. 310-311, State Power Fund Bonds Measure (July 1933)

1932

1. Oregon Measure Nos. 324-325, State Administration of Hydroelectric Power Initiative (1932)

1930

1. Georgia Amendment 1, City of Elberton Electric System Bonds Measure (1930)
2. Georgia Amendment 6, City of West Point Flood Control Tax Exemptions Measure (1930)
3. Oregon Measure Nos. 324-325, Authorize Creation of Water and Power Utility Districts Initiative (1930)

1928

1. Idaho Limit Use of Natural Streams, HJR 13 (1928)

1926

1. California Proposition 18, Water and Energy Board Initiative (1926)
2. Oregon Measure Nos. 336-337, Creation of Water and Power Board Initiative (1926)

1924

1. California Proposition 16, Water and Electricity Board Initiative (1924)
2. Idaho Affirmation of Water Rights, SJR 7 (1924)
3. Washington Initiative 52, Municipal Authority Over Electrical Facilities Measure (1924)
4. Washington Referendum 3, Sale of Surplus Municipal Energy Measure (1924)

1922

1. California Proposition 19, Water and Energy Board Initiative (1922)

1910

1. Wisconsin Question 3, Water Power and Forest Funding Amendment (1910)

California

1. California Proposition 12, Loans for Energy Product Installations Amendment (1976)
2. California Proposition 16, Require Supermajority Voter Approval to Expand Utility Services Initiative (June 2010)
3. California Proposition 16, Water and Electricity Board Initiative (1924)
4. California Proposition 18, Water and Energy Board Initiative (1926)
5. California Proposition 18, Water and Energy Use, Acquisition, and Development Amendment (1934)
6. California Proposition 19, Water and Energy Board Initiative (1922)
7. California Proposition 3, Alternative Energy Systems Tax Exemption Amendment (June 1978)
8. California Proposition 3, Solar Heating and Cooling and Energy Insulation Bond Measure (1976)
9. California Proposition 4, Parks, Environment, Energy, and Water Bond Measure (2024)
10. California Proposition 7, Property Valuation with Solar Energy Systems Amendment (1980)
11. California Proposition 8, Bonds for Alternative Energy Sources Amendment (June 1980)
12. California Proposition 80, Regulation of Electric Service Providers Initiative (2005)
13. California Proposition 9, Energy, Fuel, and Air Pollution Regulations Initiative (June 1972)

Colorado

1. Colorado Amendment 37, Renewable Energy Sources for Utilities Initiative (2004)
2. Colorado Amendment No. 4, Municipal Partnership in the Development of Energy Resources Amendment (1974)

Georgia

1. Georgia Amendment 1, City of Elberton Electric System Bonds Measure (1930)
2. Georgia Amendment 4, Energy Efficient Project Contracts Measure (2010)
3. Georgia Amendment 6, City of West Point Flood Control Tax Exemptions Measure (1930)
4. Georgia Amendment 6, Solar Energy Tax Exemptions Measure (1976)

Idaho

1. Idaho Affirmation of Water Rights, SJR 7 (1924)
2. Idaho Limit Use of Natural Streams, HJR 13 (1928)
3. Idaho Municipal Electric Bonds, HJR 7 (2010)

Louisiana

1. Louisiana Amendment 2, Include Oil and Gas Value in Tax Assessment of Wells Amendment (2020)
2. Louisiana Outer Continental Shelf Revenues for Coastal Protection and Restoration Fund Amendment (2024)
3. Louisiana Windfall Revenue Amendment (October 1983)

Maine

1. Maine Prohibit Nuclear Fission for Electricity Measure (September 1980)
2. Maine Question 1, Voter Approval of Borrowing Above $1 Billion by State Entities and Electric Cooperatives Initiative (2023)
3. Maine Question 1, Yankee Nuclear Power Plant Waste Measure (1987)
4. Maine Question 3, Bond Issue to Fund Centers for Advanced Technology Measure (1985)

North Dakota

1. North Dakota Power Generating Facilities Bonds, Initiative 1 (1962)
2. North Dakota Resources Trust Fund, Measure 2 (1990)

Ohio

1. Ohio Bonds and Loans for Energy Facilities Amendment (June 1976)
2. Ohio Legislative Approval, Hearings, and Liability for Nuclear Power Plants Initiative (1976)

Oregon

1. Oregon Measure 10, State Power Development Amendment (1958)
2. Oregon Measure 3, Bonds for Local Energy Projects Amendment (May 1980)
3. Oregon Measure Nos. 306-307, Licensing and Acquisition Provisions of the Hydroelectric Commission Referendum (1948)
4. Oregon Measure Nos. 310-311, State Power Fund Bonds Measure (July 1933)
5. Oregon Measure Nos. 312-313, State Development and Distribution of Hydroelectric Power and Creation of Energy Commission Initiative (1936)
6. Oregon Measure Nos. 314-315, State Hydroelectricity Administrative Board Initiative (1936)
7. Oregon Measure Nos. 324-325, Authorize Creation of Water and Power Utility Districts Initiative (1930)
8. Oregon Measure Nos. 324-325, State Administration of Hydroelectric Power Initiative (1932)
9. Oregon Measure Nos. 336-337, Creation of Water and Power Board Initiative (1926)

Washington

1. Washington Bonds for Energy Efficiency Projects, Referendum 52 (2010)
2. Washington HJR 10, Public Energy Production and Development Amendment (1936)
3. Washington HJR 4223, Extension of Energy Conservation Amendment (1988)
4. Washington Initiative 2117, Repeal Carbon Cap and Invest Program Measure (2024)
5. Washington Initiative 215, Marine Recreation Land Act Measure (1964)
6. Washington Initiative 52, Municipal Authority Over Electrical Facilities Measure (1924)
7. Washington Referendum 18, Municipal Energy Measure (1934)
8. Washington Referendum 3, Sale of Surplus Municipal Energy Measure (1924)
9. Washington SJR 120, Energy Conservation Financing Amendment (1979)

Wisconsin

1. Wisconsin Question 3, Water Power and Forest Funding Amendment (1910)