History of District Heating in the United States

| Chronological List of District Heating Systems in the United States |

San Francisco, California



1915 Steam System Map 2006 Steam System Map

Nathan Walter Spaulding, Peter Tracy Dickinson and David Mckay received a franchise to distribute steam, hot water, or other fluids for a period of twenty-five years in December 1886.  Dickinson, Spaulding,
James A Waymire, Abner Doble and Charles Montgomery incorporated the San Francisco Steam Company in December 1887.

The company evaluated several options, including buying and distributing exhaust steam from the numerous steam engines in the district bounded by Drumm, Kearny, Commercial and Folsom streets.  The company contracted with the American District Steam Company to build a system in 1893 and a mortgage for $500,000 was secured from the California Safe Deposit and Trust Company.  The proposed system then disappears, likely due to in ability to sell the bonds during the Panic of 1893, which hit the west coast very hard.

The Consumers' Light and Power Co., Equitable Light and Power Co. and Southside Light and Power Co. were "basement" electric companies that began selling exhaust steam in 1910.  They were bought that year by the United Light and Power Company of California, which also controlled the exclusive use of the American District Steam Heating Co.'s complete steam-heating and distributing system operating in the center business district of San Francisco, which is utilizing and distributing exhaust steam of the generating plants to the extent of about 4,000 h. p.

The City Electric Company also began supplying exhaust steam around 1910 as a subsidiary of the Great Western Power Company, which acquired the three other companies in 1915.

The San Francisco Gas and Electric Company began selling exhaust steam in 1911, the same year it was acquired by the Pacific Gas and Electric Company.  

The Great Western Power Company and Pacific Gas and Electric Company (PG&E) merged in a stock transfer in 1930.  PG&E sold the steam system to San Francisco Thermal, L.P. in 1993, which was later acquired by NRG Thermal, a subsidiary of NRG Energy.  NRG Energy spun off NRG Thermal and other assets to Clearway in 2013.  Clearway changed their name to Cordia in 2022.

The system is currently owned and operated by Cordia


References
1886 "For Distributing Steam," The San Francisco Examiner, May 14, 1886, Page 3.
A petition was filed with the Board of Supervisors yesterday by P. T. Dickinson, David McKay and N. W. Spaulding, asking to be allowed to maintain and operate a system of pipes throughout the city tor tho conveyance of steam, hot water or other fluids for heating buildings, domestic uses and running engines: and also to maintain in convenient localities batteries for steam boilers..

1886 "The Supervisors," Daily Evening Bulletin, May 19, 1886, Page 1.
A petition was received from P.T. Dickinson, David McKay and N.W. Spaulding, asking for the privilege of laying down and operating for fifty years through the streets, avenue and parks of the city, a system of pipes and conduits for the conveyance of steam or hot water for heating buildings and domestic purposes, for running engines, and machinery and for all purposes for which power and heat are required and to maintain steam boilers therewith.

1886 "Street Committee," The San Francisco Examiner, May 21, 1886, Page 4.
P. T. Dickinson explained to the committee his system of heating houses by the Holly system, the right to lay down pipes for which through the public streets had been asked for. He said that a house of ten rooms could be heated at no greater expense than keeping up two coal fires. As the matter was of such great importance, the committee concluded to submit it to the Board at its next meeting.

1886 "A Steam Company," Daily Evening Bulletin, May 27, 1886, Page 1.
The Supervisors Asked for a Franchise of Lay an Underground Steam System

1886 "The Supervisors," Daily Evening Bulletin, June 7, 1886, Page 2.
Discussion of reasons to delay approval of steam franchise

1886 "City Affairs," The San Francisco Examiner, June 8, 1886, Page 3.
The Board of Supervisors met yesterday morning as a committee of the whole to consider the application of P. T. Dickinson, N. W. Spaulding and others for a franchise to lay down an underground system of steam pipes for heating and cooking purposes. A motion to report a proposed order for passage was lost and after considerable debate the matter was postponed until June 21st

1886 "Street Committee," The San Francisco Examiner, November 12, 1886, Page 3.
The petition of Mr. Dickinson to lay pipes and conduits through the streets for the purpose of conveying steam to be used in motive and heating purposes, was presented. The committee reported in favor of the petition, reserving the right to have the city do the paving over the pipes at the expense of the company.

1886 "Street Committee," Daily Alta California, November 12, 1886, Page 7.
Franchises for Electric Lights and Steam Pipes Recommended. The Street Committee of the Supervisors met yesterday afternoon. The following petitions were read and reported upon favorably : Of property-owners on Twenty-ninth street for the reduction in width of sidewalks from 15 to 12 feet. Of P. T. Dickinson, David McKay and N. W. Spaulding for the right to lay down, maintain and operate for 25 years, in the streets of this city, pipes end conduits , for the purpose of carrying steam and hot water for heating buildings, and distributing heat and power, also of maintaining steam boilers in central portions of the city.

1886 "The Supervisors," The San Francisco Examiner, November 16, 1886, Page 3.
An order was passed to print granting P. T. Dickinson, David McKay and N. W. Spaulding the right to lay down and operate a system of pipes or conduits for the conveyance of steam, hot water or other fluids, but not gas and electricity, for all purposes of heating and power.

1886 "The Supervisors," The San Francisco Examiner, December 7, 1886, Page 2.
Subterranean-pipe Veto.  A communication was received from Mayor Bartlett vetoing the order passed granting a franchise to P. T. Dickinson, David McKay and N. W. Spauldlug to construct and lay underground pipes and conduit in the public streets for the conveyance ot steam for heating and power purposes The Mayor doubted ff the Consolidation Act would permit of the granting of the franchise and also objected to the absence of stipulations dedicating the pipe to public use, fixing uniform rates of charges and their regulation by the municipal government. The veto was ordered printed.

1886 "The Supervisors," The San Francisco Chronicle, December 14, 1886, Page 2.
The Mayor's veto of the franchise granting to P. T. Dickinson, David McKay and N. W. Spalding the right to lay down a system of conduits through the streets for the transmission ot steam and to erect the necessary engines and boilers was taken up and passed over the veto by a vote of ten ayes to two noes, supervisors Pond and Heyer alone voting to sustain the veto.

1887 "New Incorporations," Daily Evening Bulletin, December 22, 1887, Page 3.
San Francisco Steam Company capital stock $5,000,000 divided into 50,000 shares. P.T. Dickinson, N.W. Spaulding, James A Waymire, Abner Doble and Charles Montgomery
 
1889 "The Uses of Steam,"  Daily Evening Bulletin Monday, April 1, 1889, Page 1.

1889 "Steam Distribution," Daily Evening Bulletin, December 5, 1889, Page 2
Details of a System Practiced East for Supplying Steam Like Gas or Water.

1891 "District Steam Systems," by Charles E. Emery, Transactions of the American Society of Civil Engineers 24:188-222 (March 1891)
Page 205:  It would be entirely practicable in some cities to carry out a plan proposed for San Francisco, to wit, to use high steam pressure in the manufacturing and office neighborhoods, discharge the exhaust steam into other steam mains, and conduct the same to dwelling neighborhoods in the vicinity, for heating purposes, from which the return water would either be discharged into the sewers at a low temperature under proper supervision, or if water was high priced, be returned to the station.

1891 "A Big Enterprise," San Francisco Chronicle, December 22 1891, Page 12
Mains to be laid for steam-power purposes.  About $400,000 to be expended within the next eight months.Steam district bounded by Drumm, Kearny, Commercial and Folsom streets.  The company consists of James A. Waymire, N.W. Spaulding, Abner Doble, John H. Dickinson, and several others.

1891 "Universal Steam," The San Francisco Examiner, December 23, 1891, Page 3.
The Extensive Plans of a Power and Heating Company

1893 "Big Trust Deed," San Francisco Chronicle, October 11, 1893, Page 7.
The San Francisco Steam Company has executed to the California Safe Deposit and Trust Company a trust deed to secure the payment of 500 bonds of $1000 each.  The deed covers a franchise granted by the Supervisors in February, 1888, to P. T. Dickinson, David McKay and N.W. Spaulding, certain letters patent and other property of uncertain character. The bonds secured by the deed of trust are to run for nineteen years and bear interest at 6 per cent.

1893 "Will Begin on Bonds," The San Francisco Examiner, October 11, 1893, Page 6.

1893 "Annual Meeting," The Morning Call, December 15, 1893, Page 5.
The Regular Annual meeting of the stockholders of the San Francisco Steam Company will be held on Saturday, the 16th day of December 1893..

1893 "Pipes for Conveying Steam," The Morning Call, December 23, 1891, Page 3.
The American District Steam Company of Lockport, N.Y., through the San Francisco Steam Company, will soon begin the erection of a boiler-house and laying mains in the district bounded by Drumm, Kearny, Commercial and Folsom streets, for the transmission of steam for power and heating purposes.  Six miles of pipe will be laid.
This is the last mention of the steam company in local newspapers.

1908 April 18 San Francisco Earthquake and Fire

1908 "Hunt, Mirk & Co., Inc. Engineers," The Journal of Electricity, Power and Gas 20(22):348 (May 30, 1908)
The Consumer's Light & Power Company have just closed a contract with this company for a complete plat to be located in the Whitney Building on Geary Street.  The plan will consist of three 300-kilowatt generators direct connected to American-Ball angle compound engines, one 125-kilowatt generator direct connected to an American-Ball duplex compound engine, together with water-tube boilers and auxiliary apparatus necessary for a complete station.  The Consumer's Light & Power Company will also go quite extensively into the district steam heating business, which is a new departure in San Francisco.

1910 "Tevis in Plan for Merger of Power Plants," The San Francisco Call and Post, May 23, 1910, Page 1.

1910 "City Franchise Needed for Steam Heat Pipes," The San Francisco Call and Post, November 26, 1910, Page 5.
The board of works was asked yesterday to. stop the Equitable light arid power company putting in the streets any more pipes for conveying steam heat to patrons until it secures a court judgment confirming its rights to open streets for the purpose. The supervisors' street committee in making the request held that under the city attorney's ruling the company would have to get a franchise.  This the company's representatives denied, holding the hot water and steam were ''delivered" to the patrons as the pipes entered the houses. The supervisors took the ground that only the heat was delivered and that that was not a commodity provided for in the state law.

1910 "Equitable Concern Seeks Injunction," The San Francisco Chronicle, November 19, 1910, Page 12.

1910 "Battle Begins on Equitable's Street Work," The San Francisco Examiner, November 29, 1910, Page 10.
Light and Power Co. gets a temporary order restraining interference.  Steam heat pipes

1910 "Deny Steam Heat Permit to the Second Applicant," The San Francisco Chronicle, December 4, 1910, Page 53.
Deasey says Southside Light and Power Company is the Equitable under a Disguise.

1911 "New Units for Great Combine," The San Francisco Call, January 1, 1911, Page 36.
Basement electric companies

1911 "Steam Supply to be Object of Competition," San Francisco Call, March 11, 1911, Page.
San Francisco Gas and Electric will lay pipe.

1911 "Personals," The Journal of Electricity, Power and Gas 26(12):284 (March 25, 1911)
F.H. Varney, engineer of operation and maintenance of the Pacific Gas & Electric Company's steam engineering department, returned to San Francisco last Tuesday after making an extensive Eastern tour.  He visited the principal electrical power plants and factories in the East with a vew to the installation of the new steam turbine and a steam heating system at San Francisco.

1911 Chapter 445.  An act authorizing any city and county or municipality within this state, power to grant franchises, to lay steam heating pipes in the streets, roads, avenues, alleys and public highways, for the purpose of carrying steam to be used for heating purposes.  Approved April 12, 1911.
The people of the State of California, represented in senate and assembly, do enact as follows:
SECTION 1. Power is hereby given to all cities and counties and municipalities within this state to grant franchises for the purpose of laying pipes in the streets, roads, avenues, alleys and public highways therein, for the purpose of carrying steam heat under high pressure; to be used, distributed and sold to the inhabitants thereof, for heating purposes.
The granting of such franchises shall be subject to the provisions of the act entitled "An act providing for the sale of street railroad and other franchises in counties and municipalities, and providing conditions for the granting of such franchises by legislative or other governing bodies, and repealing conflicting acts," and any act or acts amendatory thereof.

1911 Pacific Gas and Electric Magazine 3(4):143 (September 1911)
The general offices in 445 Sutter Street have now been connected in with the steam heating system being operated by the San Francisco Gas and Electric Company, which generating plants in the basement of the Emporium on Market Street and the Bohemian Club, Pine and Taylor Streets.  This will do away with the old oil burning steam heating plant in the basement of 445 Sutter Street.

1912 "Hot Fight is on for Steam Heat Business," The San Francisco Call and Post, January 26, 1912, Page 1.
Three big companies want to supply hotels and downtown apartments.  Great Western now a rival of Equitable and Pacific Corporations.

1912 "Fuel Oil," by F.H. Varney, Minutes of Meeting of the Association of Edison Illuminating Companies 28:342-357 (September 1912)

1913 Poor's Manual of Public Utilities Volume 1 (April 1913)
Page 1487:  UNITED LIGHT AND POWER CO. OF CALIFORNIA.—Incorporated May 2, 1910, in California, to generate steam and electricity for electric lighting, heating and power purposes in San Francisco, Cal., Oakland, Cal. and other cities. The properties owned have a generating capacity as follows: Plant of Consumers' Light and Power Co., San Francisco, Cal., 1,200 h. p.; Equitable Light and Power Co., San Francisco, Cal., 2,500 h. p.; Southside Light and Power Co., San Francisco, Cal., 1,300 h. p. and Central Oakland Light and Power Co., 2,600 h.p.
Also controls the exclusive use of the American District Steam Heating Co.'s complete steam-heating and distributing system operating in the center business district of San Francisco, which is utilizing and distributing exhaust steam of the generating plants to the extent of about 4,000 h. p.
Page 1495:  Great Western Power Co.
Page 1574:  Pacific Gas and Electric Company.
Page 1582:  San Francisco Gas and Electric Company

1913 "Big Properties to be Handled by Financiers," The San Francisco Call and Post, May 8, 1913, Page 19.
The steam heat and electrical systems of San Francisco and Oakland brought into the great holding company were to be supplemented by new and still larger projects.

1914 "Supervisors May Fix Rates for Steam Heat," San Francisco Chronicle, June 11, 1914, Page 18.
This Adjunct of Light and Power Has Never Been Regulated.

1915 The Bulletin of the National District Heating Association 1(1):20 (October 20, 1915)
The plans were completed for the taking over of The United Light & Power Company of San Francisco by The Great Western Power Company. The United Light & Power Company is the original steam heating company in San Francisco. This will put the Great Western Company in the heating business. System is exhaust steam using American District Steam Company construction. Its competitor The Pacific Gas & Electric Company is using high pressure steam and the two companies will cover the entire office building and hotel district of San Francisco. Mr. Chas. Murphy will be retained as general manager by The Great Western Power Company.

1915 District Heating: A Brief Exposition of the Development of District Heating and Its Position Among Public Utilities, by S. Morgan Bushnell
Page 284:  Map of steam-heating system of the Pacific Gas and Electric Co., in San Francisco

1930 June 12 Pacific Gas & Electric acquires Great Western Power in an all-stock transaction.

1952 P.G. and E. of California; the centennial story of Pacific Gas and Electric Company, 1852-1952, by Charles M. Coleman
Page 275:  Great Western.  Customers in San Francisco were increasing at such a rate that in 1916 a new steam generating station was built at 530 Bush Street to provide additional power supply and live steam for use in downtown office buildings.  The Bush Street plant, converted to serve as Substation R, still is in operation as part of the PG&E system.

1974 Renovation opportunities for steam district heating systems: A decision process in San Francisco
Station S: 2 @ 65,000 lbs./hr. [1 Meacham Place 1913]
Station T: 5 @ 50-100,000 lbs./hr. [460 Jessie St; 465 Stevenson Street 1924]

1991 "DHC has strong holds in northern California," District Heating and Cooling 76(3):4-9 (First Quarter 1991)

1992 Energy Management Services, LLC
San Francisco, CA - Station T Steam Plant
Natural Gas & Oil Fueled Steam Plant
Owner - Pacific Gas & Electric Company
From 1990 to 1992 EMS managers operated the Station T Steam Plant. The five boilers totaled 360,000 lb/hr of steam to downtown San Francisco.

1993 San Francisco Thermal, L.P. bought the steam system from PG&E in 1993.

1994 "Thermal Ventures pursues growth plans in San Francisco, Pittsburgh, Youngstown," District Energy 80(2):10-13 (Fourth Quarter 1994)

1995 NRG Energy purchased 48.9% of San Francisco Thermal, L.P. and purchased the remaining in 1999.

1998 Board of Supervisors, a review of San Francisco Thermal, L.P.'s franchise fee payments  
On April 29, 1993, the Board of Supervisors approved the transfer of the steam franchise ordinance from Pacific Gas and Electric Company to San Francisco Thermal, L.P. (SF Thermal) effective July 2, 1993.

2000 New Century Energies, Inc. and Northern States Power Company SEC filing, August 16, 2000
b. North American  Thermal  Systems LLC, in which NRG owns a 100% interest, is the 1% general partner of Pittsburgh  Thermal LP and of San Francisco Thermal LP, which own the  Pittsburgh  and San  Francisco  heating and cooling  systems, respectively. NRG's wholly-owned subsidiary, NRG Pittsburgh Thermal Inc., is the 99% limited partner of Pittsburgh Thermal LP and NRG's wholly-owned  subsidiary, NRG San Francisco  Thermal  Inc., is the 50.1% limited  partner of San Francisco Thermal  L.P.  NRG is a 48.9%  limited  partner of San  Francisco  Thermal  L.P. Pending public utility commission  approval,  it is expected that the Pittsburgh and San Francisco  heating and cooling systems will be transferred to NRG Energy Center  Pittsburgh  LLC and NRG Energy Center San Francisco  LLC,  respectively, which will be wholly-owned by NRG Thermal Corporation.

2001 Steam tariff , June 15, 2001

2006 NRG Thermal, San Francisco System Profile | Steam System Map |

2013 NRG Energy spun off NRG Thermal and other assets to Clearway

2018 Steam System Tariff, December 20, 2018 

2021 Clearway Energy Thermal Announces Rebrand to Clearway Community Energy, January 19, 2021

2021 Energy Center San Francisco LLC Title V Permits  

2021 Application of Energy Center San Francisco LLC (U-909-H), Clearway Energy Operating LLC, Clearway Energy, Inc., and KKR Thor Bidco, LLC for Authority to Sell and Transfer Indirect Control of Energy Center San Francisco LLC to KKR Thor Bidco, LLC, November 15, 2021

2022 Cordia Launches as New Energy Solutions Provider Dedicated to Sustainability, October 26, 2022



© 2024 Morris A. Pierce