Piero Ginori Conti
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Piero Ginori Conti, Prince of Trevignano, (
Florence Florence ( ; ) is the capital city of the Italy, Italian region of Tuscany. It is also the most populated city in Tuscany, with 362,353 inhabitants, and 989,460 in Metropolitan City of Florence, its metropolitan province as of 2025. Florence ...
, 3 June 1865 – Florence, 3 December 1939) was a businessman and Italian politician. He was the son of Gino Ginori Conti and Pauline Fabbri, an old aristocratic family of Florence. In 1894, Piero Ginori Conti married Adriana de Larderel (1872–1925), daughter of Count Florestan and Marcella de Larderel (who was Piero's cousin), and heir to one of the most significant fortunes in
Tuscany Tuscany ( ; ) is a Regions of Italy, region in central Italy with an area of about and a population of 3,660,834 inhabitants as of 2025. The capital city is Florence. Tuscany is known for its landscapes, history, artistic legacy, and its in ...
.


Geothermal electricity and Boric Acid

In 1904, Piero Ginori Conti became the head of the
boric acid Boric acid, more specifically orthoboric acid, is a compound of boron, oxygen, and hydrogen with formula . It may also be called hydrogen orthoborate, trihydroxidoboron or boracic acid. It is usually encountered as colorless crystals or a white ...
extraction firm founded by his wife's great-grandfather in
Larderello Larderello is a ''frazione'' of the ''comune'' of Pomarance, in Tuscany in central Italy, renowned for its geothermal productivity. Geography The region of Larderello has experienced occasional phreatic eruptions, caused by explosive outburst ...
, and took the establishment in a new direction, with the use of natural steam to produce electricity. His business plan was: improving the quality of products, increasing production and lowering prices, and exploiting natural dry steam geysers to produce electricity. On 4 July 1904, at Larderello, Conti powered five bulbs from a dynamo driven by a reciprocating steam engine using
geothermal power Geothermal power is electricity generation, electrical power generated from geothermal energy. Technologies in use include dry steam power stations, flash steam power stations and binary cycle power stations. Geothermal electricity generation i ...
. In 1905 he increased power production to 20kW. This system improved to the point that in 1916 it distributed 2750 kW of electricity in the entire area surrounding the village, including nearby cities of Volterra and Pomarance. With a new international reputation, Larderello was visited by
Marie Curie Maria Salomea Skłodowska-Curie (; ; 7 November 1867 – 4 July 1934), known simply as Marie Curie ( ; ), was a Polish and naturalised-French physicist and chemist who conducted pioneering research on radioactivity. She was List of female ...
during the
First World War World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
. In 1912, he succeeded his father-in-law, who had no male heirs, as the majority shareholder of the family business. This year also saw the installation of the first geothermal power plant in Larderello, and the merger of three companies competing in the production of boric acid into a new company, the Società Boracifera di Larderello. This restructuring strengthened the family's control of the company's stock and compensated for the increasing competition from America and the decline of boric acid production.


Fascism's influence on business

The geothermal electricity project was put on hold until 1921, after the war, and after years of social unrest ended with the arrival to power of
Benito Mussolini Benito Amilcare Andrea Mussolini (29 July 188328 April 1945) was an Italian politician and journalist who, upon assuming office as Prime Minister of Italy, Prime Minister, became the dictator of Fascist Italy from the March on Rome in 1922 un ...
, of whom the Ginori Conti and Larderel families were big supporters. The first general campaign in favour of a strike at Castelnuovo, near Larderello, broke out in 1915. After the war, in which his children and wife (a nurse) served, the first strike hit the various establishments in the Larderello S.p.A., except in Larderello itself: the resistance of the worker's union ran from 9 May to 9 June and continued sporadically until October 1920. Work then resumed, with 400 employees being laid off, and free health care and guaranteed
sick leave Sick leave (or paid sick days or sick pay) is paid time off from work that workers can use to stay home to address their health needs without losing pay. It differs from paid vacation time or time off work to deal with personal matters, because ...
being stopped. Workers also now had to pay rent for their homes, were enrolled in the
National Fascist Party The National Fascist Party (, PNF) was a political party in Italy, created by Benito Mussolini as the political expression of Italian fascism and as a reorganisation of the previous Italian Fasces of Combat. The party ruled the Kingdom of It ...
(PNF), and came under surveillance and guard by members of the same PNF. The area fell under
fascist Fascism ( ) is a far-right, authoritarian, and ultranationalist political ideology and movement. It is characterized by a dictatorial leader, centralized autocracy, militarism, forcible suppression of opposition, belief in a natural soci ...
influence from Larderello, until the creation of the tenth combat battalion on 16 October 1920, the first and only in the area until 1922. In October that year, the workers participated in the march on Rome. Tuscan fascists built local networks through the various sports clubs or other diversions already set up under the influence of the philanthropic Larderel and Ginori Conti.


Later years

On 27 March 1931 the first
fumarole A fumarole (or fumerole) is a vent in the surface of the Earth or another rocky planet from which hot volcanic gases and vapors are emitted, without any accompanying liquids or solids. Fumaroles are characteristic of the late stages of volcani ...
exploded with a force and a roar so constant that local residents sealed doors and windows to be able to sleep. The noise could reportedly be heard in the cities of Volterra and Massa Marittima, 25 km away. In 1936,
Ferrovie dello Stato Ferrovie dello Stato Italiane S.p.A. (; ; previously only Ferrovie dello Stato, hence the initialism FS) is Italy's national state-owned enterprise, state-owned railway holding company that manages transport, infrastructure, real estate service ...
opened a new 60 MW power, producing two million pounds of water vapour, in addition to natural gas (93% carbon dioxide, 2.5% hydrogen sulphide, 4.5% of residual fuel). The prince, many times deputy of Volterra (1896–1919) and senator of the Kingdom in 1919, was now assisted by his eldest son John (1899–1972), who was a doctor of chemistry, as general manager of establishments, and his youngest son Frederick (1909–1975), who became Deputy director general and director of the research laboratory, which opened in 1938. Following gaining independence from the Società Ligure Toscana di Elettricità and the Società Electrica Valdarno, the Società Boracifera di Larderello was subsequently merged into the SELT-Valdarno electric power company. After the signing of several agreements after 1932, the Società Boracifera di Larderello passed into the hands of the Ferrovie dello Stato in 1939. Despite the war, the Ferrovie dello Stato conducted further research into steam and electricity generation, with peak production of 900GWh in 1943.


Death

Piero Ginori Conti's status as a Grand Cross and Grand Cordon of the Order of Saints Maurice and Lazarus, and a Minister of State, earned him a state funeral, which was celebrated in the Basilica of Santa Maria del Fiore, in Florence, on 5 December 1939. He left his children a legacy worth 15 million liras (at the time) in real estate and securities.


Family

The prince was widowed in 1925. He remarried to a French woman named Odette Guillemard. From the first marriage he had four sons and two daughters; from the second, a single daughter. The prince was also a Rotarian in the early years of
Rotary International Rotary International is one of the largest service organizations in the world. The self-declared mission of Rotary, as stated on its website, is to "provide service to others, promote integrity, and advance world understanding, goodwill, and p ...
in Italy. He became governor of the then District 46, in the year 1928-1929 as well as Chairman of the RC of Florence.


References


External links


Ginori Conti, Giovanni
at ''bibliocam.it''



{{DEFAULTSORT:Conti, Piero Ginori 1865 births 1939 deaths Italian politicians Princes in Italy Italian businesspeople