Agriculture Southwestern Ontario has historically been a strong centre for Canadian agricultural production, given the abundance of
arable land and warmer climate that provides for a longer growing season than the rest of the country. Most of the land area in the region is used for agriculture. Common crops grown in the region include
sweet corn,
soybean,
winter wheat, and
canola.
Tobacco was also historically grown in the
tobacco belt, centred on the towns of
Delhi,
Aylmer, and
Tillsonburg in Elgin, Oxford, and Norfolk Counties from the 1920s until the early 2000s, when Ontario bought out the tobacco quotas of most farms in the region in 2008 for $300,000,000 CAD. While some tobacco farms still remain, most have switched to alternative crops, including specialty crops like
ginseng,
hazelnut, and
mushrooms. Fruits such as
blueberries,
strawberries,
raspberries,
blackberries,
gourds,
apples, and
tomatoes are also grown in the region. Cattle ranching is also another important agricultural industry in Southwestern Ontario, with
dairy and
beef farming,
standardbred horse breeding and training,
sheep,
poultry, and
pig farming being common. The dairy and
cheesemaking industry in Southwestern Ontario has been predominantly concentrated in Oxford, Perth, and Wellington Counties, with the region accounting for approximately 56% of Ontario's milk production as of 2020.
Sugar bushes for
maple syrup production also have a modest presence in the region. A strong
commercial greenhouse sector has also emerged in the region, centred predominantly on the towns of
Leamington and
Kingsville in Essex County, which boast the largest concentration of commercial greenhouses in
North America, made viable due to the presence of sandy soils, low energy costs, and mild winters. Crops such as tomatoes,
cucumbers,
bell peppers, berries,
flowers, and
cannabis are grown year-round in these greenhouses, providing a domestic source of out-of-season crops throughout Canada in the winter. The region is also a centre for
wine production. While the majority of
wine production in Ontario is currently located in the
Niagara Region and
Prince Edward County, a wine appellation designated by the
Vinters Quality Alliance (VQA), the regulatory system for wine in Ontario and
British Columbia, is located on the Lake Erie north shore and Pelee Island in Essex County. Additionally, the VQA recognizes additional emerging wine regions located in Norfolk County, Georgian Bay, and Lake Huron east shore.
Energy The energy sector is a major industry in Southwestern Ontario. Energy production in the region is sourced from a mixture of
nuclear,
hydroelectric,
wind,
solar, and
natural gas sources. The bulk of energy production in the region is produced by the
Bruce Nuclear Generating Station in
Kincardine. The plant is the second largest nuclear generating station in the world. The plant began operation in 1971 and currently has a generating capacity of 6,550 MW spread across 8
CANDU PHWR reactors. It is anticipated to eventually reach a generating capacity of 7,000 MW through uprates achieved as a result of an ongoing reactor refurbishment program. In 2023, the Ontario government announced plans to expand the plant's generating capacity by an additional 4,800 MW to meet growing energy demands in the province. Additional energy production is supplemented by wind, solar, and hydroelectric power. Large-scale
wind turbine fields are located predominantly in Essex County, Chatham-Kent, and Lambton County.
Belwood Lake,
Conestogo Lake,
Fanshawe Lake,
Guelph Lake,
Pittock Reservoir, and
Wildwood Lake are all artificial reservoirs created for local hydroelectric production. The
petrochemical and
oil/natural gas industry also has a long history in the region.
Oil was initially discovered in Canada in 1858, when the first
oil well was advanced in
Oil Springs, located in Lambton County. However, oil and petrochemicals did not play a significant role in the regional economy until the large-scale development of oil deposits in
Alberta in the 1930s and after
World War II, when the first large-scale
oil refineries were built in Sarnia. Oil was originally shipped by tankers through the Great Lakes from
Superior, Wisconsin until the 1953 expansion of the
Enbridge pipeline system into Sarnia. Today, Sarnia is home to 3 major oil refineries owned by
Suncor,
Imperial Oil, and
Shell Canada. An additional refinery owned by Imperial Oil is located in
Nanticoke. These refineries collectively supply much of the province's fuel demand, in addition to providing feedstocks for the chemical industry. Additionally, smaller-scale oil and natural gas development is common in rural Ontario, with small
shale oil pools and
natural gas deposits being found in local sedimentary bedrock. Shale oil pools are commonly found in Essex County, Chatham-Kent, and Lambton County, where small oil wells can often be seen operating on farms. Natural gas deposits are largely found and exploited along the Lake Erie north shore and under the Lake Erie lake bed. The
chemical industry also has a strong presence in Sarnia, to the point that the area including Sarnia and
St. Clair Township is colloquially known as
Chemical Valley. The chemical industry has its origins around the same time as the oil industry, during World War II, when tropical sources of
natural latex for
rubber production were being threatened. The federal government designated Sarnia as the area where synthetic
petroleum-based rubbers would be developed for use in the
allied war effort. Over time, various chemical companies, including
Bayer and
NOVA Chemicals, have built many facilities in the region for the production of various chemicals, including
plastics,
paints,
lubricants,
food additives,
cosmetics, rubbers, and other chemicals. The presence of local underground salt beds resulted in a readily available supply of
brine and
chlorine, which has aided the ease of production of chemicals locally.
Manufacturing and Processing Southwestern Ontario's economy and political identity is heavily rooted in the manufacturing industry. Proximity to heavy industry in the
United States Rust Belt, predominantly
Detroit, and the nearby location of
hydroelectric power sources in
Niagara Falls provided a foundation for allowing the region to emerge as Canada's manufacturing heartland. Automotive manufacturing is a major component of the regional manufacturing sector. The Canadian automotive industry first emerged in Windsor and Chatham-Kent in the early 20th century, with the first large-scale automotive plant in Canada being opened in
Walkerville in 1904 by the
Ford Motor Company of Canada. Early domestic automotive brands in Canada were based in Windsor and Chatham-Kent, including
Brooks,
Gray-Dort, and
Hyslop and Ronald, but were eventually dominated by the American automotive companies such as
Chrysler,
Ford,
General Motors, and
Studebaker. Production increases during
World War I and
World War II allowed the industry to grow significantly, at one point making Canada the second largest automotive manufacturer globally, exporting predominantly to other countries within the
British Empire. The Canadian and
United States automotive industries were eventually integrated with the signing of the
APTA in 1965, which reduced cross-border tariffs and production inefficiencies in Canada, resulting an increase in motor vehicle exports to the
United States and domestic parts production, but came at the cost of the decline of domestic automotive brands and consolidation of plants. The signing of
NAFTA in 1994 with the United States and
Mexico further integrated automotive production across
North America, leading to further decline of the automotive sector in Southwestern Ontario. • Formosa Springs Brewery, Independent, founded in 1870 in
Formosa; •
Hiram Walker & Sons Distillery (
Canadian Club),
Suntory Global Spirits, founded in 1858 in Windsor; •
Labatt Brewery,
AB InBev, founded in 1847 in London; •
Sleeman Brewery,
Sapporo Breweries, founded in 1988 in Guelph; •
Waterloo Brewing Company,
Carlsberg Group, founded in 1984 in
Kitchener. ==Infrastructure==