Complex sentence: Montreal Light, Heat & Power bought Beauharnois Light, Heat & Power in 1933 and continued the hydroelectric development initiated by Sweezey's; the first 16 units of the Beauharnois Hydroelectric Power Station were installed and commissioned between 1932 and 1941.
Split into simpler sentences: Montreal Light, Heat & Power bought Beauharnois Light, Heat & Power in 1933 and continued the hydroelectric development initiated by Sweezey's. The first 16 units of the Beauharnois Hydroelectric Power Station were installed and commissioned between 1932 and 1941.