UK utility SSE plc (<a href="http://https://www.londonstockexchange.com/stock/SSE/sse-plc/company-page" target="_blank">LON:SSE</a>) plans to invest GBP 70 million (USD 88.7m/EUR 84.6m) to repower the 45-MW Lochay Hydro hydro-electric power station in Scotland, seeking to extend its operational life by at least another 40 years.