London-based Downing Renewables and Infrastructure Trust Plc (<a href="https://www.londonstockexchange.com/stock/DORE/downing-renewables-infrastructure-trust-plc/company-page" target="_blank">LON:DORE</a>) plans to invest GBP 5 million (USD 6.6m/EUR 5.9m) to buy three Swedish hydropower plants whose combined annual production is expected to reach about 7.5 GWh after certain upgrades.