Scottish energy company SSE has said annual results have fallen well short of what it hoped, while it has faced tough competition and rising costs.
Pre-tax profits fell 38% to £725m.
SSE saw household electricity customer accounts drop to 3.46m from 3.82m - while gas accounts fell to 2.32m from 2.53m in 2017-18.
The company is still trying to confirm a buyer for its retail customer division, after a planned merger with rival energy firm NPower collapsed.
SSE shares dropped by 3% after the annual results were announced.
Chief executive Alistair Phillips-Davies said the Perth-based company would continue to invest millions of pounds in green energy projects.
The company also confirmed it has set a deadline for its chairman Richard Gillingwater's departure, saying he will leave his position no later than 31 March 2021.
Mr Gillingwater said: "While our financial results clearly fell well short of what we hoped to achieve at the start of the year, we've made significant progress towards our ambition to be a leading energy company in a low-carbon world."
He said the company had:
- Continued to develop its core businesses of regulated energy networks and renewables
- Demonstrated its ability to create and unlock value from developing and operating, as well as owning, assets
- Adopted clear long-term goals to set up the business for long-term success.
Mr Gillingwater added: "The fundamental strengths of our business and the strategic opportunities afforded by the transition to a low-carbon economy will support the delivery of our five-year dividend plan and creation of value for society as a whole."