The fundraise consists of a placing to raise £1.535 million at 66.5 pence and the issue of £3.47mln of convertible loan notes (CLN) in the firm.
The CLN Issue includes subscriptions for notes by the sellers of Midlands Wood Fuel for a total of £2.31 million.
Midlands Wood Fuel was one firm acquired in June, the other was the customer base of Cornwall-based Mi-Generation Ltd.
Aggregated chief executive Richard Burrell told investors: "We are delighted to announce this fundraising together with the acquisitions of these two wood fuels businesses which follow the acquisition of Forest Fuels earlier this year.
"On completion of the acquisitions we will have a national presence in wood fuels offering both wood chip and wood pellet to end customers. The fundraising has been closed post the Brexit vote and we are confident of achieving further growth in our fuels and projects businesses throughout the UK."
The three firms provide Aggregated with a platform of regional, where it can seek new biomass boilers projects.
Midlands Wood Fuel turned over £3.2mln and made a profit of £170,000 in its last year, while Mi-Generation generated sales of £1.89mln and profits of £294,000.
The considerations are £1.4mln plus £910,000 of debt for Midland Wood and up to £750,000 cash for Mi-Generation.
Aggregated said the UK heating market for wood chip boilers was benefiting from the renewable heat incentive (RHI) estimated by the firm to be 700,000 tonnes a year and the market for wood pellet boilers is estimated to be in excess of 450,000 tonnes per annum.
The firm expects both of these markets to grow by in excess of 5% a year and at present, it estimates that its enlarged pro-forma market share is in excess of 8% in both markets.