The phrase "almost full capacity" is correct and usable in written English.
It can be used to describe a situation where something is nearing its maximum limit or utilization, such as in reference to a facility, system, or resource.
Example: "The stadium is currently operating at almost full capacity, with only a few seats left available for the concert."
Alternatives: "nearly full capacity" or "close to maximum capacity".
The company said that its refinery in Texas City, Tex., would increase production to almost full capacity by the middle of the year.
The refinery has been operating at almost full capacity, they say, pouring more fuel on the market and narrowing the spread between government-mandated rates for fuel and what it fetches on the black market.
In early 2014, the Americans supplied 1.8 million litres of diesel to Shorandam and Bagh-e Pul plants, said Baghi, which was enough for the generators to run on almost full capacity.
Geothermal, however, consistently delivers almost full capacity.
I was able to charge my iPhone 3GS to almost full capacity in about an hour.
"Because Heathrow operates at almost full capacity, there is simply no room to reschedule the delayed flights".
A splendid sight on the first night of the season, with the Ryan McBride Brandywell almost full to capacity.
Still, with refineries producing almost at full capacity, the tax break would prompt a jump in demand that would push up prices.
The specific discharge capacity of the active cathode material is 169 mAh g−1 (current density of 0.046 mA cm−2), which suggests that almost the full capacity of LFP can be utilized even under the all-solid-state cell design.
Executives said that North American consumers were paying an average of $3,000 more for G.M. vehicles than they did a year ago and that factories were running almost at full capacity to keep up with higher demand for many vehicles.
The Russian economy has been strong in recent years, functioning almost at full capacity, largely because of high energy prices, which helped build up the country's reserve funds.
