Cool mod. I believe I've found an error however. In the file prototypes/accumulator.lua the section of code

local function fnCapacityLimit(level)
if level <= 0 then
return 5
else
return 10 * fnFlowLimit(level - 1)
end
end


Should be
local function fnCapacityLimit(level)
if level <= 0 then ...

Made 2 small changes in the info.json file. The mod should work if you replace the info.json file with this one.