G99 is eight sections of DNO paperwork you've filled out a dozen times this year, each one slightly different because every DNO wants the form their way. The customer wants the install next month; the DNO wants four weeks; you want a coffee and your evening back.
Tell Hint the inverter, array size and customer's postcode. It picks the right DNO (UK Power Networks, SSEN, Northern Powergrid, etc.), drafts the eight G99 sections to that DNO's house style, and produces a submission-ready PDF so the install date doesn't slip another month.
Free to start. Open it and have a go — pay only when it's pulling its weight.