@Easi-Dec, ithe information is already available for anyone to plan, the detail according to their timescale it will be published in January.
This is very basic business forecasting and planning, one of three scenarious can happen, and anyone in business, especially with this level of knowledeg should easily be able to plan for them, they are:
1) A Heavy cut to all tariffs - It'll go beserk between Jan and March, with shortages of product and dissapointments all round, and a definite lull in business all round for 3 - 6 months, some companies that have all their eggs in one basket will cease trading.
2) A Heavy cut above 10k - It'll go beserk for the larger jobs between Jan and March, with shortages of product and dissapointments all round, Post April >10k may be killed off, domestic will take a small hiccough, some companies will cease trading.
3) A Modest cut all round, It'll get busy between Jan and March, with some shortages of product and a few frustrations, it'll quiten down back to normal pace (hectic!) in April.
Now, who can't plan for that?
@Easi-dec, so that you can plan for it, why don't you set up a very cost effective hire scheme? Not a Hire / Lease purchase, a proper hire and extended hire scheme with purchase options at the end. Those products that come back, you can check over and then offer out to the market at used / refurbished prices.
You continue your production, you ship more product, you get more customers, you get more exposure, this is simple buiness 101
Win-Win - Installers win, Consumers Win, You Win.