You just need more shields

I saw a game with 71 shields (on castles) about a week ago. The starlight could not penetrate, even after blasting for several minutes.

However: the shields caused a massive drain on the economy. Overdrive would drop from like 300% to 50% every time the Starlight targeted the shields. Was fun to watch.

Starlight has 3483 DPS.
Shields regen at rate of 60.
That means you need ~58 shields to counter Starlight.
58 * 480 = 27,840

Aegis (non-walking shield) uses 9 E/s to regen. 58 of them require 552 E/s.

Singularity makes 225 energy per second. Moho Geo makes 100 energy. Two Singularities (450 Energy) + Moho Geo (100 Energy) is enough. Cost is 4000 + 4000 + 1500 = 9500

27,840 + 9500 = 37,340 metal. So no, this is not a good Starlight counter. It costs more than Starlight by a few thousand metal, and keeps you from advancing outside of giant shield wall.

I don't know the math on this one. However, from that game, a shield with 5 links was stronger than starlight.

So the answer: a lot

That many shields are also good for other things and at that point who cares if it is for cost. Shields are less likely to make other players target you than a starlight of your own.

They don't have to be 58 continuous shields. The map I saw this happen on was castles. They literally had all of their castle + both ramps covered in 71 shields, with lots of room underneath for porc, factories, etc.

We do need a 'heavy' shield which is more costly, has bigger range, more hp and more regen. Iam pretty sure 70 individual shields cause a ton of lag.