In which I post about a TL9 solar system

[Say, it isn't that bad!]

Originally Posted by Anthony

Well, some of that has to do with scale. Mass requirements for mass shielding vary with surface area, mass requirement for electromagnetic shielding (applies to both magnetic shields and electrostatic shields) vary with diameter, so electromagnetic shielding wins for sufficiently large scale vessels and habitats.

Edit: Post struck as super-science until further information.

What Size Modifier would "sufficiently large" be, in this context? I'm going to guess SM+13, so I can do a preliminary write-up.

Need some sort of write-up of electromagnetic/electrostatic shielding, so starting from Force Screen: Each TL adds/subtracts the equivalent of one SM from a ships' armour, so a TL9^ Force Screen for a SM+15 ship or station would be 200 dDR.

Energy is a -50% modifier for Force Screen, which limits a Force Screen to protecting against "beam weapons (or energy melee weapons like force swords), radiation, and the burning damage of nuclear or antimatter blasts." It seems reasonable that this would make its 200 dDR also work as unhardened PF. Restricting it to just radiation sounds like a -80% modifier, and at this point we can call it an "Electromagnetic or Electrostatic Shield" and remove the super-science modifier, and call it TL9.

So: Force Screen (radiation only -80%), TL9^.

Electromagnetic Shield (TL9^) [CORE!]
This system generates a protective electromagnetic field around the entire vessel – it protects all hull sections, not just the one it is installed in. It is rated for the (p. B436) anti-radiation protection factor that it provides. The table shows the field’s PF and the cost per (high-energy) system. Apply the electromagnetic fields' PF first, then any PF from non-empty ship systems.
A spacecraft may combine multiple electromagnetic shield sections into a single system; in this case, add their PF together to get the total PF. You may not combine electromagnetic shields and electrostatic shields. Electromagnetic shields may be light or heavy:
Light Electromagnetic Shield: A relatively inexpensive design; use the listed PF.
Heavy Electromagnetic Shield: A high-power field; it may function as a light field, or it can increase its PF by +50% by using a second Power Point to reinforce the field.
The field only provides protection while powered up.

SM              +13     +14     +15 Edit: There is probably insufficient power at SM less than +15.
PF              50      100     200 Edit: Electromagnetic fields work off the radius, not the surface area.
Cost
Light Shield    $100M   $300M   $1B
Heavy Shield    $300M   $1B     $3B

Electrostatic Shield (TL9^) [HULL!]
This system generates a protective electrostatic field around the entire vessel – it protects all hull sections, not just the one it is installed in. It is rated for the (p. B436) anti-radiation protection factor that it provides. The table shows the field’s PF and the cost per (high-energy) system. Apply the electrostatic fields' PF first, then any PF from non-empty ship systems.
A spacecraft may combine multiple electrostatic shield sections into a single system; in this case, add their PF together to get the total PF. You may not combine electromagnetic shields and electrostatic shields. Electrostatic shields may be light or heavy:
Light Electrostatic Shield: A relatively inexpensive design; use the listed PF.
Heavy Electrostatic Shield: A high-power field; it may function as a light field, or it can increase its PF by +50% by using a second Power Point to reinforce the field.
The field provides one-half its usual protection when powered off.

SM              +13     +14     +15 Edit: There is probably insufficient power at SM less than +15.
PF              37.5    75      150 Edit: Electrostatic fields work off the radius, not the surface area.
Cost
Light Shield    $100M   $300M   $1B
Heavy Shield    $300M   $1B     $3B

Edit: Some edits made in the last five minutes.