In this setting, a fixed emission limit harms the economy.

In Europe, for example, companies that go over their emission limits must buy carbon credits to comply.

The other option is to set national emission limits.

Ensure that any installations meet legal requirements such as emission limits and permits.

Effective national emission limits must therefore be set for the main pollutants.

Many of the companies are small and therefore have limited resources for developing the technology needed to comply with the emission limits.

We should not tamper with that date or the emission limit.

There is a real danger that these are being used as a means of getting round the strict emission limits.

It is the first time legally-binding emission limits have been set.

Clear rules are needed for what goes out, in the form of emission limits.