National Grid 2016 Annual Report Download - page 36
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Security of supply
Claire Spedding
National Grid, Contingency Balancing
Reserve Manager
When we assessed the
margin for the winter of
2015/16, we procured
additional commercial tools
that raised the margin to a
tight but manageable 5.1%.
On 4 November wind
generation was low and there
was a series of unexpected
generation plant breakdowns.
We issued a notice to market
participants, informing them
of the forecasted position and
requesting more capacity
to be made available for the
tea time peak in electricity
demand. We used our new
demand side tool for the
first time and the market
responded, helping meet
peak demand.
We can’t be complacent
though. We will continue to
work with DECC and Ofgem
to make sure we have the
right tools in place to balance
the system in the future.
Security of supply
Britain’s energy landscape
continues to change at an
unprecedented rate, which
creates challenges for the
industry. We’re acutely aware
of these challenges, which
have implications for how
we operate the system.
As System Operator, our job
is to keep the energy flowing
so it’s there when homes and
businesses need it. It’s crucial
for us to make sure we have
robust contingency plans and
a variety of commercial tools
in place to help balance
supply and demand.
We use our expertise,
knowledge and engagement
with industry stakeholders
to make sure we are well
prepared. And that’s been
the case for one of the
changes we’ve seen –
tighter winter margins.
Case study
“ Are we prepared
for tighter winter
margins?”
34 National Grid Annual Report and Accounts 2015/16 Strategic Report