Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Snowy Hydro
Table title:
Generating assets
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Name </th><th colspan=1 rowspan=1 > Fuel </th><th colspan=1 rowspan=1 > Type </th><th colspan=1 rowspan=1 > Location </th><th colspan=1 rowspan=1 > Maximum Capacity (MW) </th><th colspan=1 rowspan=1 > Commissioned </th></tr>
<tr> <td colspan=1 rowspan=1 > Angaston </td><td colspan=1 rowspan=1 > Diesel </td><td colspan=1 rowspan=1 > internal combustion </td><td colspan=1 rowspan=1 > Angaston </td><td colspan=1 rowspan=1 > 50 </td><td colspan=1 rowspan=1 > 2005 </td></tr>
<tr> <td colspan=1 rowspan=1 > Blowering </td><td colspan=1 rowspan=1 > Hydro </td><td colspan=1 rowspan=1 > Turbo-pump </td><td colspan=1 rowspan=1 > Blowering Dam </td><td colspan=1 rowspan=1 > 80 </td><td colspan=1 rowspan=1 > 1969 </td></tr>
<tr> <td colspan=1 rowspan=1 > Guthega </td><td colspan=1 rowspan=1 > Hydro </td><td colspan=1 rowspan=1 > Turbo-pump </td><td colspan=1 rowspan=1 > Near Guthega </td><td colspan=1 rowspan=1 > 60 </td><td colspan=1 rowspan=1 > 1955 </td></tr>
<tr> <td colspan=1 rowspan=1 > Jindabyne Dam </td><td colspan=1 rowspan=1 > Mini Hydro </td><td colspan=1 rowspan=1 > Turbo-pump </td><td colspan=1 rowspan=1 > Jindabyne </td><td colspan=1 rowspan=1 > 1.1 </td><td colspan=1 rowspan=1 > 2011 </td></tr>
<tr> <td colspan=1 rowspan=1 > Jounama </td><td colspan=1 rowspan=1 > Small Hydro </td><td colspan=1 rowspan=1 > Turbo-pump </td><td colspan=1 rowspan=1 > Near Jounama </td><td colspan=1 rowspan=1 > 14.4 </td><td colspan=1 rowspan=1 > 2010 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Laverton North </td><td class="highlighted"  colspan=1 rowspan=1 > Natural gas </td><td colspan=1 rowspan=1 > Gas turbines </td><td colspan=1 rowspan=1 > Laverton </td><td class="highlighted"  colspan=1 rowspan=1 > 320 </td><td colspan=1 rowspan=1 > 2006 </td></tr>
<tr> <td colspan=1 rowspan=1 > Lonsdale </td><td colspan=1 rowspan=1 > Diesel </td><td colspan=1 rowspan=1 > internal combustion </td><td colspan=1 rowspan=1 > Lonsdale </td><td colspan=1 rowspan=1 > 21 </td><td colspan=1 rowspan=1 > 2002 </td></tr>
<tr> <td colspan=1 rowspan=1 > Murray 1 </td><td colspan=1 rowspan=1 > Hydro </td><td colspan=1 rowspan=1 > Turbo-pump </td><td colspan=1 rowspan=1 > Near Khancoban </td><td colspan=1 rowspan=1 > 950 </td><td colspan=1 rowspan=1 > 1967 </td></tr>
<tr> <td colspan=1 rowspan=1 > Murray 2 </td><td colspan=1 rowspan=1 > Hydro </td><td colspan=1 rowspan=1 > Turbo-pump </td><td colspan=1 rowspan=1 > Near Khancoban </td><td colspan=1 rowspan=1 > 550 </td><td colspan=1 rowspan=1 > 1969 </td></tr>
<tr> <td colspan=1 rowspan=1 > Port Stanvac </td><td colspan=1 rowspan=1 > Diesel </td><td colspan=1 rowspan=1 > internal combustion </td><td colspan=1 rowspan=1 > Lonsdale </td><td colspan=1 rowspan=1 > 65 </td><td colspan=1 rowspan=1 > 2011 </td></tr>
<tr> <td colspan=1 rowspan=1 > Tumut 1 </td><td colspan=1 rowspan=1 > Hydro </td><td colspan=1 rowspan=1 > Turbo-pump </td><td colspan=1 rowspan=1 > Tumut </td><td colspan=1 rowspan=1 > 330 </td><td colspan=1 rowspan=1 > 1959 </td></tr>
<tr> <td colspan=1 rowspan=1 > Tumut 2 </td><td colspan=1 rowspan=1 > Hydro </td><td colspan=1 rowspan=1 > Turbo-pump </td><td colspan=1 rowspan=1 > Tumut </td><td colspan=1 rowspan=1 > 286 </td><td colspan=1 rowspan=1 > 1962 </td></tr>
<tr> <td colspan=1 rowspan=2 > Tumut 3 </td><td colspan=1 rowspan=1 > Hydro </td><td colspan=1 rowspan=1 > Turbo-pump </td><td colspan=1 rowspan=1 > Tumut </td><td colspan=1 rowspan=1 > 1,500 </td><td colspan=1 rowspan=1 > 1973 </td></tr>
<tr> <td colspan=1 rowspan=1 > Micro Hydro </td><td colspan=1 rowspan=1 > Turbo-pump </td><td colspan=1 rowspan=1 > Tumut </td><td colspan=1 rowspan=1 > 0.720 </td><td colspan=1 rowspan=1 > 2003 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Valley Power </td><td class="highlighted"  colspan=1 rowspan=1 > Natural gas </td><td colspan=1 rowspan=1 > Gas turbines </td><td colspan=1 rowspan=1 > Traralgon </td><td class="highlighted"  colspan=1 rowspan=1 > 300 </td><td colspan=1 rowspan=1 > 2002 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Colongra </td><td class="highlighted"  colspan=1 rowspan=1 > Natural gas </td><td colspan=1 rowspan=1 > Gas turbines </td><td colspan=1 rowspan=1 > Colongra </td><td class="highlighted"  colspan=1 rowspan=1 > 667 </td><td colspan=1 rowspan=1 > 2009 </td></tr>
</table>
Question:
What are the natural gas assets of Snowy Hydro?
Answer:
Snowy Hydro owns a 300 MW gas-fired power station in Valley, a 320 MW gas-fired power station at Laverton North, and a 667 MW gas-fired power station at Colongra.